MBM29F800BA 데이터 시트보기 (PDF) - Fujitsu
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MBM29F800BA Datasheet PDF : 48 Pages
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MBM29F800TA-55/-70/-90/MBM29F800BA-55/-70/-90
Table 4 .1 MBM29F800TA/BA Sector Protection Verify Autoselect Codes
Type
A12 to A18
A6
A1
A0
A-1*1
Manufacture’s Code
X
VIL
VIL
VIL
VIL
Byte
MBM29F800TA
X
Word
Device Code
Byte
MBM29F800BA
X
Word
VIL
VIL
VIL
VIH
X
VIL
VIL
VIL
VIH
X
Sector Protection
Sector
Addresses
VIL
VIH
VIL
VIL
*1: A-1 is for Byte mode.
*2: Outputs 01H at protected sector addresses and outputs 00H at unprotected sector addresses.
Code
(HEX)
04H
D6H
22D6H
58H
2258H
01H*2
Table 4 .2 Expanded Autoselect Code Table
Type
Code DQ15 DQ14 DQ13 DQ12 DQ11 DQ10 DQ9 DQ8 DQ7 DQ6 DQ5 DQ4 DQ3 DQ2 DQ1 DQ0
Manufacture’s Code
04H A-1/0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0
Device
Code
(B) D6H A-1 HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z 1 1 0 1 0 1 1 0
MBM29F800TA
(W) 22D6H 0 0 1 0 0 0 1 0 1 1 0 1 0 1 1 0
(B) 58H A-1 HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z HI-Z 0 1 0 1 1 0 0 0
MBM29F800BA
(W) 2258H 0 0 1 0 0 0 1 0 0 1 0 1 1 0 0 0
Sector Protection
01H A-1/0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
(B): Byte mode
(W): Word mode
Write
Device erasure and programming are accomplished via the command register. The contents of the register serve
as inputs to the internal state machine. The state machine outputs dictate the function of the device.
The command register itself does not occupy any addressable memory location. The register is a latch used to
store the commands, along with the address and data information needed to execute the command. The
command register is written by bringing WE to VIL, while CE is at VIL and OE is at VIH. Addresses are latched on
the falling edge of WE or CE, whichever happens later; while data is latched on the rising edge of WE or CE,
whichever happens first. Standard microprocessor write timings are used.
Refer to AC Write Characteristics and the Erase/Programming Waveforms for specific timing parameters.
Sector Protection
The MBM29F800TA/BA features hardware sector protection. This feature will disable both program and erase
operations in any number of sectors (0 through 18). The sector protection feature is enabled using programming
equipment at the user’s site. The device is shipped with all sectors unprotected.
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