m28w640fcb STMicroelectronics, m28w640fcb Datasheet - Page 23

• Manufacturer Part Number: m28w640fcb
• Description: 64 Mbit 4mb X16, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

M28W640FCT, M28W640FCB
Table 4.
1. X = Don't Care,RA=Read Address,RD=Read Data, SRD=Status Register Data, ID=Identifier (Manufacture and Device
2. The signature addresses are listed in Tables 5,
3. Program Addresses 1 and 2 must be consecutive Addresses differing only for A0.
4. Program Addresses 1,2,3 and 4 must be consecutive Addresses differing only for A0 and A1.
Read Memory
Array
Read Status
Register
Read
Electronic
Signature
Read CFI
Query
Erase
Program
Double Word
Program
Quadruple
Word
Program
Clear Status
Register
Program/Erase
Suspend
Program/Erase
Resume
Block Lock
Block Unlock
Block Lock-
Down
Protection
Register
Program
Commands
Code), QA=Query Address, QD=Query Data, BA=Block Address, PA=Program Address, PD=Program Data,
PRA=Protection Register Address, PRD=Protection Register Data.
(3)
(4)
Commands
1+ Write
1+ Write
1+ Write
1+ Write
2
2
3
5
1
1
1
2
2
2
2
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Op. Add Data
1st Cycle
(1)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
40h or
FFh
B0h
D0h
C0h
70h
90h
98h
20h
10h
30h
56h
50h
60h
60h
60h
Read
Read
Read SA
Read
Write
Write
Write PA1
Write PA1
Write
Write
Write
Write PRA PRD
Op.
2nd Cycle
6
and 7.
Add Data
RA
QA
BA
BA
BA
BA
PA
X
(2)
SRD
PD1 Write PA2 PD2
PD1 Write PA2 PD2 Write PA3 PD3 Write PA4 PD4
D0h
D0h
01h
2Fh
IDh
RD
QD
PD
Bus Write operations
Op. Add Data Op. Add Data Op. Add Data
3rd Cycle
4th Cycle
Command interface
5th Cycle
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