W24257A
Publication Release Date: May 1997
- 5 - Revision A14
AC CHARACTERISTICS
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C)
Read Cycle
PARAMETER SYM. W24257A-10 W24257A-12 W24257A-15 W24257A-20 UNIT
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
Read Cycle Time TRC 10 -12 -15 -20 -nS
Address Access Time TAA -10 -12 -15 -20 nS
Chip Select Access Time TACS -10 -12 -15 -20 nS
Output Enable to Output Valid TAOE -5-6-7-10 nS
Chip Selection to Output in Low Z TCLZ∗3-3-3-3-nS
Output Enable to Output in Low Z TOLZ∗0-0-0-0-nS
Chip Deselection to Output in High Z TCHZ∗-5-6-7-10 nS
Output Disable to Output in High Z TOHZ∗-5-6-7-10 nS
Output Hold from Address Change TOH 3-3-3-3-nS
∗ These parameters are sampled but not 100% tested.
Write Cycle
PARAMETER SYM. W24257A-10 W24257A-12 W24257A-15 W24257A-20 UNIT
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.
Write Cycle Time TWC 10 -12 -15 -20 -nS
Chip Selection to End of Write TCW 9-10 -13 -17 -nS
Address Valid to End of Write TAW 9-10 -13 -17 -nS
Address Setup Time TAS 0-0-0-0-nS
Write Pulse Width TWP 9-10 -10 -12 -nS
Write Recovery Time CS , WE TWR 0-0-0-0-nS
Data Valid to End of Write TDW 6-7-9-10 -nS
Data Hold from End of Write TDH 0-0-0-0-nS
Write to Output in High Z TWHZ∗-6-7-8-10 nS
Output Disable to Output in High Z TOHZ∗-6-7-8-10 nS
Output Active from End of Write TOW 0-0-0-0-nS
∗ These parameters are sampled but not 100% tested.