CY7C274-55QMB Cypress Semiconductor Corp, CY7C274-55QMB Datasheet - Page 5

• Manufacturer Part Number: CY7C274-55QMB
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C274-55QMB

• Density: 256Kb
• Organization: 32Kx8
• Interface Type: Parallel
• In System Programmable: In System/External
• Frequency (max): Not RequiredMHz
• Access Time (max): 55ns
• Package Type: LCC
• 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: 32
• Mounting: Surface Mount
• Operating Temp Range: -55C to 125C
• Operating Temperature Classification: Military
• Lead Free Status / Rohs Status: Not Compliant

Table 2. CY7C274 Mode Selection
Document #: 38-04008 Rev. **
Read
Output Disable
Power Down
Program
Program Verify
Program Inhibit
Blank Check
Note:
8.
9.
Mode
X can be V
V
PP
should be tied to V
IL
Read or Output Disable
(V
ILP
) or V
CC
IH
Other
(V
5% in read mode.
IHP).
GND
GND
V
A
D
D
D
D
D
D
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
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
A
A
A
A
A
A
A
A
A
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
14
14
14
14
14
14
14
14
14
CC
10
11
12
13
14
PP
CC
14
13
8
9
11
10
7
6
5
4
3
7
6
5
4
3
Figure 1. Programming Pinouts
–A
–A
–A
–A
–A
–A
–A
–A
–A
0
0
0
0
0
0
0
0
0
VFY
V
V
V
V
OE
V
V
X
IHP
IHP
ILP
ILP
IH
IL
NC
NC
A
A
A
A
A
A
A
D
A
A
A
A
A
A
A
D
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
Pin Function
Top View
Top View
3 2 1
3 2 1
V
V
7C274
7C271
LCC
IHP
IHP
LCC
PGM
V
V
CE
V
V
X
IHP
ILP
IH
/V
/V
IL
32
32
181920
181920
ILP
ILP
31
31
30
30
29
28
27
26
25
24
23
22
21
29
28
27
26
25
24
23
22
21
[8]
A
A
A
NC
V
PGM
VFY
D
D
A
A
A
NC
VFY
A
PGM
D
D
PP
12
13
14
7
6
8
9
11
10
7
6
Note 9
V
V
V
V
V
V
X
X
PP
PP
PP
PP
PP
PP
CY7C271
CY7C274
Page 5 of 15
O
High Z
High Z
High Z
D
O
O
O
D
7
7
7
7
7
7
–O
–D
–O
–D
–O
–O
0
0
0
0
0
0