MT28F004B5 Micron, MT28F004B5 Datasheet - Page 27

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

TIMING PARAMETERS
Commercial Temperature (0°C ≤ T
Extended Temperature (-40°C ≤ T
NOTE: 1. Address inputs are “Don’t Care” but must be held stable.
4Mb Smart 5 Boot Block Flash Memory
F44_B.p65 – Rev. 7/02
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
WC
WC
WPH
WPH
WP
WP
AS
AH
DS
DH
CS
A0–A17/(A18)
4
5
4
5
DQ0–DQ15
DQ0–DQ7/
4
5
2. If BYTE# is LOW, data and command are 8-bit. If BYTE# is HIGH, data is 16-bit and command is 8-bit (MT28F400B5
3. Either RP# at V
4. Measurements tested under AC Test Condition 1, V
5. Measurements tested under AC Test Condition 2, V
WP#
RP#
WE#
only).
OE#
CE#
V
PP
2
3
3
V
V
V
PPLK
V
V
V
V
V
V
V
PPH
V
V
V
V
V
V
V
V
HH
IH
IH
IH
IH
IH
IH
IH
IL
IL
IL
IL
IL
IL
IL
IL
ERASE SETUP input
t CS
HH
t RS
WRITE SETUP or
t WP
t DS
or WP# HIGH unlocks the boot block.
MIN
70
60
20
20
50
50
50
50
t AS
0
0
0
Note 1
-6
MAX
CMD
in
A
A
≤ +85°C)
≤ +70°C)
t AH
WE#-CONTROLLED WRITE/ERASE
MIN
t CH
t WPH
t WC
80
30
50
50
50
t DH
–
–
–
0
0
0
-8/-8 ET
WRITE or ERASE (block)
t DS
WRITE data or ERASE
address asserted, and
CONFIRM issued
MAX
t VPS1
t AS
t RHS
WRITE/ERASE CYCLE
Data-in
CMD/
A
IN
UNITS
SMART 5 BOOT BLOCK FLASH MEMORY
[Unlock boot block]
[Unlock boot block]
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
t AH
[5V V
t DH
t WED1/2/3/4
CC
CC
27
PP
= 5V ±10%.
= 5V ±5%.
t WB
]
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
CH
VPS1
RS
RHS
WED1
WED2
WED3
WED4
WB
VPH
RHH
Micron Technology, Inc., reserves the right to change products or specifications without notice.
(SR7=0)
Status
executed, status register
checked for completion
WRITE or ERASE
(SR7=1)
Status
t VPH
t RHH
MIN
200
500
100
300
300
600
200
0
6
0
0
-6
MAX
Command for next
operation issued
MIN
200
500
100
300
300
600
200
©2002, Micron Technology, Inc.
0
6
0
0
-8/-8 ET
DON’T CARE
CMD
in
MAX
4Mb
UNITS
ms
ms
ms
ns
ns
ns
ns
µs
ns
ns
ns