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參數(shù)資料
| 型號： | LC895194 |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP144 |
| 封裝： | SQFP-144 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 84K |
| 代理商： | LC895194 |
Pin Functions
Type: I: Input pin, O: Output pin, B: Bidirectional pin, P: Power supply pin, NC: No connection pin
Note: 1. NC (no connection) pins must be left open.
2. Pin names (signal names) that begin with a Z have negative (inverted) logic.
3. VSS0 is the logic system ground and VSS1 is the IDE interface driver ground.
No. 5154-4/7
LC895194
Pin No.
Symbol
Type
Function
1
VSS0
P
2
ZRAS0
O
Buffer DRAM RAS signal output 0 (This pin is used normally.)
3
ZRAS1
O
Buffer DRAM RAS signal output 1
4
VSS0
P
5
ZCAS0
O
Buffer DRAM CAS signal output 0 (This pin is used normally.)
6
ZCAS1
O
Buffer DRAM CAS signal output 1
7
VSS0
P
8
ZOE
O
Buffer RAM output enable
9
ZUWE
O
Buffer RAM upper write enable
10
ZLWE
O
Buffer RAM lower write enable
11
RA0
O
12
RA1
O
13
RA2
O
14
RA3
O
RA0 to RA9 are the data buffer DRAM address lines.
15
RA4
O
16
RA5
O
17
RA6
O
18
VDD
P
19
VSS0
P
20
RA7
O
21
RA8
O
RA0 to RA9 are the data buffer DRAM address lines.
22
RA9
O
23
NC
24
NC
25
TEST0
NC
26
TEST1
NC
Test pins.
27
TEST2
NC
28
TEST3
NC
29
NC
30
IO0
B
31
IO1
B
32
IO2
B
Data buffer RAM data I/O
33
IO3
B
These pins have built-in pull-up resistors.
34
IO4
B
35
IO5
B
36
VSS0
P
37
VDD
P
38
IO6
B
39
IO7
B
40
IO8
B
41
IO9
B
42
IO10
B
Data buffer RAM data I/O
43
IO11
B
These pins have built-in pull-up resistors.
44
IO12
B
45
IO13
B
46
IO14
B
47
IO15
B
48
EXCK
O
49
WFCK
I
SUB-CODE input/out pin
50
SBSO
I
51
SCOR
I
Continued on next page.
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