BRIGHT
Microelectronics
Inc.
Preliminary BM29F400T/BM29F400B
AC CHARACTERISTICS
Programming/Erase Operations
PARAMETER
SYM.
DESCRIPTION
-90
-120
-150
UNIT
JEDEC
Standard
(1)
t
t
Write Cycle Time
Min.
Min.
Min.
Min.
Min.
Min.
Min.
Min.
90
0
120
0
150
0
nS
nS
nS
nS
nS
nS
nS
nS
AVAV
WC
t
t
t
Address Setup Time
Address Hold Time
Data Setup Time
AVWL
WLAX
AS
AH
DS
DH
t
t
45
45
0
50
50
0
50
50
0
t
DVWH
WHDX
t
t
Data Hold Time
t
Output Enable Setup Time
0
0
0
OES
OEH
(1)
Read
t
Output Enable
Hold Time
0
0
0
10
10
10
(1)
Polling
Toggle &
Data
t
t
t
Read Recover Time Before Write
CE Setup Time
Min.
Min.
0
0
0
0
0
0
nS
nS
GHWL
GHWL
t
t
ELWL
CS
t
Min.
0
0
0
nS
WHEH
CH
CE Hold Time
t
t
t
Write Pulse Width
Min.
Min.
45
20
50
20
50
20
nS
nS
WLWH
WP
t
Write Pulse Width High
Byte Programming Operation
WHWL
WPH
t
t
t
t
t
t
Typ.
Max.
16
400
16
400
16
400
uS
uS
WHWH1
WHWH2
WHWH3
WHWH1
WHWH2
WHWH3
(2)
Sector Erase Operation
Typ. Max.
0.26
12
0.26
12
0.26
12
sec
(2)
Chip Erase Operation
(1)
Typ.
Max.
2.0
90
2.0
90
2.0
90
sec
t
Vcc Setup Time
Min.
Min.
Min.
50
500
4
50
500
4
50
500
4
mS
nS
VCS
(1,3)
Rise Time to VID
t
VIDR
t
mS
OESP
(1, 3, 4)
OE Setup Time to WE Active
t
Min.
Min.
500
4
500
4
500
4
nS
uS
RP
RESET Pulse Width
t
RSP
( 3)
RESET Setup Time
(1)
t
Programming/Erase Valid to RY/BY Delay
Min.
Min.
Min.
Min.
Min.
40
4
50
4
60
4
nS
mS
mS
mS
nS
BUSY
(1, 4)
t
Voltage Transition Time
Sector Protect Write Pulse Width
Sector Unprotect Write Pulse Width
VLHT
(4)
(4)
t
t
100
350
4
100
350
4
100
350
4
WPP1
WPP2
t
CSP
(1, 4)
CE Setup Time to WE Active
Notes:
1. Not 100% tested.
2. Does not include pre-programming time.
3. This timing is for Temporary Sector Unprotect operation.
These timings are for Sector Protect and/or Sector Unprotect operations.
A Winbond Company
- 25 -
Publication Release Date: May 1999
Revision A1
WINBOND [ WINBOND ]
