DC and AC parameters M27C512
16/22
Figure 9. Programming and Verify modes AC waveforms
Table 13. Programming mode AC characteristics
Symbol Alt Parameter
Test
Condition
(1)(2)
Min Max Unit
t
AVEL
t
AS
Address Valid to Chip Enable Low 2 µs
t
QVEL
t
DS
Input Valid to Chip Enable Low 2 µs
t
VCHEL
t
VCS
V
CC
High to Chip Enable Low 2 µs
t
VPHEL
t
OES
V
PP
High to Chip Enable Low 2 µs
t
VPLVPH
t
PRT
V
PP
Rise Time 50 ns
t
ELEH
t
PW
Chip Enable Program Pulse Width
(Initial)
95 105 µs
t
EHQX
t
DH
Chip Enable High to Input Transition 2 µs
t
EHVPX
t
OEH
Chip Enable High to V
PP
Transition 2 µs
t
VPLEL
t
VR
V
PP
Low to Chip Enable Low 2 µs
t
ELQV
t
DV
Chip Enable Low to Output Valid 1 µs
t
EHQZ
(3)
t
DFP
Chip Enable High to Output Hi-Z 0 130 ns
t
EHAX
t
AH
Chip Enable High to Address Transition 0 ns
1. T
A
= 25 °C; V
CC
= 6.25V ± 0.25V; V
PP
= 12.75V ± 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.
AI00737
tVPLEL
PROGRAM
DATA IN
A0-A15
E
GV
PP
Q0-Q7
DATA OUT
tAVEL
tQVEL
tVCHEL
tVPHEL
tEHQX
tEHVPX
tELEH
tELQV
tEHAX
tEHQZ
VERIFY
VALID
V
CC
