CY7C199CN-12VC CYPRESS [Cypress Semiconductor], CY7C199CN-12VC Datasheet - Page 7

• Manufacturer Part Number: CY7C199CN-12VC
• Description: 256K (32K x 8) Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Timing Waveforms
Data Retention Waveform
Read Cycle 1
Read Cycle 2
Notes
Document #: 001-06435 Rev. *B
9. Device is continuously selected. OE = V
10. WE is HIGH for read cycle.
11. This cycle is OE controlled and WE is HIGH read cycle.
12. Address valid before or similar with CE transition LOW.
Address
Data Out
Data Out
Current
Address
CE
V
V
CE
OE
CC
CC
[9, 10]
[11, 12]
I
I
CC
SB
Previous Data Valid
High Z
t
CDR
IL
= CE.
t
OHA
t
LZCE
t
DATA RETENTION MODE
PU
t
AA
t
ACE
t
LZOE
50%
t
DOE
t
RC
t
RC
Data Valid
Data Valid
t
R
t
HZOE
CY7C199CN
50%
t
HZCE
t
PD
Page 7 of 14
High Z
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