M87C257-12F1 STMicroelectronics, M87C257-12F1 Datasheet - Page 6

• Manufacturer Part Number: M87C257-12F1
• Description: IC EPROM 256KBIT 120NS 28CDIP
• Manufacturer: STMicroelectronics

Specifications of M87C257-12F1

• Format - Memory: EPROMs
• Memory Type: UV EPROM
• Memory Size: 256K (32K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.600", 15.24mm) Window
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Description
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Table 1.
Figure 2.
Figure 3.
A0-A14
Q0-Q7
E
G
ASV
V
V
NC
DU
CC
SS
PP
Signal names
DIP connections
LCC connections
ASV PP
NC
Q0
A6
A5
A4
A3
A2
A1
A0
V SS
A12
Q0
Q1
Q2
A7
A6
A5
A4
A3
A2
A1
A0
9
Address Inputs
Data Outputs
Chip Enable
Output Enable
Address Strobe / Program Supply
Supply Voltage
Ground
Not Connected Internally
Don’t Use
1
2
3
4
5
6
7
8
9
10
11
12
13
14
M87C257
M87C257
17
1
32
AI00929
28
27
26
25
24
23
22
21
20
19
18
17
16
15
25
V CC
A14
A13
A8
A9
A11
G
A10
E
Q7
Q6
Q5
Q4
Q3
AI00930
A8
A9
A11
NC
G
A10
E
Q7
Q6
M87C257