Schematics

FCC ID:

Schematics

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                                                                                                                                           Y2

                                                                                                                                       24M/12pF


                                                                                                                                                                                                                              R14               220R
                                                                                                                                                                                                 VMCU




                                                                                                                                                                                                                                                           C5
                                                                                                                                                                                                                                                                           C7
                                                                                                                                                                                                                                                                           106
                                                                               U2




                                                                                                                                                                                                                                                          104




                                                                                                                                                                                                                                                                                                                1




                                                                                                                                                                                                                                                                                                                                       1




                                                                                                                                                                                                                                                                                                                                                               1
                                                                                                                                                                                                                                                                                           1
                                  R                  1
                                                           PC5/SD1/CLK         BT_OSCO
                                                                                                20
                                  G                  2
                                                           PC4/SD1CMD/ADC4     BT_OSCI
                                                                                                19




                                                                                                                                                                                                                                                                                                       D2




                                                                                                                                                                                                                                                                                                                          D3




                                                                                                                                                                                                                                                                                                                                                 D4
                                  B                  3                                                                                                                 ANT1




                                                                                                                                                                                                                                                                           D1
                                                           USBDM/SD1/DAT/ADC10 FM_IN
                                 RXD                                                            18                                         2.7P
                                            USB_DP   4                                                                                C8
         USB_DP                                            USB/DP/AUX1R/ADC1       BT_RF                                                                            ANTENNA
                                 TXD                                                            17




                                                                                                                                                                                                                                                                                                                    B




                                                                                                                                                                                                                                                                                                                                           B




                                                                                                                                                                                                                                                                                                                                                                     B
                                                                                                                                                                                                                                                                                                                G




                                                                                                                                                                                                                                                                                                                                       G




                                                                                                                                                                                                                                                                                                                                                               G
                                            104




                                                                                                                                                                                                                                                                                                            R




                                                                                                                                                                                                                                                                                                                               R




                                                                                                                                                                                                                                                                                                                                                        R
                                       C4            5




                                                                                                                                                                                                                                                                                                B
                                                                                                                                                                                                                                                                                          G
                                                                                                                                                                                                                                                                                 R
MIC+                                                       PA0/MIC/AUX1L/ADC0 BT_AVDD                               105




                                                                                                                                                                                                                                                                                                            4


                                                                                                                                                                                                                                                                                                                3


                                                                                                                                                                                                                                                                                                                    2




                                                                                                                                                                                                                                                                                                                               4


                                                                                                                                                                                                                                                                                                                                       3


                                                                                                                                                                                                                                                                                                                                           2




                                                                                                                                                                                                                                                                                                                                                        4


                                                                                                                                                                                                                                                                                                                                                               3


                                                                                                                                                                                                                                                                                                                                                                     2
                                                                                                16                              C1




                                                                                                                                                                                                                                                                                 4


                                                                                                                                                                                                                                                                                           3


                                                                                                                                                                                                                                                                                                2
        6.8K          R2                             6
                                  DACL                     DACL              ADC12/PR2                                   MODE
                                                                                                15
 MIC-
                                                     7
                105                                        DACVDD            ADC12/PR1                                   MUTE
                           C2                                                                   14
                                                     8                                                                                                                                                                                3        Q1
                105
                                                           VCOM                RTCVDD                               105                                                                    B            R1          2.2K
                            C6                                                                  13                              C3                                                                                            2
                                                     9                                                                                                                                                                                1
                                                           DACVSS                   VBAT               VMCU         33K
                                                                                                12                              C9
                                                     10                                                          BULE          LED2
                105                                        VDDIO
                                                               PWMH2H/ADC9/AUX0R/PB5
                           C35                                                                  11                                                                                                                                                                3   Q2
                                                                                                                                                                                           G            R5          2.2K
                                                                                                                                                                                                                                                            2
                                                                     AC6928B                                                                                                                                                                                      1


                                                                                                                                                                                                                                                                                 3         Q3
                                                                                                                                                                                            R            R6          2.2K
                                                                                                                                                                                                                                                                            2
                                                                                                                                                                                                                                                                                     1




                                                                                                                                               VMCU




                                                                                                                                                                                                                       VMCU
                                                                                                                                      1


                                                                                                                                               3
                                                                                                                                                       SW1


                                                                                                                                                   SW_3P_1T1P




                                                                                                                                                                                                                      47K
                                                                                                                                           2




                                                                                                                                                                                                                                                    U1




                                                                                                                                                                                                                      R8
                                                                                                  U3
                      6
         7




                                                                                      LTC4054
                             1                                                 4                             3                                                                                                                    1                                                             SPK-
          GND




                                                                                                                                                                              MUTE
                GND




                      VCC                                                          VCC                 BAT              BAT+                             VCC                                                                              SD                VOP
                             2                                                                                                                                                                    1uF                                                             8
                       D+                                                                                                                                                                                     C10                 2
                                                                                            GND




                             3                                                 1                             5
                       D-                                                           /CHRG            PROG                                                                                                                                 BYP               GND
                             4                                                                                                                                                                                                                                    7                  VMCU
                                                      1K
          GND




                      GND
                GND




                             5                                                                                                                                                MODE                                                3
                                                                                            2




                      GND                                                                                                                                                                                                                 MODE              VDD
                                                                                                                                                                                                                                                                  6
                                                                                                                               1K




                                                                                                                                                      LI_3.7-4.4V                                R37          8.2K                4                                                             SPK+
                                                                                                                                                                              DACL                                                        IN                VON




                                                                                                                                                                                                                                                    GND
         8



                      9




                                                                                                                                                                                                                                                                  5
                                                      R4




                                                                                                                                                                                     C30   224
                                                                                                                               R3




                                                                                                                                                                                                                                  LTK5128




                                                                                                                                                                                                                                                     9
                                                            RED      LED1

                                                                                                                                                           GND
                                                                                                                                                                                                                                                                                         C24
                                                                                                                                                                                                                                                                                         106

          USB-MICRO




                                                                                                                                                                                                                                                                                                                        FILE NAME :

                                                                                                                                                                                                                                                                                                                        SHEET NAME :

                                                                                                                                                                                                                                                                                                                        DRAWN BY :             DATE :   2018-12-20   VERSION :V01

                                                                                                                                                                                                                                                                                                                        CHECKED BY :           DATE :                SHEET : 1/1

                                                                                                                                                                                                                                                                                                                        APPROVED BY:           DATE :                SIZE : A3



Document Created: 2019-09-07 20:59:21
Document Modified: 2019-09-07 20:59:21

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