CY7C109 CYPRESS [Cypress Semiconductor], CY7C109 Datasheet - Page 6

• Manufacturer Part Number: CY7C109
• Description: 128K x 8 Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Data Retention Waveform
Switching Waveforms
Read Cycle No. 1
Read Cycle No. 2 (OE Controlled)
Notes:
Document #: 38-05032 Rev. **
10. Device is continuously selected. OE, CE
11. WE is HIGH for read cycle.
12. Address valid prior to or coincident with CE
DATA OUT
DATA OUT
ADDRESS
CURRENT
ADDRESS
SUPPLY
V
CE
CE
V
OE
CE
CC
CC
1
2
[10, 11]
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
PU
t
LZCE
1
[11, 12]
= V
t
t
LZOE
1
ACE
IL
transition LOW and CE
, CE
t
OHA
50%
t
t
CDR
2
DOE
4.5V
= V
IH
.
t
AA
2
transition HIGH.
t
RC
DATA RETENTION MODE
t
RC
V
DR
> 2V
DATA VALID
t
DATA VALID
HZOE
4.5V
t
R
t
HZCE
t
PD
50%
CY7C1009
CY7C109
IMPEDANCE
Page 6 of 12
HIGH
109-5
109–6
109–7
ICC
ISB