Pin Description I/O Hi Hi-z Remarks
19 KEY_IN D.I No Key - -
20 KEY_IN D.I No Key - -
21 KEY_IN D.I No Key - -
22 (NO USE) D.O - - -
23 Reference clock D.O Active - -
24 VDD - - - -
25 VSS - - - -
26 POWER_SW A.I No Key - -
27 CHARGE_DET A.I Charge - -
28 DCDCDRV D.O Active - -
29 DCDCCMR A.I - - -
30 RESET A.I Normal - -
31 VSSO - - - -
32 LOAD A.I - - -
33 XTAL A.I - - -
34 VDDPM A.O - - -
35 VDDLO A.O - - -
36 VDDBAT A.I - - -
37 VDDLR - - - -
38 CHARGE_START A.O - - for charge
39 VDDA - - - -
40 VSSA - - - -
41 LSRN A.O - - -
42 LSRP A.O - - -
43 BANDGAP_REF A.O - - -
44 MICS A.O - - -
45 MICP A.I - - -
46 MICN A.I - - -
47 Reference 
Voltage
A.O - - -
48 RSSI A.I - - -
49 P0.4 D.I - - -
50 AD4N A.I - - -
51 AD4P A.I - - -
52 (NO USE) D.I - - -
53 KEY_STRB D.O Active - -
54 KEY_STRB D.O Active - -
55 KEY_STRB D.O Active - -
56 LCD_SEGMENT D.O Active - -
57 LCD_SEGMENT D.O Active - -
58 LCD_SEGMENT D.O Active - -
59 KEY_STRB D.O Active - -
60 KEY_STRB D.O Active - -
61 LCD_SEGMENT D.O Active - -
62 LCD_SEGMENT D.O Active - -
63 VDD - - - -
64 VSS - - - -
61
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