IS62LV12816ALL
ISSI
®
6
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. A
04/17/01
WRITE CYCLE SWITCHING CHARACTERISTICS
(1,2)
(Over Operating Range)
-55 -70 -100
Symbol Parameter Min. Max. Min. Max. Min. Max. Unit
tWC Write Cycle Time 55 — 70 — 100 — ns
tSCE CE to Write End 50 — 65 — 80 — ns
tAW Address Setup Time to Write End 50 — 65 — 80 — ns
tHA Address Hold from Write End 0 — 0 — 0 — ns
tSA Address Setup Time 0 — 0 — 0 — ns
tPWB LB, UB Valid to End of Write 45 — 60 — 80 — ns
tPWE WE Pulse Width 45 — 60 — 80 — ns
tSD Data Setup to Write End 25 — 30 — 40 — ns
tHD Data Hold from Write End 0 — 0 — 0 — ns
tHZWE
(3)
WE LOW to High-Z Output — 30 — 30 — 40 ns
tLZWE
(3)
WE HIGH to Low-Z Output 5 — 5 — 5 — ns
Notes:
1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0.4V to
2.2V and output loading specified in Figure 1.
2. The internal write time is defined by the overlap of CE LOW and UB or LB, and WE LOW. All signals must be in valid states
to initiate a Write, but any one can go inactive to terminate the Write. The Data Input Setup and Hold timing are referenced to
the rising or falling edge of the signal that terminates the write.
3. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.
t
RC
t
OHA
t
AA
t
DOE
t
LZOE
t
ACE
t
LZCE
t
HZOE
HIGH-Z
DATA VALID
t
HZB
ADDRESS
OE
CE
LB, UB
D
OUT
t
HZCE
t
BA
t
LZB
AC WAVEFORMS
READ CYCLE NO. 2
(1,3)
(CS, OE, AND UB/LB Controlled)
Notes:
1. WE is HIGH for a Read Cycle.
2. The device is continuously selected. OE, CE, UB, or LB = V
IL.
3. Address is valid prior to or coincident with CE LOW transition.