CY7C274-45WMB Cypress Semiconductor Corp, CY7C274-45WMB Datasheet - Page 6

• Manufacturer Part Number: CY7C274-45WMB
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C274-45WMB

• Density: 256Kb
• Organization: 32Kx8
• Interface Type: Parallel
• In System Programmable: In System/External
• Access Time (max): 45ns
• Package Type: Windowed CDIP
• Reprogramming Technique: UV
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 130mA
• Pin Count: 28
• Mounting: Through Hole
• Operating Temp Range: -55C to 125C
• Operating Temperature Classification: Military
• Lead Free Status / RoHS Status: Not Compliant

Document #: 38-04008 Rev. *C
GND
GND
V
A
A
A
A
A
A
A
A
A
A
D
D
D
A
A
A
A
A
A
A
D
D
D
A
PP
A
12
9
8
7
6
5
4
3
2
1
0
0
1
2
7
6
5
4
3
2
1
0
0
1
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Top View
Top View
7C271
7C274
DIP
DIP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
A
A
A
A
A
V
PGM
VFY
D
D
D
D
D
V
A
A
A
A
A
VFY
A
PGM
D
D
D
D
D
CC
PP
CC
10
11
12
13
14
14
13
8
9
11
10
7
6
5
4
3
7
6
5
4
3
Figure 1. Programming Pinouts
NC
NC
D
D
A
A
A
A
A
A
A
A
A
A
A
A
A
A
6
5
4
3
2
1
0
0
6
5
4
3
2
1
0
0
5
6
7
8
9
10
11
12
13
5
6
7
8
9
10
11
12
13
14151617
14151617
4
4
Top View
Top View
3 2 1
3 2 1
7C274
7C271
LCC
LCC
32
32
181920
181920
31
31
30
30
29
28
27
26
25
24
23
22
21
29
28
27
26
25
24
23
22
21
A
A
A
NC
V
PGM
VFY
D
D
A
A
A
NC
VFY
A
PGM
D
D
12
13
14
PP
8
9
11
10
7
6
7
6
CY7C271
CY7C274
Page 6 of 13
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