M29W400BT STMICROELECTRONICS [STMicroelectronics], M29W400BT Datasheet - Page 15

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

Table 15. Write AC Characteristics, Write Enable Controlled
(T
Note: 1. Sampled only, not 100% tested.
Figure 9. Write AC Waveforms, Write Enable Controlled
A
t
Symbol
WHRL
t
t
t
t
t
t
t
t
t
t
t
t
WHWL
VCHEL
WLWH
WHDX
WHEH
GHWL
WHGL
= 0 to 70 C or –40 to 85 C)
DVWH
WLAX
ELWL
AVWL
AVAV
A0-A17/
A–1
E
G
W
DQ0-DQ7/
DQ8-DQ15
V CC
RB
(1)
t
t
t
BUSY
t
t
t
WPH
Alt
t
t
t
t
t
t
OEH
VCS
WC
WP
DH
CH
CS
DS
AS
AH
Address Valid to Next Address Valid
Chip Enable Low to Write Enable Low
Write Enable Low to Write Enable High
Input Valid to Write Enable High
Write Enable High to Input Transition
Write Enable High to Chip Enable High
Write Enable High to Write Enable Low
Address Valid to Write Enable Low
Write Enable Low to Address Transition
Output Enable High to Write Enable Low
Write Enable High to Output Enable Low
Program/Erase Valid to RB Low
V
CC
tVCHEL
High to Chip Enable Low
tELWL
tGHWL
tAVWL
Parameter
tAVAV
VALID
tWLWH
tDVWH
tWHRL
VALID
Max
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
Min
tWLAX
M29W400BT, M29W400BB
55
55
40
25
30
40
30
50
tWHEH
0
0
0
0
0
0
tWHGL
tWHWL
M29W400B
tWHDX
70
70
45
30
30
45
30
50
0
0
0
0
0
0
90 / 120
AI01869C
90
45
45
30
45
35
50
0
0
0
0
0
0
Unit
15/22
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s