P r e l i m i n a r y
AC Characteristics
Program Command Sequence (last two cycles)
tAVHC
Read Status Data
CLK
tACS
tAS
AVD
tAH
(Note 8)
tAVDP
Addresses
555h
PA
VA
VA
In
Data
Complete
A0h
PD
tDS
tDH
Progress
tCAS
CE#
tCH
OE#
WE#
tCSW2
tWP
tWHWH1
tWPH
tWC
tVCS
VCC
Notes:
1. PA = Program Address, PD = Program Data, VA = Valid Address for reading status bits.
2. “In progress” and “complete” refer to status of program operation.
3. A20–A12 are don’t care during command sequence unlock cycles.
4. Addresses are latched on the first of either the rising edge of AVD# or the active edge of CLK.
5. Either CS# or AVD# is required to go from low to high in between programming command sequences.
6. The Synchronous programming operation is independent of the Set Device Read Mode bit in the Burst Mode
Configuration Register.
7. AVD# must toggle during command sequence unlock cycles.
8. tAH = 45 ns.
9. CLK must not have an active edge while WE# is at VIL
.
Figure 24. Alternate Synchronous Program Operation Timings
October 1, 2003 27243B1
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SPANSION [ SPANSION ]
