參數(shù)資料
型號: EM23C256
廠商: ELAN Microelctronics Corp .
英文描述: High Performance 32K × 8 CMOS ROM(高性能256K位(32K × 8)CMOS ROM)
中文描述: 高性能32K的× 8的CMOS光盤(高性能256K位(32K的× 8)的CMOS光盤)
文件頁數(shù): 2/5頁
文件大?。?/td> 34K
代理商: EM23C256
* This specification are subject to be changed without notice.
EM23C256 SERIES
32K X 8 CMOS ROM
2
10.22.1997
PIN ASSIGNMENTS
FUNCTION DESCRIPTIONS
EM23C256A
MODE
READ
STANDBY
OUTPUT DISABLE
CE
OE
A0-A14
VALID
*
*
D0-D7
DATA OUT
HIGH-Z
HIGH-Z
POWER
I
CC
I
SB
I
CC
ACTIVE
INACTIVE
ACTIVE
ACTIVE
*
INACTIVE
EM23C256
MODE
READ
OUTPUT DISABLE
OUTPUT DISABLE
CS1
CS2
A0-A14
VALID
*
*
D0-D7
DATA OUT
HIGH-Z
HIGH-Z
POWER
I
CC
I
CC
I
CC
ACTIVE
INACTIVE
*
ACTIVE
*
INACTIVE
NOTE : “ * “ MEANS ACTIVE ( VALID ) OR INACTIVE ( INVALID )
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDD
A14
A13
A8
A9
A11
OE/OE/NC
A10
CE/CE
D7
D6
D5
D4
D3
EM23C256P, EM23C256M
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDD
A14
A13
A8
A9
A11
CS/CS1/NC
A10
CS/CS2
D7
D6
D5
D4
D3
EM23C256AP, EM23C256AM
BLOCK DIAGRAM
A0
A14
ADDRESS INPUT BUFFER
DECODER
X
Y DECODER
( 32,768 )
BIT CELL
Array
Y
Gating
Output
Buffer
Power
Down
CHIP
SELECT
CIRCUIT
D0
.
D1
D6
D7
CE/CEB
OE/OEB
CS/CSB
.............
..........
.
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