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CPU Pin Description : IC202
UPD753036GK
—TOP VIEW—
61
GND
GND
66
V
DD ( +3.3 V )
69
V
PP ( +3.3 V )
GND
NC
NC
NC
NC
80
PIN
SIGNAL
I/O
1 to 20
S31 to S12
OUT
21 to 24 COM0 to COM3 OUT
25
BIAS
OUT
26 to 28 VLC0 to VLC2
IN
29 to 31 ATT0 to ATT2
OUT
32
ID
OUT
33
VSS
—
34
AFM
OUT
35
RFM
OUT
36
PO-H/L
OUT
37
—
—
38
RXD
IN
39
—
—
40
TEST
IN
41
—
—
42
POFF–IN
IN
43
+
IN
44
–
IN
45
SET
IN
46
CLK
OUT
47
DATA
OUT
48
CS
OUT
49
LAT
OUT
50
—
—
WRT-847A/847B
40
GND
NC
GND
33
21
DESCRIPTION
LCD segment control
LCD common control
Power supply for LCD drive
(+5.0 V)
Power supply for LCD drive
AF ATT control
ID
Ground
AF muting
RF muting
RF power switch
NC
Received data
Ground
Test
Ground
Power off
Channel switch +
Channel switch _
SET switch
EEPROM/PLL Clock
EEPROM/PLL data out
EEPROM chip select
PLL latch
NC
PIN
SIGNAL
I/O
51
LVD
OUT
52
DO
IN
54
FRC
OUT
55
TC
OUT
56, 57
—
—
58
—
—
59
BAT1
IN
60
—
—
61
AFIND
IN
62
CU-ID
IN
63
—
—
64
AVSS
—
65
AVREF
IN
66
VCC2
—
67, 68
XT1, XT2
IN
69
VCC2
IN
70, 71
X1, X2
IN
72
RESET
IN
73
GND
IN
74
BL
OUT
75
TONE-OFF
OUT
76 to 78 —
—
79
TXD
OUT
80
—
—
DESCRIPTION
Battery alarm
EEPROM data in
EQ switch
TC switch
NC
Pull up
Battery voltage
Ground
AF level
Capsule ID
Ground
Ground
A/D convertor reference
voltage
VDD (+3.3 V)
32.768 kHz
VPP (+3.3 V)
4 MHz clock
Reset
VSS (Ground)
LCD Back-light
Tone switch
NC
Transmitted data
NC
5-5
IC
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