CY62256 Cypress Semiconductor, CY62256 Datasheet - Page 2

• Manufacturer Part Number: CY62256
• Description: 256K (32K x 8) Static RAM
• Manufacturer: Cypress Semiconductor

Document #: 38-05248 Rev. *B
Pin Configurations
Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature .................................–65 C to +150 C
Ambient Temperature with
Power Applied................................................... 0 C to +70 C
Supply Voltage to Ground Potential
(Pin 28 to Pin 14) ........................................... –0.5V to +7.0V
DC Voltage Applied to Outputs
in High-Z State
Electrical Characteristics
V
V
V
V
I
I
I
I
Notes:
Parameter
IX
OZ
CC
SB1
2.
3.
OH
OL
IH
IL
GND
I/O 0
I/O 1
I/O 2
A 10
A 11
A 12
A 13
A 14
V
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
IL
A
(min.) = 2.0V for pulse durations of less than 20 ns.
= 25 C, V
Narrow SOIC
13
14
1
2
3
4
5
6
7
8
9
10
11
12
Top View
Output HIGH Voltage
Output LOW Voltage
Input HIGH Voltage
Input LOW Voltage
Input Leakage Current
Output Leakage Current GND < V
V
Current
Automatic CE
Power-down Current—
TTL Inputs
CC
[2]
CC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
....................................–0.5V to V
). Parameters are guaranteed by design and characterization, and not 100% tested.
Operating Supply
Description
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
Over the Operating Range
GND
I/O 0
I/O 1
I/O 2
A 10
A 11
A 12
A 13
A 14
V
V
GND < V
V
f = f
Max. V
V
A 5
A 6
A 7
A 8
A 9
IN
CC
CC
CC
MAX
> V
= Max., I
= Min., I
= Min., I
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Top View
IH
CC
= 1/t
DIP
I
O
or V
, CE > V
Test Conditions
< V
< V
RC
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CC
OUT
IN
OH
OL
CC
CC
< V
+ 0.5V
= 2.1 mA
, Output Disabled
= 1.0 mA
= 0 mA,
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
IH
IL
,
, f = f
MAX
DC Input Voltage
Output Current into Outputs (LOW)............................. 20 mA
Static Discharge Voltage.......................................... > 2001V
(per MIL-STD-883, Method 3015)
Latch-up Current.................................................... > 200 mA
Operating Range
Commercial
Industrial
L
LL
L
LL
Range
V
WE
A
A
OE
V
A
A
WE
CC
A
A
A
A
A
A
A
A
A
OE
10
11
CC
A
A
A
A
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
Min. Typ.
–0.5
–0.5
–0.5
2.4
2.2
22
23
24
25
26
4
5
6
7
27
28
1
2
3
26
25
24
23
22
CY62256 55
7
6
5
4
3
2
1
28
27
[2]
0.5
0.4
0.3
28
25
25
Reverse Pinout
Ambient Temperature
................................ –0.5V to V
(not to scale)
[3]
(not to scale)
Top View
–40 C to +85 C
Top View
TSOP I
0 C to +70 C
TSOP I
+0.5V
Max.
+0.5
+0.5
V
0.4
0.8
0.6
0.5
55
50
50
CC
2
Min. Typ.
–0.5
–0.5
–0.5
2.4
2.2
CY62256 70
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
0.5
0.4
0.3
28
25
25
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
[3]
7
6
5
4
3
2
1
0
0
1
2
3
4
5
6
7
CY62256
5V
5V
Page 2 of 11
+0.5V
Max.
+0.5
+0.5
V
0.4
0.8
0.6
0.5
55
50
50
V
2
CC
CC
CC
10%
10%
+ 0.5V
Unit
mA
mA
mA
mA
mA
mA
V
V
V
V
A
A