WE512K / 256K / 128K8-XCX
128Kx8 BIT CMOS EEPROM Module
FEATURES
Read Access Times of 150, 200ns
Automatic Page Write Operation
JEDEC Standard 32 Pin, Hermetic Ceramic DIP (Package
• Internal Address and Data Latches for
• 256 Bytes, 1 to 64 Bytes/Row, Four Pages
Page Write Cycle Time 10mS Max.
Data Polling for End of Write Detection
Hardware and Software Data Protection
TTL Compatible Inputs and Outputs
300)
Commercial, Industrial and Military Temperature Ranges
MIL-STD-883 Compliant Devices Available
Write Endurance 10,000 Cycles
Data Retention at 25°C, 10 Years
Low Power CMOS Operation:
• 1mA Standby Typical/70mA Operating
FIGURE 3 – PIN CONFIGURATION
TOP VIEW
PIN DESCRIPTION
A0-18
I/O0-7
CS#
OE#
WE#
VCC
Address Inputs
Data Input/Output
Chip Select
Output Enable
Write Enable
+5.0V Power
Ground
NC
A16
A15
A12
A7
1
2
3
4
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
VCC
WE#
NC
A14
A13
A8
VSS
BLOCK DIAGRAM
5
A6
6
A0-14
I/O0-7
A5
7
A9
A4
A3
A2
A1
8
9
A11
OE#
A10
CS#
I/O7
I/O6
I/O5
I/O4
I/O3
WE#
OE#
10
11
12
13
14
15
16
A0
32K x 8
32K x 8
32K x 8
32K x 8
I/O0
I/O1
I/O2
VSS
A15
A16
Decoder
CS#
3
4312.08E-0718-ss-WE512K_256K_128K8-XCX
Mercury Corp. - Memory and Storage Solutions • (602) 437-1520 • www.mrcy.com