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MT28C6428P18 Datasheet(PDF) 7 Page - Micron Technology

Part # MT28C6428P18
Description  FLASH AND SRAM COMBO MEMORY
Download  48 Pages
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Manufacturer  MICRON [Micron Technology]
Direct Link  http://www.micron.com
Logo MICRON - Micron Technology

MT28C6428P18 Datasheet(HTML) 7 Page - Micron Technology

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4 Meg x 16 Asynchronous/Page Flash 512K x 16 SRAM Combo Memory
Micron Technology, Inc., reserves the right to change products or specifications without notice.
MT28C6428P20_3.p65 – Rev. 3, Pub. 7/02
©2002, Micron Technology, Inc.
4 MEG x 16 ASYNCHRONOUS/PAGE FLASH
512K x 16 SRAM COMBO MEMORY
ADVANCE
NOTE: 1. Two devices may not drive the memory bus at the same time.
2. Allowable Flash read modes include read array, read query, read configuration, and read status.
3. Outputs are dependent on a separate device controlling bus outputs.
4. Modes of the Flash and SRAM can be interleaved so that while one is disabled, the other controls outputs.
5. SRAM is enabled and/or disabled with the logical function: S_CE1# or S_CE2.
6. Simultaneous operations can exist, as long as the operations are interleaved such that only one device attempts to
control the bus outputs at a time.
7. Data output on lower byte only; upper byte High-Z.
8. Data output on upper byte only; lower byte High-Z.
9. Data input on lower byte only.
10. Data input on upper byte only.
TRUTH TABLE – FLASH
FLASH SIGNALS
SRAM SIGNALS
MEMORYOUPUT
MODES
F_RP# F_CE# F_OE# F_WE# S_CE1# S_CE2 S_OE# S_WE# S_UB# S_LB#
MEMORY
DQ0–DQ15
NOTES
BUS CONTROL
Read
H
L
L
H
SRAM must be High-Z
Flash
DOUT
1, 2, 3
Write
H
L
H
L
Flash
DIN
1
Standby
H
H
X
X
Other
High-Z
4
Output Disable
H
L
H
H
SRAM any mode allowable
Other
High-Z
4, 5
Reset
L
X
X
X
Other
High-Z
4, 6
TRUTH TABLE – SRAM
FLASH SIGNALS
SRAM SIGNALS
MEMORYOUPUT
MODES
F_RP# F_CE# F_OE# F_WE# S_CE1# S_CE2 S_OE# S_WE# S_UB# S_LB#
MEMORY
DQ0–DQ15
NOTES
BUS CONTROL
Read
DQ0–DQ15
L
H
L
H
L
L
SRAM
DOUT
1, 3
DQ0–DQ7
L
H
L
H
H
L
SRAM
DOUT LB
7
DQ8–DQ15
Flash must be High-Z
L
H
L
H
L
H
SRAM
DOUT UB
8
Write
DQ0–DQ15
L
H
H
L
L
L
SRAM
DIN
1, 3
DQ0–DQ7
L
H
H
L
H
L
SRAM
DIN LB
9
DQ8–DQ15
L
H
H
L
L
H
SRAM
DIN UB
10
Standby
H
X
X
X
X
X
Other
High-Z
4
Flash any mode allowable
X
L
X
X
X
X
Other
High-Z
4
Output Disable
L
H
X
X
X
X
Other
High-Z
4


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