Panasonic KX-T7633 Service Manual page 26

Pin No. I/O Setting
1 X1
2 X2
3 Vss
4 OSC2
5 OSC1
6 TEST
7 Vcc
8 Reset/
9 P20/IRQ4
10 P21/SCK1
11 P22/SI1
12 P23/SO1
13 P24/SCK3
14 P25/RxD
15 P26/TxD
16 P27/IRQ0
17 P17/IRQ3
18 P16/IRQ2
19 P15/IRQ1
20 P14
21 P13/TMIG
22 P12/TMOFH
23 P11/TMOFL
24 P10/TMOW
25 PA3
26 PA2
27 PA1
28 P50/WKP0
Pull-up
Processing
I -
O -
-
O -
I -
I -
-
I -
I Built-in
O -
I Built-in
O -
O Built-in
I Built-in
O -
I (out)
I Built-in
I Built-in
I/O Built-in
I/O Built-in
I/O Built-in
I/O Built-in
I/O Built-in
O -
I/O (out)
O -
O -
I Built-in
Contents of Control
not in use
not in use
GND
8MHz clock
not in use
Power terminal
Reset input
OP-Rx-Rdy
LCD_SCK
OP_Busy/
LCD_DATA
OP_SCK
OP_RXD
OP_TXD
OP-Tx-En
Hook detection/
GA_RxINT/
KEYOUT0
KEYOUT1
KEYOUT2
KEYOUT3
KEYOUT4
Chrystal drive pulse of LCD
KEYOUT5
REN/
WEN/
KEY-IN0
26
Remark
Connecting to Vcc
Open
Open
from 8.192MHz ASIC
Connecting to Vss
+{3.3V
Low active
Low active
L:OFF-HOOK
Low active
Timer output125KHz
Low active
Low active