M27C64A
Table 11.
Symbol
t
AVPL
t
QVPL
t
VPHPL
t
VCHPL
t
ELPL
t
PLPH
t
PHQX
t
QXGL
t
GLQV
t
GHQZ(3)
t
GHAX
DC and AC parameters
Programming Mode AC Characteristics
(1)(2)
Alt
t
AS
t
DS
t
VPS
t
VCS
t
CES
t
PW
t
DH
t
OES
t
OE
t
DFP
t
AH
Parameter
Address Valid to Program Low
Input Valid to Program Low
V
PP
High to Program Low
V
CC
High to Program Low
Chip Enable Low to Program Low
Program Pulse Width (Initial)
Program Pulse Width (Over Program)
Program High to Input Transition
Input Transition to Output Enable Low
Output Enable Low to Output Valid
Output Enable High to Output Hi-Z
Output Enable High to Address
Transition
0
0
Test Condition
Min
2
2
2
2
2
0.95
2.85
2
2
100
130
1.05
78.75
Max
Unit
µs
µs
µs
µs
µs
ms
ms
µs
µs
ns
ns
ns
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.
Figure 8.
Programming and Verify Modes AC Waveforms
A0-A12
tAVPL
Q0-Q7
tQVPL
VPP
tVPHPL
VCC
tVCHPL
E
tELPL
P
tPLPH
G
tQXGL
tGHAX
tGLQV
tGHQZ
DATA IN
tPHQX
DATA OUT
VALID
PROGRAM
VERIFY
AI00779
17/22
STMICROELECTRONICS [ STMICROELECTRONICS ]
