IS62VV51216LL
ISSI ®
WRITE CYCLE NO. 4 (UB/LB Controlled)
t WC
ADDRESS
ADDRESS 1
t WC
ADDRESS 2
OE
t SA
CS1 LOW
CS2 HIGH
WE
UB, LB
DOUT
DIN
t PBW
t HZWE
DATA UNDEFINED
WORD 1
HIGH-Z
t SD
DATAIN
VALID
t HA
t SA
t PBW
WORD 2
t HA
t LZWE
t HD
t SD
DATAIN
VALID
t HD
UB_CSWR4.eps
DATA RETENTION SWITCHING CHARACTERISTICS (LL)
Symbol
VDR
IDR
tSDR
tRDR
Parameter
Vcc for Data Retention
Data Retention Current
Data Retention Setup Time
Recovery Time
Test Condition
See Data Retention Waveform
Vcc = 1.0V, CS1 ≥ Vcc – 0.2V
See Data Retention Waveform
See Data Retention Waveform
Min. Max. Unit
1.0 2.2
V
—5
µA
0—
ns
tRC —
ns
DATA RETENTION WAVEFORM (CS1 Controlled)
VCC
1.65V
tSDR
Data Retention Mode
tRDR
1.4V
VDR
CS1
GND
CS1 ≥ VCC - 0.2V
Integrated Silicon Solution, Inc. — 1-800-379-4774
9
PRELIMINARY INFORMATION Rev. 00B
01/10/01