M29W400BT STMICROELECTRONICS [STMicroelectronics], M29W400BT Datasheet - Page 16

• Manufacturer Part Number: M29W400BT
• Description: 4 Mbit 512Kb x8 or 256Kb x16, Boot Block Low Voltage Single Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M29W400BT, M29W400BB
Table 16. Write AC Characteristics, Chip Enable Controlled
(T
Note: 1. Sampled only, not 100% tested.
Figure 10. Write AC Waveforms, Chip Enable Controlled
16/22
A
Symbol
t
EHRL
t
t
VCHWL
t
t
t
t
t
t
t
t
t
t
EHWH
= 0 to 70 C or –40 to 85 C)
WLEL
ELEH
DVEH
EHDX
EHEL
GHEL
EHGL
AVAV
AVEL
ELAX
A0-A17/
A–1
W
G
E
DQ0-DQ7/
DQ8-DQ15
V CC
RB
(1)
t
t
t
BUSY
t
t
t
t
Alt
t
t
t
CPH
t
t
OEH
VCS
WC
WS
WH
DH
CP
DS
AS
AH
Address Valid to Next Address Valid
Write Enable Low to Chip Enable Low
Chip Enable Low to Chip Enable High
Input Valid to Chip Enable High
Chip Enable High to Input Transition
Chip Enable High to Write Enable High
Chip Enable High to Chip Enable Low
Address Valid to Chip Enable Low
Chip Enable Low to Address Transition
Output Enable High Chip Enable Low
Chip Enable High to Output Enable Low
Program/Erase Valid to RB Low
V
CC
tVCHWL
High to Write Enable Low
tWLEL
tGHEL
tAVEL
Parameter
tAVAV
VALID
tELEH
tDVEH
tEHRL
VALID
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
tELAX
55
55
40
25
30
40
30
50
tEHWH
0
0
0
0
0
0
tEHGL
tEHEL
M29W400B
tEHDX
70
70
45
30
30
45
30
50
0
0
0
0
0
0
90 / 120
AI01870C
90
45
45
30
45
35
50
0
0
0
0
0
0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s