CY62256-55 CYPRESS [Cypress Semiconductor], CY62256-55 Datasheet - Page 2

• Manufacturer Part Number: CY62256-55
• Description: 256K (32K x 8) Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-05248 Rev. *C
Product Portfolio
Pin Configurations
Pin Definitions
CY62256
CY62256L
CY62256LL
CY62256LL
CY62256LL
1-10, 21, 23-26
11-13, 15-19,
27
20
22
14
28
Notes:
2.
GND
I/O 0
I/O 1
I/O 2
A 10
A 11
A 12
A 13
A 14
Typical specifications are the mean values measured over a large sample size across normal production process variations and are taken at nominal conditions
(T
A 5
A 6
A 7
A 8
A 9
A
Pin Number
= 25°C, V
Narrow SOIC
13
14
1
2
3
4
5
6
7
8
9
10
11
12
Top View
Product
CC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Commercial
Com’l / Ind’l
Commercial
Industrial
Automotive
). Parameters are guaranteed by design and characterization, and not 100% tested.
I/O 3
V CC
WE
A 4
A 3
A 2
A 1
OE
A 0
CE
I/O 7
I/O 6
I/O 5
I/O 4
Input
Input/Output
Input/Control
Input/Control
Input/Control
Ground
Power Supply Vcc. Power supply for the device
Type
Min.
GND
4.5
I/O 0
I/O 1
I/O 2
A 10
A 11
A 12
A 13
A 14
A 5
A 6
A 7
A 8
A 9
A
I/O
WE. When selected LOW, a WRITE is conducted. When selected HIGH, a READ is
conducted
CE. When LOW, selects the chip. When HIGH, deselects the chip
OE. Output Enable. Controls the direction of the I/O pins. When LOW, the I/O pins
behave as outputs. When deasserted HIGH, I/O pins are three-stated, and act as
input data pins
GND. Ground for the device
13
14
1
2
3
4
5
6
7
8
9
10
11
12
0
Top View
-A
0
-I/O
DIP
V
14
CC
. Address Inputs
Typ.
7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
. Data lines. Used as input or output lines depending on operation
Range (V)
5.0
[2]
I/O 3
V CC
WE
A 4
A 3
A 2
A 1
OE
A 0
CE
I/O 7
I/O 6
I/O 5
I/O 4
Max.
5.5
V
WE
A
A
OE
V
A
A
WE
CC
A
A
A
A
A
A
A
A
A
OE
10
11
A
A
A
A
CC
A
A
A
A
A
11
10
1
2
3
4
5
6
7
8
9
9
8
7
6
5
4
3
2
1
Speed
Description
55/70
55/70
22
23
24
25
26
(ns)
4
5
6
7
27
28
1
2
3
26
25
24
23
22
70
55
7
6
5
4
70
3
2
1
28
27
Reverse Pinout
(not to scale)
(not to scale)
Top View
Typ.
Top View
TSOP I
Operating, I
TSOP I
28
25
25
25
25
[2]
(mA)
Power Dissipation
Max.
55
50
50
50
50
CC
10
11
12
13
14
15
16
17
18
19
20
21
21
20
19
18
17
16
15
14
13
12
11
10
8
9
9
8
A
CE
I/O
I/O
I/O
I/O
I/O
GND
I/O
I/O
I/O
A
A
A
A
A
A
I/O
I/O
I/O
GND
I/O
I/O
I/O
I/O
I/O
CE
A
0
14
13
12
12
13
14
0
Typ.
7
6
5
4
3
2
1
0
Standby, I
0
1
2
3
4
5
6
7
CY62256
0.1
0.1
0.1
1
2
Page 2 of 12
[2]
(µA)
Max.
SB2
50
10
15
5
5