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w w w . D a t a S h e e t 4 U . c o m
V
5.0 V
CC
12 V
V
PP
t
5.0 V
VPS
Address
CE
OE
t
t
OEWS
WE
I/O
7
I/O to I/O
0
6
Program setup
V
5.0 V
CC
12 V
V
PP
5.0 V
t
VPS
Address
CE
t
CES
OE
t
t
WEP
t
OEWS
WE
t
t
DS
I/O
Command
7
in
Command
I/O to I/O
0
6
in
Note: Program-verify data output values may be intermediate between 1 and 0 if programming is insufficient.
Figure 18-26 High-Speed, High-Reliability Programming Timing
Auto-erase setup
t
CEH
CES
t
CWC
t
CES
t
WEP
t
CEH
t
WEP
t
WEH
t
DS
t
DH
t
DS
Command
Command
in
in
Command
Command
in
in
Figure 18-25 Auto-Erase Timing
Program
Valid address
t
AH
t
AS
t
CEH
CWC
t
CES
t
PPW
t
t
WEP
CEH
t
WEH
t
DH
DH
t
DS
Data
in
Data
in
622
Auto-erase and status polling
t
CES
t
OEPS
t
AET
t
t
DH
SPA
Status polling
Program-verify
t
CES
t
CEH
t
WEP
t
OERS
t
t
VA
DH
t
DS
Valid data
Command
in
Valid data
Command
in
t
VPH
t
DF
t
VPH
t
DF
out
out
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