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參數(shù)資料
| 型號(hào)： | LC74402E |
| 元件分類： | 畫(huà)面疊加 |
| 英文描述： | PICTURE-IN-PICTURE IC, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁(yè)數(shù)： | 4/19頁(yè) |
| 文件大小： | 352K |
| 代理商： | LC74402E |
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Pin Functions
Pin No. 80E: LC74401E, 64S: LC74402, 64E: LC74402E
No. 4872-12/19
LC74401E, 74402, 74402E
Pin No.
Symbol
I/O
Connection
Functions
Circuit type
64S
64E
80E
48
40
53
V-M
I
Main screen vertical synchronization signal
(negative polarity)
47
39
50
H-M
I
Main screen horizontal synchronization signal
(negative polarity)
46
38
49
V-S
I
Sub-screen vertical synchronization signal
(negative polarity)
45
37
48
H-S
I
Sub-screen horizontal synchronization signal
(negative polarity)
55
47
61
SCL
I
Microprocessor
Serial clock
I2C
54
46
60
SDA
I/O
Serial data
53
45
59
ADRS
I
VSS
56
48
62
RES
I
Initialization circuit
Reset
52
44
57
TEST
I
VSS
Test (Tied to VSS in normal operation.)
—
3
PORT1
O
—
8
PORT2
O
General-purpose ports
—
15
PORT3
O
—
20
PORT4
O
10
2
4
WDO3
O
11
3
5
WDO2
O
Memory write data outputs
12
4
6
WDO1
O
Memory
13
5
7
WDO0
O
14
6
9
A8
O
MSB
15
7
11
A7
O
16
8
12
A6
O
17
9
13
A5
O
18
10
14
A4
O
Memory
19
11
16
A3
O
20
12
17
A2
O
21
13
18
A1
O
22
14
19
A0
O
LSB
23
15
21
DT
O
24
16
22
WE
O
25
17
25
RAS
O
Memory
Control signals
26
18
26
CAS
O
27
19
27
SC
O
28
20
28
SODI3
I
29
21
29
SODI2
I
Memory read data inputs
30
22
30
SODI1
I
Memory
31
23
31
SODI0
I
—
63
D/A1
O
—
58
D/A2
O
—
52
D/A3
O
PWM D/A converter output
—
51
D/A4
O
—
47
D/A5
O
—
46
D/A6
O
LA7403 or a sync
separator IC
Address
(A8 is left open when
a 256 kbyte external
memory is used.)
Continued on next page.
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