MB84VB2000 データシートの表示（PDF） - Fujitsu
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MB84VB2000 Datasheet PDF : 28 Pages
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MB84VB2000-10/MB84VB2001-10
Table 7 Flash Memory Command Definitions
Command
Sequence
Bus
Write
Cycles
First Bus
Write Cycle
Second Bus
Write Cycle
Third Bus
Write Cycle
Fourth Bus
Read/Write
Cycle
Fifth Bus
Write Cycle
Sixth Bus
Write Cycle
Req’d Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data Addr. Data
Read/Reset
1 XXXH F0H — — — — — — — — — —
Read/Reset
555H
2AAH
555H
3
AAH
55H
F0H RA RD — — — —
AAAH
555H
AAAH
Autoselect
555H
2AAH
555H
3
AAH
55H
90H — — — — — —
AAAH
555H
AAAH
Program
555H
2AAH
555H
4
AAH
55H
A0H PA PD — — — —
AAAH
555H
AAAH
Chip Erase
555H
2AAH
555H
555H
2AAH
555H
6
AAH
55H
80H
AAH
55H
10H
AAAH
555H
AAAH
AAAH
555H
AAAH
Sector Erase
555H
2AAH
555H
555H
2AAH
6
AAH
55H
80H
AAH
55H SA 30H
AAAH
555H
AAAH
AAAH
555H
Sector Erase Suspend Erase can be suspended during sector erase with Addr. (“H” or “L”). Data (B0H)
Sector Erase Resume Erase can be resumed after suspend with Addr. (“H” or “L”). Data (30H)
Set to
Fast Mode
555H
2AAH
555H
3
AAH
55H
20H — — — — — —
AAAH
555H
AAAH
Fast Program
(Note)
XXXH
2
A0H PA PD — — — — — — — —
XXXH
Reset from Fast
Mode (Note)
XXXH
XXXH
2
90H
F0H —
XXXH
XXXH
——
———
——
Extended
Sector Protect
4 XXXH 60H SPA 60H SPA 40H SPA SD — — — —
Address bits A11 to A17 = X = “H” or “L” for all address commands except or Program Address (PA) and Sector
Address (SA).
Bus operations are defined in Tables 2 and 3.
The system should generate the following address patterns:
Word Mode: 555H or 2AAH to addresses A0 to A10
Byte Mode: AAAH or 555H to addresses A-1 and A0 to A10
Both Read/Reset commands are functionally equivalent, resetting the device to the read mode.
RA =Address of the memory location to be read
PA =Address of the memory location to be programmed
Addresses are latched on the falling edge of the write pulse.
SA =Address of the sector to be erased. The combination of A18, A17, A16, A15, A14, A13, and A12 will
uniquely select any sector.
RD =Data read from location RA during read operation.
PD =Data to be programmed at location PA. Data is latched on the falling edge of write pulse.
SPA:Sector address to be protected. Set sector address (SA) and (A6, A1, A0) = (0, 1, 0).
SD:Sector protection verify data. Output 01H at protected sector addresses and output 00H at unprotected
sector addresses.
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