参数资料
型号: W24258C-70LE
厂商: WINBOND ELECTRONICS CORP
元件分类: SRAM
英文描述: 32K X 8 STANDARD SRAM, 100 ns, PDIP28
封装: 0.600 INCH, PLASTIC, DIP-28
文件页数: 1/10页
文件大小: 187K
代理商: W24258C-70LE
Preliminary W24258C
32K
× 8 CMOS STATIC RAM
Publication Release Date: December 1998
- 1 -
Revision A1
GENERAL DESCRIPTION
The W24258C is a normal speed, very low power CMOS static RAM organized as 32768
× 8 bits that
operates on a wide voltage range from 2.7V to 5.5V power supply. This device is manufactured using
Winbond's high performance CMOS technology.
FEATURES
Low power consumption:
Active: 350 mW (max.)
Standby: 6
W (max.)/3V
25
W (max.)/5V
Access time: 70 nS (max.)/5V
100 nS (max.)/3V
Single 3V/5V power supply
Fully static operation
All inputs and outputs directly TTL compatible
Three-state outputs
Battery back-up operation capability
Data retention voltage: 2V (min.)
Packaged in 28-pin 600 mil DIP, 330 mil SOP
and standard type one TSOP (8 mm
× 13.4
mm)
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28-pin
DIP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VDD
WE
A13
A8
A9
A11
OE
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O1
I/O2
I/O3
VSS
1
2
3
4
5
6
7
8
9
1
0
1
2
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28-pin
TSOP
OE
A11
A9
A8
A13
WE
VDD
A14
A12
A7
A6
A5
A4
A3
A10
CS
I/O8
I/O7
I/O6
I/O5
I/O4
I/O3
I/O2
I/O1
A0
A1
A2
VSS
BLOCK DIAGRAM
CLK GEN.
PRECHARGE CKT.
CORE CELL ARRAY
512 ROWS
64 X 8 COLUMNS
DATA
CNTRL.
CLK
GEN.
R
O
W
D
E
C
O
D
E
R
A12
A14
A2
A3
A4
A5
A6
A7
A13
A11
I/O CKT.
COLUMN DECODER
OE
WE
CS
I/O1
I/O8
A10 A1 A0 A8 A9
PIN DESCRIPTION
SYMBOL
DESCRIPTION
A0
A14
Address Inputs
I/O1
I/O8
Data Inputs/Outputs
CS
Chip Select Input
WE
Write Enable Input
OE
Output Enable Input
VDD
Power Supply
VSS
Ground
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