m27c400 STMicroelectronics, m27c400 Datasheet - Page 9

• Manufacturer Part Number: m27c400
• Description: 4 Mbit 512kb X8 Or 256kb X16 Uv Eprom And Otp Eprom
• Manufacturer: STMicroelectronics

Table 10. Programming Mode AC Characteristics
(T
Note: 1. V
Figure 8. Programming and Verify Modes AC Waveforms
A
t
Symbol
GHQZ
t
t
t
t
t
VCHAV
t
t
VPHAV
t
t
= 25 °C; V
EHQX
QXGL
GLQV
GHAX
QVEL
ELEH
AVEL
2. Sampled only, not 100% tested.
(2)
CC
A0-A17
Q0-Q15
BYTEV PP
V CC
E
G
must be applied simultaneously with or before V
CC
t
t
t
t
t
t
VCS
t
OES
t
t
Alt
t
VPS
DFP
PW
DH
OE
AS
DS
AH
= 6.25V ± 0.25V; V
Address Valid to Chip Enable Low
Input Valid to Chip Enable Low
V
V
Chip Enable Program Pulse Width
Chip Enable 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
PP
CC
High to Address Valid
High to Address Valid
tVPHAV
tVCHAV
Parameter
PP
tAVEL
= 12.5V ± 0.25V)
tQVEL
tELEH
DATA IN
PROGRAM
PP
and removed simultaneously or after V
(1)
VALID
tEHQX
Test Condition
tQXGL
VERIFY
tGLQV
DATA OUT
PP
.
Min
45
2
2
2
2
2
0
0
2
tGHQZ
tGHAX
Max
AI01639
120
130
55
M27C400
Unit
µs
µs
µs
µs
µs
µs
µs
ns
ns
ns
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