CY62256LL-70PC Cypress Semiconductor Corp, CY62256LL-70PC Datasheet - Page 6

• Manufacturer Part Number: CY62256LL-70PC
• Description: IC SRAM 256KBIT 70NS 28DIP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY62256LL-70PC

• Format - Memory: RAM
• Memory Type: SRAM
• Memory Size: 256K (32K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1080

Document #: 38-05248 Rev. *E
Switching Waveforms
Read Cycle No. 2
Write Cycle No. 1 (WE Controlled)
Write Cycle No. 2 (CE Controlled)
Notes:
14. Address valid prior to or coincident with CE transition LOW.
15. Data I/O is high impedance if OE = V
16. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
17. During this period, the I/Os are in output state and input signals should not be applied.
ADDRESS
DATA OUT
ADDRESS
CURRENT
DATA I/O
DATA I/O
SUPPLY
CE
WE
V
WE
OE
CE
OE
CE
CC
[13, 14]
NOTE
HIGH IMPEDANCE
17
t
PU
(continued)
t
IH
LZCE
t
SA
.
t
HZOE
[10, 15, 16]
[10, 15, 16]
t
t
ACE
LZOE
t
SA
50%
t
DOE
t
AW
t
AW
t
RC
t
WC
t
WC
DATA
t
t
PWE
SD
DATA
t
IN
SCE
t
SD
VALID
DATA VALID
IN
VALID
t
HD
t
HA
t
HA
t
HD
t
t
HZOE
HZCE
t
PD
50%
CY62256
IMPEDANCE
Page 6 of 13
HIGH
ICC
ISB