m28w320bb STMicroelectronics, m28w320bb Datasheet - Page 13

• Manufacturer Part Number: m28w320bb
• Description: 32 Mbit 2mb X16, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

Table 3. Commands
Note: 1. X = Don't Care.
Table 4. Read Electronic Signature
Note:
Table 5. Memory Blocks Protection Truth Table
Note: 1. X = Don't Care
Manufacture.
Code
Device Code
Read Memory Array
Read Status Register
Read Electronic Signature
Read CFI Query
Erase
Program
Double Word Program
Clear Status Register
Program/Erase Suspend
Program/Erase Resume
V
V
DD
DD
2. A0=V
3. Addr 1 and Addr 2 must be consecutive Addresses differing only for A0.
Code
2. V
Commands
V
or V
or V
RP = V
PP
V
PP
X
IL
(1)
PPH
PPH
must also be greater than the Program Voltage Lock Out V
IL
IH
outputs Manufacturer code, A0=V
.
(2)
(2)
M28W320CT
M28W320CB
(3)
Device
Cycles
No. of
RP
V
V
V
V
1+
1+
1+
1+
2
2
3
1
1
1
IH
IH
IH
IL
V
V
V
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Bus
E
Op.
IL
IL
IL
1st Cycle
IH
V
V
V
G
WP
Addr
IL
IL
IL
outputs Device code. Address A7-A1 must be V
V
V
X
X
X
X
X
X
X
X
X
X
X
X
IH
IL
(1)
V
V
V
W
IH
IH
IH
40h or
Data
FFh
B0h
D0h
70h
90h
98h
20h
10h
30h
50h
V
V
V
A0
IH
IH
IL
Read
Read
Read
Read
Write
Write
Write
Bus
Op.
(blocks #0 and #1)
PPLK
Lockable Blocks
Bus Write Operations
A1-A7
Unprotected
.
V
V
V
Protected
Protected
Protected
IL
IL
IL
Signature
2nd Cycle
CFI Addr
Addr
Addr 1
Addr
Read
Block
Addr
Addr
Addr
X
(2)
Don't Care
Don't Care
Don't Care
A8-A20
Signature
Register
Status
Query
Data
M28W320BT, M28W320BB
Input
Input
Data
Data
Data
D0h
IL
.
DQ0-DQ7
Write
Bus
Op.
BCh
BDh
20h
Other Blocks
Unprotected
Unprotected
Protected
Protected
3nd Cycle
Addr 2
Addr
DQ8-DQ15
00h
88h
88h
Data
Input
Data
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