27C256T
256K (32K x 8-Bit) OTP EPROM
TABLE 1. 27C256T PINOUT DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
V
Programming Voltage
Not connected
PP
2, 3, 30
NC
12-5, 27, 26, 23,
25, 4, 28, 29
A0-A14
Address Enable
22
CE
OE
Chip Enable
Output Enable
Data Input/Output
Ground
24
13-15, 17-21
I/O0 - I/O7
GND
16
31
32
PGM
Program
V
+5V Power Supply
CC
TABLE 2. 27C256T ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MIN
MAX
UNIT
Supply Voltage 1
V
-0.6
-0.6
-0.6
-0.6
+7.0
+13.5
+7.0
13.0
V
V
CC
Programming Voltage 1
All Input and Output Voltage 1,2
A9 and OE Voltage
V
PP
V , V
V
IN OUT
V
V
ID
Thermal Resistance
T
1.26
°C/W
°C
JC
Operating Temperature Range
Storage Temperature Range
TOPR
TSTG
-55
-65
+125
+125
°C
1. Relative to V .
SS
2. V , V , and V min = -1.0V for pulse width < 20 ns.
IN OUT
ID
TABLE 3. DELTA LIMITS
PARAMETER
VARIATION
ICC1
ICC2
±10%
±10%
±10%
±10%
ICC3A
ICC3B
06.24.03 REV 4
All data sheets are subject to change without notice
2
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All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
