17
Pin No.
Pin Name
I/O
Description
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
HOLD
E-PROM1
E-PROM2
BATT IND
POWER SW
ALARM OUT
MUTE
TEST
INH
IF IN
DO1
DO2
GND
FM IN
AM IN
VDD
RESET
X OUT
X IN
V XT
V LCD
C1
C2
VEE
L INPUT, KEYS HOLD.
E-PROM INTERFACE.
E-PROM INTERFACE.
A/D INPUT FOR BATTRY INDICATOR. (Connected to VDD)
H INPUT, RADIO ON.
ALARM1,ALARM2 OUTPUT.
WHEN MUTE ON, H OUTPUT.
TEST PIN. (Not connected)
L INPUT RADIO OFF.
IF SIGNAL INPUT.
PLL OUTPUT. (Connected to VDD)
PLL OUTPUT.
GND.
FM OSC SIGNAL INPUT.
AM OSC SIGNAL INPUT.
Power Supply Pin.
Input pin for system reset signals. (Pull up)
Crystal oscillator output pin.
Crystal oscillator input pin.
Power supply for the crystal oscillator. (Pull down)
Voltage doubler boosting pin for driving the LCD.
1.5V constant voltage supply pin for driving the LCD. (Pull down)
I
I/O
O
I
I
O
O
I
I
I
O
O
—
I
I
—
I
O
I
I
I
O
O
—
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