参数资料
型号: RC28F256P33T85A
厂商: NUMONYX
元件分类: PROM
英文描述: 16M X 16 FLASH 3V PROM, 85 ns, PBGA64
封装: BGA-64
文件页数: 71/96页
文件大小: 1378K
代理商: RC28F256P33T85A
November 2007
Datasheet
Order Number: 314749-05
73
Numonyx StrataFlash Embedded Memory (P33)
Figure 37: Block Erase Flowchart
Start
FULL ERASE STATUS CHECK PROCEDURE
Repeat for subsequent block erasures.
Full Status register check can be done after each block erase
or after a sequence of block erasures.
Write 0xFF after the last operation to enter read array mode.
Only the Clear Status Register command clears SR[1, 3, 4, 5].
If an error is detected, clear the Status register before
attempting an erase retry or other error recovery.
No
Suspend
Erase
1
0
1
1,1
1
0
Yes
Suspend
Erase
Loop
0
Write 0x20,
Block Address
Write 0xD0,
Block Address
Read Status
Register
SR[7] =
Full Erase
Status Check
(if desired)
Block Erase
Complete
Read Status
Register
Block Erase
Successful
SR[1] =
Block Locked
Error
BLOCK ERASE PROCEDURE
Bus
Operation Command
Comments
Write
Block
Erase
Setup
Data = 0x20
Addr = Block to be erased (BA)
Write
Erase
Confirm
Data = 0xD0
Addr = Block to be erased (BA)
Read
None
Status Register data.
Idle
None
Check SR[7]:
1 = WSM ready
0 = WSM busy
Bus
Operation
Command
Comments
SR[3] =
V
PP Range
Error
SR[4,5] =
Command
Sequence Error
SR[5] =
Block Erase
Error
Idle
None
Check SR[3]:
1 = V
PP Range Error
Idle
None
Check SR[4,5]:
Both 1 = Command Sequence Error
Idle
None
Check SR[5]:
1 = Block Erase Error
Idle
None
Check SR[1]:
1 = Attempted erase of locked block;
erase aborted.
(Block Erase)
(Erase Confirm)
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