28C256T
256K EEPROM (32K x 8-Bit) EEPROM
TABLE 1. 28C256T PINOUT DESCRIPTION
PIN
SYMBOL
DESCRIPTION
*10-3, 25, 24,
A0-A14
Address
21, 23, 2, 26, 1
11-13, 15-19
I/O0-I/O7
OE
Input/Output
Output Enable
Chip Enable
Write Enable
Power Supply
Ground
22
20
27
28
14
CE
WE
V
CC
V
SS
*Refer to diagram on Page 1 for pin relationship.
TABLE 2. 28C256T ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN
MAX
UNITS
Supply Voltage (Relative to V )
V
-0.6
-0.51
-55
7.0
7.0
V
V
°C
°C
SS
CC
Input Voltage (Relative to V )
V
SS
IN
Operating Temperature Range2
Storage Temperature Range
TOPR
TSTG
125
150
-65
1. V = -3.0 V for pulse width > 50 ns.
IN
2. Including electrical characteristics and data retention.
TABLE 3. 28C256T DELTA LIMITS
PARAMETER
VARIATION
ICC1
±10%
±10%
±10%
±10%
ICC2
ICC3A
ICC3B
02.18.02 Rev5
All data sheets are subject to change without notice
2
©2001 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
