CY7C1021B Cypress Semiconductor, CY7C1021B Datasheet - Page 5

• Manufacturer Part Number: CY7C1021B
• Description: 64K x 16 Static RAM
• Manufacturer: Cypress Semiconductor

Data Retention Waveform
Switching Waveforms
Document #: 38-05148 Rev. *A
Read Cycle No. 2 (OE Controlled)
Read Cycle No. 1
Notes:
DATA OUT
12. WE is HIGH for read cycle.
13. Address valid prior to or coincident with CE transition LOW.
11. Device is continuously selected. OE, CE, BHE and/or BHE = V
CURRENT
DATA OUT
ADDRESS
BHE, BLE
SUPPLY
ADDRESS
V
CC
V
OE
CE
CE
CC
[11, 12]
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
t
LZCE
PU
[12, 13]
t
ACE
t
t
LZBE
t
DBE
LZOE
t
DOE
50%
t
t
OHA
CDR
3.0V
t
AA
IL
.
t
RC
DATA RETENTION MODE
t
RC
V
DR
>
2V
DATA VALID
t
HZOE
DATA VALID
3.0V
CY7C1021BV33
t
R
t
t
HZCE
HZBE
t
PD
50%
IMPEDANCE
HIGH
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