M27C256B-70XF1 STMicroelectronics, M27C256B-70XF1 Datasheet - Page 18

• Manufacturer Part Number: M27C256B-70XF1
• Description: IC EPROM 256KBIT 70NS 28CDIP
• Manufacturer: STMicroelectronics

Specifications of M27C256B-70XF1

• Format - Memory: EPROMs
• Memory Type: UV EPROM
• Memory Size: 256K (32K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.600", 15.24mm) Window
• Capacitance, Input: 6 pF
• Capacitance, Output: 12 pF
• Current, Input, Leakage: ±10 μA (Read)
• Current, Operating: 30 mA (Read)
• Current, Output, Leakage: ±10 μA (Read)
• Density: 256K
• Organization: 32K×8
• Package Type: FDIP28W
• Temperature, Operating: 0 to +70 °C
• Time, Access: 70 ns
• Time, Fall: ≤20 ns
• Time, Rise: ≤20 ns
• Voltage, Input, High: 6 V (Read)
• Voltage, Input, Low: 0.8 V (Read)
• Voltage, Output, High: 4.3 V (Read)
• Voltage, Output, Low: 0.4 V (Read)
• Voltage, Supply: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DC and AC parameters
18/24
Figure 8.
Table 11.
1. T
2. V
Symbol
t
t
t
t
t
t
t
t
VPHEL
VCHEL
t
t
EHQX
GHQZ
GHAX
QXGL
GLQV
QVEL
ELEH
AVEL
A
CC
V CC
= 25 °C; V
A0-A14
Q0-Q7
V PP
E
G
must be applied simultaneously with or before V
t
t
t
t
t
t
OES
t
Alt
t
t
VPS
VCS
DFP
t
PW
DS
DH
OE
AH
AS
Programming and Verify modes AC waveforms
Programming mode AC characteristics
CC
= 6.25V ± 0.25V; V
Address Valid to Chip Enable Low
Input Valid to Chip Enable Low
V
V
Chip Enable Program Pulse Width
Chip Enable High to Input Transition
Input Transition to Output Enable Low
Output Enable Low to Output Valid
Output Enable High to Output Hi-Z
Output Enable High to Address Transition
PP
CC
High to Chip Enable Low
High to Chip Enable Low
tVPHEL
tVCHEL
tAVEL
tQVEL
tELEH
DATA IN
Parameter
PP
PROGRAM
= 12.75V ± 0.25V.
VALID
PP
tEHQX
and removed simultaneously or after V
tQXGL
(1) (2)
VERIFY
tGLQV
Condition
DATA OUT
Test
Min
95
2
2
2
2
2
2
0
0
tGHQZ
tGHAX
PP
Max
105
100
130
M27C256B
AI00759
.
Unit
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns