M27C64A DC and AC parameters
17/22
Figure 8. Programming and Verify Modes AC Waveforms
Table 11. Programming Mode AC Characteristics
(1)(2)
Symbol Alt Parameter Test Condition Min Max Unit
t
AVPL
t
AS
Address Valid to Program Low 2 µs
t
QVPL
t
DS
Input Valid to Program Low 2 µs
t
VPHPL
t
VPS
V
PP
High to Program Low 2 µs
t
VCHPL
t
VCS
V
CC
High to Program Low 2 µs
t
ELPL
t
CES
Chip Enable Low to Program Low 2 µs
t
PLPH
t
PW
Program Pulse Width (Initial) 0.95 1.05 ms
Program Pulse Width (Over Program) 2.85 78.75 ms
t
PHQX
t
DH
Program High to Input Transition 2 µs
t
QXGL
t
OES
Input Transition to Output Enable Low 2 µs
t
GLQV
t
OE
Output Enable Low to Output Valid 100 ns
t
GHQZ
(3)
t
DFP
Output Enable High to Output Hi-Z 0 130 ns
t
GHAX
t
AH
Output Enable High to Address
Transition
0ns
1. T
A
= 25 °C; V
CC
= 6V ± 0.25V; V
PP
= 12.5V ± 0.25V.
2. V
CC
must be applied simultaneously with or before V
PP
and removed simultaneously or after V
PP
.
3. Sampled only, not 100% tested.
tAVPL
VALID
AI00779
A0-A12
Q0-Q7
V
PP
V
CC
P
G
DATA IN DATA OUT
E
tQVPL
tVPHPL
tVCHPL
tPHQX
tPLPH
tGLQV
tQXGL
tELPL
tGHQZ
tGHAX
PROGRAM VERIFY
Obsolete Product(s) - Obsolete Product(s)
