CAT28C257N-90T 查看數據表（PDF） - Catalyst Semiconductor => Onsemi
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CAT28C257N-90T Datasheet PDF : 12 Pages
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CAT28C257
PIN CONFIGURATION
DIP Package (P, L)
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC
WE
A13
A8
A6
A9
A5
A11
A4
OE
A3
A10
A2
CE
A1
I/O7
A0
I/O6 NC
I/O5 I/O0
I/O4
I/O3
PLCC Package (N, G)
4 3 2 1 32 31 30
5
29 A8
6
28 A9
7
27 A11
8
26 NC
9
TOP VIEW
25 OE
10
24 A10
11
23 CE
12
22 I/O7
13
21 I/O6
14 15 16 17 18 19 20
PIN FUNCTIONS
Pin Name
A0–A14
Function
Address Inputs
Pin Name
WE
I/O0–I/O7
CE
OE
Data Inputs/Outputs VCC
Chip Enable
VSS
Output Enable
NC
Function
Write Enable
5V Supply
Ground
No Connect
Doc. No. 1015, Rev. D
2
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