MT28F004B5-1 Micron, MT28F004B5-1 Datasheet - Page 28

• Manufacturer Part Number: MT28F004B5-1
• Description: FLASH MEMORY
• Manufacturer: Micron

TIMING PARAMETERS
Commercial Temperature (0ºC £ T
Extended Temperature (-40ºC £ T
Notes: 1. Address inputs are “Don’t Care” but must be held stable.
4Mb Smart 5 Boot Block Flash Memory
MT28F004B5_3.fm - Rev. 3, Pub. 8/2002
SYMBOL
t
t
t
t
t
t
t
t
t
t
WC
WPH
WP
AS
AH
DS
DH
CS
CH
VPS1
4
4
A0–A17/(A18)
4
DQ0–DQ15
DQ0–DQ7/
2. If BYTE# is LOW, data and command are 8-bit. If BYTE# is HIGH, data is 16-bit and command is 8-bit
3. Either RP# at V
WP#
RP#
WE#
(MT28F400B5 only).
OE#
CE#
V
PP
2
3
3
V
V
V
PPLK
PPH
V
V
V
V
V
V
V
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 WS
t RS
WRITE SETUP or
HH
t CP
t DS
MIN
200
80
30
50
50
50
t AS
0
0
0
0
or WP# HIGH unlocks the boot block.
Note 1
-8/-8 ET
CMD
in
A
A
£ +85ºC)
t AH
£ +70ºC)
MAX
CE#-CONTROLLED WRITE/ERASE
t WH
t CPH
t WC
t DH
WRITE or ERASE (block)
t DS
WRITE data or ERASE
address asserted, and
CONFIRM issued
t VPS1
t AS
t RHS
WRITE/ERASE CYCLE
Data-in
CMD/
UNITS
A
IN
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
[Unlock boot block]
[Unlock boot block]
SMART 5 BOOT BLOCK FLASH MEMORY
t AH
[5V V
t DH
t WED1/2/3/4
28
PP
t WB
]
SYMBOL
t
t
t
t
t
t
t
t
t
RS
RHS
WED1
WED2
WED3
WED4
WB
VPH
RHH
(SR7=0)
Status
executed, status register
checked for completion
WRITE or ERASE
(SR7=1)
Status
t VPH
t RHH
1,000
MIN
100
100
100
500
200
4.5
0
0
-8/-8 ET
Command for next
operation issued
MAX
DON’T CARE
CMD
©2002, Micron Technology Inc.
in
4Mb
UNITS
ms
ms
ms
ns
ns
µs
ns
ns
ns