am49bds640ah Meet Spansion Inc., am49bds640ah Datasheet - Page 65

• Manufacturer Part Number: am49bds640ah
• Description: Stacked Multichip Package Mcp , Flash Memory And Psram Cmos 1.8 Volt-only Simultaneous Read/write, Burst Mode 64 Megabit 4m ? 16-bit Flash Memory, And 16 Mbit 1m ? 16-bit Psram
• Manufacturer: Meet Spansion Inc.

AC CHARACTERISTICS
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. A21–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 CE# or AVD# is required to go from low to high in between programming command sequences.
6. The Synchronous programming operation is dependent of the Set Device Read Mode bit in the Configuration Register. The
December 5, 2003
Configuration Register must be set to the Synchronous Read Mode.
Addresses
AVD#
CLK
CE#f
WE#
V
Data
OE#
CC
f
t
ACS
Figure 33. Synchronous Program Operation Timings: WE# Latched Addresses
555h
t
VCS
t
CAS
t
CSW
t
WP
t
AVCH
Program Command Sequence (last two cycles)
A D V A N C E
t
AVDP
t
A0h
ACH
t
WC
t
WPH
PA
Am49BDS640AH
I N F O R M A T I O N
t
t
DH
DS
PD
t
CH
VA
t
WHWH1
Progress
Read Status Data
In
VA
Complete
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