s29as008j Meet Spansion Inc., s29as008j Datasheet - Page 50

• Manufacturer Part Number: s29as008j
• Description: 8 Megabit 1 M X 8-bit/512 K X 16-bit Cmos 1.8 Volt-only Boot Sector Flash Memory
• Manufacturer: Meet Spansion Inc.

18.6
50
Alternate CE# Controlled Erase/Program Operations
Notes
1. Not 100% tested.
2. See
Notes
1. PA = program address, PD = program data, DQ7# = complement of the data written to the device, D
2. Figure indicates the last two bus cycles of the command sequence.
3. Word mode address used as an example.
t
t
JEDEC
WHWH1
WHWH2
t
t
t
t
t
t
t
t
t
t
EHWH
DVEH
EHDX
GHEL
WLEL
ELEH
EHEL
AVAV
AVEL
ELAX
Erase and Programming Performance on page 51
Addresses
Parameter
RESET#
RY/BY#
WE#
Data
OE#
CE#
t
t
WHWH1
WHWH2
t
t
t
GHEL
t
SR/W
Std
t
t
t
t
t
t
t
OES
t
CPH
WC
WS
WH
AS
AH
DS
DH
CP
Figure 18.12 Alternate CE# Controlled Write Operation Timings
t
RH
D a t a
555 for program
2AA for erase
Write Cycle Time
Address Setup Time
Address Hold Time
Data Setup Time
Data Hold Time
Output Enable Setup Time
Read Recovery Time Before Write
(OE# High to WE# Low)
WE# Setup Time
WE# Hold Time
CE# Pulse Width
CE# Pulse Width High
Latency Between Read and Write Operations
Programming Operation
Sector Erase Operation
t
t
t
WS
WH
WC
S h e e t
A0 for program
55 for erase
t
GHEL
t
t
t
DS
CP
PA for program
SA for sector erase
555 for chip erase
CPH
S29AS008J
t
(Note 1)
AS
t
DH
Description
(Note 2)
(Note 2)
( A d v a n c e
for more information.
t
AH
PD for program
30 for sector erase
10 for chip erase
t
BUSY
t
WHWH1 or 2
Byte
Word
Data# Polling
I n f o r m a t i o n )
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Typ
Typ
Typ
DQ7#
PA
S29AS008J_00_03 June 6, 2008
OUT
D
OUT
= data written to the device.
Speed Options
0.5
70
70
45
35
35
20
20
0
0
0
0
0
0
6
6
Unit
sec
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs