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参数资料
| 型号： | LC7232N-8819 |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封装： | QFP-80 |
| 文件页数： | 22/23页 |
| 文件大小： | 219K |
| 代理商： | LC7232N-8819 |
No. 4643-8/23
LC7232N-8819
Pin
Symbol
I/O
Allocation Active
Function
Initial value
Handling when unused
31
VDD
—VDD
—
Connect to +5 V.
Must be used.
32
PA3
I
K3
—
Key scan input
Connect to GND.
33
PA2
I
K2
—
Key scan input
Connect to GND.
34
PA1
I
K1
—
Key scan input
Connect to GND.
35
PA0
I
K0
—
Key scan input
Connect to GND.
36 to 63
S28 to S1
O
S28 to S1
—
LCD segment driver
Open
64
COM2
O
COM2
—
LCD COM2 driver
Must be used.
65
COM1
O
COM1
—
LCD COM1 driver
Must be used.
66
INT
I
INT
—
Remote control input pin; REMO and INT are connected
Connect directly to VDD.
together.
67
HOLD
I
HOLD
L
Normal mode when HOLD is high
Connect directly to VDD.
Back up mode when HOLD is low (regardless of whether the
clock is enabled)
68
RES
I
RES
L
Connect to +5 V.
Must be used.
69
ADI
I
SD
L
Reports when a station is received during auto-tuning.
Connect directly to VSS.
70
HCTR
I
IFIN
AC
AM/FM IF input
Connect directly to VSS.
71
LCTR
I
—
Connect to GND.
Connect directly to VSS.
72
SNS
I
SNS
L
Power failure determination input pin
Connect directly to VSS.
73
VDD
—VDD
—
Connect to +5 V.
Must be used.
74
FMIN
I
FMOSC
AC
FM local oscillator input
Must be used.
75
AMIN
I
AMOSC
AC
AM local oscillator input
Connect directly to VSS.
76
VSS
—VSS
—
Connect to GND.
Connect directly to VSS.
77
E01
O
E01
H/L
Phase comparator output
Must be used.
78
E02
O
E02
H/L
Phase comparator output
Connect directly to VSS.
79
TEST1
I
TEST1
—
Connect to GND.
Must be used.
80
XOUT
O
XOUT
—
Connection for the 4.5 MHz crystal
Must be used.
Continued from preceding page.
Pin Assignment
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