7-7
7-2. FRONT MICOM PIN FUNCTION (MAIN BOARD U8: Z8F0822)
Pin
Name
I/O
Description
number
1
PC0/T1IN
O
SYSTEM POWER EN
2
PA6/SCL
I
POWER KEY
3
PA7/SDA
I
HOLD
4
/RESET
I
MCU RESET
5
Vss
-
Ground pin
6
XIN
I
MCU XIN
7
XOUT
O
MCU XOUT
8
Vdd
-
3.3V
9
PC5/MISO
O
AV IN SW1
10
PC4/MOSI
I
Battery detect
11
PC3/SCK
I
AV IN SW
12
PC2/SS
O
CHARGE EN
13
PA0/T0IN
I
ADAPTER_DET
14
PA1/T0OUT
O
INVERT PWM
15
PA2/DE0
I
LED2 (CHARGE)
16
PA3/CTS0
I
IR_IN
17
PA4/RXD0
I/O
TXD
18
PA5/TXD0
I/O
RXD
19
PC1/T1OUT
O
MUTE
20
DBG
I
DBG
21
AVdd
-
3.3V
22
AVss
-
Ground pin
23
VREF
-
3.3V
24
PB4/ANA4
O
cb charge enable
25
PB3/ANA3
(-)
N.C.
26
PB2/ANA2
(-)
N.C.
27
PB1/ANA1
I
LED1 (POWER)
28
PB0/ANA0
I
Battery IN
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