m36w832te STMicroelectronics, m36w832te Datasheet - Page 22

• Manufacturer Part Number: m36w832te
• Description: 32 Mbit 2mb X16, Boot Block Flash Memory And 8 Mbit 512kb X16 Sram, Multiple Memory Product
• Manufacturer: STMicroelectronics

M36W832TE, M36W832BE
Table 9. Block Lock Status
Table 10. Protection Status
Note: 1. The lock status is defined by the write protect pin and by DQ1 (‘1’ for a locked-down block) and DQ0 (‘1’ for a locked block) as read
22/64
Current State
2. All blocks are locked at power-up, so the default configuration is 001 or 101 according to WPF status.
3. A WPF transition to V
1,0,1
0,0,1
1,0,0
1,1,0
1,1,1
0,0,0
0,1,1
in the Read Electronic Signature command with A1 = V
(WPF, DQ1, DQ0)
(2)
(2)
Lock Status
Current
Block Lock Configuration
Block is Locked-Down
Program/Erase
Block is Unlocked
Block is Locked
(1)
Allowed
IH
yes
yes
yes
no
no
no
no
on a locked block will restore the previous DQ0 value, giving a 111 or 110.
Item
Block Lock
Command
After
1,0,1
1,0,1
1,1,1
1,1,1
0,0,1
0,0,1
0,1,1
IH
and A0 = V
Block Unlock
Command
After
1,0,0
1,0,0
1,1,0
1,1,0
0,0,0
0,0,0
0,1,1
IL
.
Next Lock Status
(WPF, DQ1, DQ0)
Address
xx002
After Block
Lock-Down
Command
1,1,1
1,1,1
1,1,1
1,1,1
0,1,1
0,1,1
0,1,1
(1)
WPF transition
1,1,1 or 1,1,0
DQ0=0
DQ0=1
DQ1=1
LOCK
Data
After
0,0,0
0,0,1
0,1,1
0,1,1
1,0,0
1,0,1
(3)