AC Waveforms for Write and Erase Operations, CE Controlled
V
CC
Power-up
Standby
V
IH
Write
Write Program or
Valid Address & Data (Program)
Erase Setup Command
or Erase Confirm Command
Automated Program
or Erase Delay
Read Status
Register Data
Write Read Array
Command
Addresses
V
IL
A
IN
A
IN
t
AVAV
V
IH
t
AVEH
t
EHAX
WE
V
IL
t
WLEL
t
EHWH
V
IH
OE
V
IL
t
EHEL
V
IH
t
EHQV1,2,3,4
CE
V
IL
t
ELEH
t
EHDX
t
DVEH
V
IH
Data
V
IL
High Z
t
PHEL
D
IN
D
IN
Valid
SRD
D
IN
t
PHHEH
V
HH
t
QVPH
6.5V
V
IH
RP
V
IL
V
IH
WP
V
IL
t
VPEH
V
PPH
2
V
PPH
1
V
PPLK
V
IL
t
QVVL
V
PP
AC Waveform For Read Operations
Standby
Device and
Address Selection
Outputs Enabled
Addresses Stable
V
IL
Data Valid
Standby
V
IH
Addresses
t
AVAV
V
IH
CE
V
IL
t
EHQZ
V
IH
OE
V
IL
V
IH
t
GHQZ
t
GLQV
WE
V
IL
t
ELQV
t
GLQX
t
ELQX
V
OH
t
OH
High Z
Valid Output
Data
V
OL
High Z
t
AVQV
V
IH
RP
V
IL
t
PHQV
Aeroflex Circuit Technology
7
SCD1661B REV A 1/16/97 Plainview NY (516) 694-6700
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
