M29F400BB STMICROELECTRONICS [STMicroelectronics], M29F400BB Datasheet - Page 33

• Manufacturer Part Number: M29F400BB
• Description: 4 Mbit (512Kb x8 or 256Kb x16, Boot Block) single supply Flash memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M29F400BT, M29F400BB
Figure 10. Write AC waveforms, Chip Enable controlled
Table 14.
1. T
2. Sampled only, not 100% tested.
A0-A17/
A–1
W
G
E
DQ0-DQ7/
DQ8-DQ15
V CC
Symbol
t
RB
t
EHRL
t
VCHWL
t
t
t
t
t
t
t
t
t
t
EHWH
WLEL
DVEH
EHDX
GHEL
EHGL
ELEH
EHEL
ELAX
AVAV
AVEL
A
= 0 to 70 °C, –40 to 85 °C or –40 to 125 °C
(2)
t
t
t
BUSY
t
t
t
t
t
t
t
CPH
t
OEH
Alt
t
VCS
WC
WS
WH
CP
DS
DH
AS
AH
Write AC characteristics, Chip Enable controlled
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
(1)
45
45
40
25
20
40
30
50
0
0
0
0
0
0
DC and AC parameters
tEHWH
M29F400B
tEHGL
tEHEL
tEHDX
55
55
40
25
20
40
30
50
0
0
0
0
0
0
70 / 90
70
45
30
20
45
30
50
0
0
0
0
0
0
AI01870C
33/40
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µ
s