M28W800BT Datasheet, PDF (13/42 Pages) STMicroelectronics – 8 Mbit 512Kb x16, Boot Block 3V Supply Flash Memory

M28W800BT, M28W800BB
Table 3. Commands
Bus Write Operations
Commands
No. of
Cycles
1st Cycle
Bus
Op.
Addr Data
2nd Cycle
Bus
Op.
Addr
Data
3nd Cycle
Bus
Op.
Addr
Data
Read Memory Array
1+
Write X
FFh Read
Read
Addr
Data
Read Status Register
1+
Write X
70h Read
X
Status
Register
Read Electronic Signature 1+
Write X
Signature
90h Read _{Addr (2)} Signature
Read CFI Query
1+
Write X
98h _Read CFI Addr Query
Erase
2
Write
X
20h Write
Block
Addr
D0h
Program
2
Write
X
40h or
10h
Write
Addr
Data
Input
Double Word Program⁽³⁾
3
Write X
30h Write Addr 1
Data
Input
Write
Addr 2
Data
Input
Clear Status Register
1
Write
X
50h
Program/Erase Suspend
1
Write
X
B0h
Program/Erase Resume
1
Write X D0h
Note: 1. X = Don't Care.
2. A0=VIL outputs Manufacturer code, A0=VIH outputs Device code. Address A7-A1 must be VIL.
3. Addr 1 and Addr 2 must be consecutive Addresses differing only for A0.
Table 4. Read Electronic Signature
Code
Device
E
G
W
A0 A1-A7 A8-A18 DQ0-DQ7 DQ8-DQ15
Manufact. Code
V_IL
V_IL
V_IH
V_IL
V_IL Don't Care
20h
00h
M28W800BT VIL
V_IL
V_IH
V_IH
V_IL Don't Care
92h
88h
Device Code
M28W800BB VIL
V_IL
V_IH
V_IH
V_IL Don't Care
93h
88h
Note: RP = V_IH.
Table 5. Memory Blocks Protection Truth Table
V_PP ⁽¹⁾
RP
WP ⁽¹⁾
Lockable Blocks
(blocks #0 and #1)
X
V_IL
X
Protected
V_IL
V_IH
X
Protected
V_DD or V_PPH ⁽²⁾
V_IH
V_IL
Protected
V_DD or V_PPH ⁽²⁾
V_IH
V_IH
Unprotected
Note: 1. X = Don't Care
2. VPP must also be greater than the Program Voltage Lock Out VPPLK.
Other Blocks
Protected
Protected
Unprotected
Unprotected
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