CY62256Document #: 38-05248 Rev. *B Page 2 of 11
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[2]....................................–0.5V to VCC + 0.5V
DC Input Voltage[2]................................–0.5V to VCC + 0.5V
Output Current into Outputs (LOW).............................20 mA
Static Discharge Voltage.......................................... > 2001V
(per MIL-STD-883, Method 3015)
Latch-up Current.................................................... > 200 mA
1
2
3
4
5
6
7
8
9
10
11
14 15
16
20
19
18
17
21
24
23
22
Top Vi ew
Narrow SOIC
12
13
25
28
27
26
GND
A6
A7
A8
A9
A10
A11
A12
A13
WE
VCC
A4
A3
A2
A1
I/O7
I/O6
I/O5
I/O4
A14
A5
I/O0
I/O1
I/O2
CE
OE
A0
I/O3
22
23
24
25
26
27
28
1
2
510
11
15
14
13
12
16
19
18
17
3
4
20
21
7
6
8
9
OE
A
1
A
2
A
3
A
4
WE
V
CC
A
5
A
6
A
7
A
8
A
9
A
0
CE
I/O
7
I/O
6
I/O
5
GND
I/O
2
I/O
1
I/O
4
I/O
0
A
14
A
10
A
11
A
13
A
12
I/O
3
TSOP I
Top View
(not to scale)
Reverse Pinout
22
23
24
25
26
27
28
1
2
510
11
15
14
13
12
16
19
18
17
3
4
20
21
7
68
9
OE
A
1
A
2
A
3
A
4
WE
V
CC
A
5
A
6
A
7
A
8
A
9
A
0
CE
I/O
7
I/O
6
I/O
5
GND
I/O
2
I/O
1
I/O
4
I/O
0
A
14
A
10
A
11
A
13
A
12
I/O
3
TSOP I
Top View
(not to scale)
1
2
3
4
5
6
7
8
9
10
11
14 15
16
20
19
18
17
21
24
23
22
Top Vi ew
DIP
12
13
25
28
27
26
GND
A6
A7
A8
A9
A10
A11
A12
A13
WE
VCC
A4
A3
A2
A1
I/O7
I/O6
I/O5
I/O4
A14
A5
I/O0
I/O1
I/O2
CE
OE
A0
I/O3
Operating Range
Range Ambient Temperature VCC
Commercial 0°C to +70°C 5V ± 10%
Industrial –40°C to +85°C 5V ± 10%
Electrical Characteristics Over the Operating Range
Parameter Description Test Conditions
CY62256−55 CY62256−70
UnitMin. Typ.[3] Max. Min. Typ.[3] Max.
VOH Output HIGH Voltage VCC = Min., IOH = −1.0 mA 2.4 2.4 V
VOL Output LOW Voltage VCC = Min., IOL = 2.1 mA 0.4 0.4 V
VIH Input HIGH Voltage 2.2 VCC
+0.5V 2.2 VCC
+0.5V V
VIL Input LOW Voltage –0.5 0.8 –0.5 0.8 V
IIX Input Leakage Current GND < VI < VCC –0.5 +0.5 –0.5 +0.5 µA
IOZ Output Leakage Current GND < VO < VCC, Output Disabled –0.5 +0.5 –0.5 +0.5 µA
ICC VCC Operating Supply
Current VCC = Max., IOUT = 0 mA,
f = fMAX = 1/tRC
28 55 28 55 mA
L255025 50 mA
LL 25 50 25 50 mA
ISB1 Automatic CE
Power-down Current—
TTL Inputs
Max. VCC, CE > VIH,
VIN > VIH or VIN < VIL, f = fMAX
0.5 2 0.5 2mA
L0.40.60.4 0.6 mA
LL 0.3 0.5 0.3 0.5 mA
Notes:
2. VIL (min.) = −2.0V for pulse durations of less than 20 ns.
3. Typical specifications are the mean values measured over a large sample size across normal production process variations and are taken at nominal conditions
(TA = 25°C, VCC). Parameters are guaranteed by design and characterization, and not 100% tested.