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Pin
Pin Name
1
X32OUT
2
X32IN
3
VDDRTC
4
XBACKEN
5
VDDSRAM
6
XRAMCS
7
XRAMCE2/
ALARM
8
FTG
9
F1
10
MULT3/5
11
VSS
12
F2/OP50
13
FR/OP51
14
XRESET
15
VSS
16
XORESET
17
XRESETI
18
XWDERR
19
XRSTSWO/
OP82
20
VIDRST/IOP20
21
SPHCLK/IOP21
22
DARKON/IOP22
23
ADSEL2/IOP23
24
BELL/OP
25
3.3V
26 IRDATXD/IOP81
27
IRDARXD/
IOP80
28
TXD/IOP30
29
RXD/IOP31
30
XRTS/IOP32
31
XCTS/IOP33
32
XDSR/IOP34
33
DCD/IOP35
34
XDTR/IOP36
35
RI/CLK/IOP37
36
IOP90
37
IOP91
38
VSS
Buffer Power
5V
supply
Tolerant
VDDRTC
VDDRTC
NO
VDDRTC
YES
VDDSRAM
VDDSRAM
MULT3/5
NO
MULT3/5
NO
MULT3/5
NO
MULT3/5
NO
3.3V
YES
3.3V
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
3.3V
YES
Signal
I/O
Name
-
X32OUT
X32IN
+3.3V/
BATT
XRESET
+3.3V/
BATT
-
VDDSRAM
-
OPEN
FTG
O FTG
F1
O F1 (50%/75% selector)
+5V
DG
E
O LCD control
OPEN
O Not used
XRESET
DG
-
XORESET
XRESETI
XWDERR
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
+3.3V
OPEN
O Not used
OPEN
O Not used
BREAK
O TEL Line Break Control
H/S ALC
I Not used (Hardware Control)
DTMF IMP O DTMF-IMP Control
P-SHORT O P-SHORT Control (Not Used)
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
OPEN
O Not used
DG
121
Description
32.768kHz oscillator for RTC (built
feed back resistor)
32.768kHz oscillator for RTC (built
feed back resistor)
32.768kHz backup power supply
Backup enable
RAMCS buffer/backup power supply
reset
SRAM chip select ("H": 3.3V or
Not used
Power supply
Ground
Reset input for internal digital circuit
Ground
Reset output
Voltage detector IC output for reset
Watch dog timer error
Power supply
Ground
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