MT28F004B5 Micron, MT28F004B5 Datasheet - Page 26

• Manufacturer Part Number: MT28F004B5
• Description: FLASH MEMORY
• Manufacturer: Micron

SPEED-DEPENDENT WRITE/ERASE AC TIMING CHARACTERISTICS AND
RECOMMENDED AC OPERATING CONDITIONS: CE#-CONTROLLED WRITES
Commercial Temperature (0°C ≤ T
+5V ±5%
WORD/BYTE WRITE AND ERASE DURATION CHARACTERISTICS
NOTE: 1. Measured with V
4Mb Smart 5 Boot Block Flash Memory
F44_B.p65 – Rev. 7/02
AC CHARACTERISTICS
PARAMETER
Address setup time to CE# HIGH
Address hold time from CE# HIGH
Data setup time to CE# HIGH
Data hold time from CE# HIGH
WE# setup time to CE# LOW
WE# hold time from CE# HIGH
V
RP# HIGH to CE# LOW delay
RP# at V
WRITE duration (WORD or BYTE WRITE)
Boot BLOCK ERASE duration
Parameter BLOCK ERASE duration
Main BLOCK ERASE duration
CE# HIGH to busy status (SR7 = 0)
V
RP# at V
Boot block relock delay time
PARAMETER
Boot/parameter BLOCK ERASE time
Main BLOCK ERASE time
Main BLOCK WRITE time (byte mode)
Main BLOCK WRITE time (word mode)
PP
PP
setup time to CE# HIGH
hold time from status data valid
2. RP# should be held at V
3. WRITE/ERASE times are measured to valid status register data (SR7 = 1).
4. Polling status register before
5.
6. Typical values measured at T
7. Assumes no system overhead.
8. Typical WRITE times use checkerboard data pattern.
HH
HH
t
REL is required to relock boot block after WRITE or ERASE to boot block.
or WP# HIGH setup time to CE# HIGH
or WP# HIGH hold time from status data valid
PP
= V
PPH 1
HH
or WP# held HIGH until boot block WRITE or ERASE is complete.
= 5V.
A
A
≤ +70°C) and Extended Temperature (-40°C ≤ T
t
WB is met may falsely indicate WRITE or ERASE completion.
= +25°C.
SMART 5 BOOT BLOCK FLASH MEMORY
SYMBOL
t
t
t
t
t
WED1
WED2
WED3
WED4
t
t
t
t
VPS1
t
t
t
t
t
VPH
RHH
t
t
RHS
26
WH
t
REL
WB
AH
DH
WS
AS
DS
RS
Micron Technology, Inc., reserves the right to change products or specifications without notice.
MIN
200
500
100
300
300
600
200
50
50
0
0
0
0
6
0
0
-6/-8/-8 ET
MAX
100
A
≤ +85°C); V
TYP MAX UNITS NOTES
0.5
1.5
1
1
UNITS
ms
ms
ms
14
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
7
–
–
CC
= +5V ±10% or
©2002, Micron Technology, Inc.
s
s
s
s
NOTES
4Mb
2, 3
6, 7, 8
6, 7, 8
1
2
3
3
3
4
3
2
5
6
6