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IC DESCRIPTION-1/1 (LC72341G)-1/1
Pin No.
Pin Name
1
XOUT
2
TEST2
3-6
PA3-PA0
7-10
PB3-PB0
11
PC3
12
PC2
13
PC1
14
PC0
15
PD3
16
PD2
17
PD1
18
INT/PD0
19
PE1
20
BEEP/PE0
21
PF2
22
AD11/PF1
23
AD11/PF0
24
VSS1
25
PG3/S20
26
PG2/S19
27
PG1/S18
28
PG0/S17
29
PH3/S16
30
PH2/S15
31
PH1/S14
32
PH0/S13
33-44
S12-S1
45-48
COM4-COM1
49-52
DBR4-DBR1
53
RES
54
HCTR
55
VDD
56
FMIN
57
AMIN
58
VSS2
59
EO
60
AIN
61
AOUT
62
AGND
63
TEST1
64
XIN
I/O
O
Terminal to which external 75 kHz crystal oscillator is connected.
I
Test terminal. GND connection.(Pull down)
I
Key input. (Not connected) (Pull down)
O
Key output.
O
Dimmer: H output when back light is ON. Or L output.
O
Light: H output when back light is ON.
O
ATTN1: Buzzer attenuation output 1.
O
ATTN2: Buzzer attenuation output 2.
O
Mute. High output at mute.
O
Radio: High output at radio power is ON. L output at radio power is OFF.
I
AC: High input when AC adapter is used. L input when battery is used.(Pull down)
I
Back up: L input at backup mode. Normally H. (Pull up)
—
Not used.
O
Beep: Buzzer sound output.
I
AD input.(Pull down)
I
I
AD input. (For voltage detection) (Pull down)
—
Power terminal. GND connection.
I
12/24: 24 hours display at H input. 12 hours display at L input.(Pull down)
I
KT: H input when kitchen timer function is disabled.(Pull up)
—
—
—
Not used.
—
—
—
O
LCD segment.
O
LCD common.
—
Not used.
I
Reset. Reset terminal. Forced reset when L is input. (Pull up)
—
Not used.
—
Power terminal. VDD connection.
—
Not used.
—
—
Power terminal. GND connection.
—
—
Not used.
—
—
I
Test terminal. GND connection.(Pull down)
I
Terminal to which external 75 kHz crystal oscillator is connected.(Pull down)
Description
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