參數(shù)資料
型號： TMS28F004AMB70CDBJL
廠商： Texas Instruments, Inc.
英文描述： 524288 BY 8-BIT/262144 BY 16-BIT AUTO-SELECT BOOT-BLOCK FLASH MEMORIES
中文描述： 524288按8-BIT/262144由16位自動選擇啟動塊閃存
文件頁數(shù)： 19/80頁
文件大小： 1080K
代理商： TMS28F004AMB70CDBJL
TMS28F004Axy, TMS28F400Axy
524288 BY 8-BIT/
262
144 BY 16-BIT
AUTO-SELECT BOOT-BLOCK FLASH MEMORIES
SMJS829A – JANUARY 1996 – REVISED AUGUST 1997
19
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
BUS
OPERATION
COMMAND
COMMENTS
Write
Write erase
setup
Data =
Block Addr =
20h
Address
within
block to
be
erased
Write
Erase
Data =
Block Addr =
D0h
Address
within
block to
be
erased
Read
Status-register data.
Toggle G or E to update
status register
Standby
Check SB7
1 = Ready, 0 = Busy
Repeat for subsequent blocks
Write FFh after the last block-erase operation to reset the
device to read-array mode.
BUS
OPERATION
COMMAND
COMMENTS
Standby
Check SB3
1 = Detect VPP low
(see Note B)
Standby
Check SB4 and SB5
1 = Block-erase
error
Standby
Check SB5
1 = Block-erase error
(see Note C)
NOTES: A. Full status-register check can be done after each word or after a sequence of words.
B. SB3 must be cleared before attempting additional program/erase operations.
C. SB5 is cleared only by the clear-status-register command in cases where multiple blocks are erased before full status is checked.
Figure 5. Automated Block-Erase Flow Chart
Start
Issue Erase-Setup Command
and Block Address
Issue Block-Erase-Confirm
Command and
Block Address
Read Status-Register Bits
SB7 = 1
No
Full Status-Register
Check (optional)
See Note A
Yes
Block-Erase Completed
FULL STATUS-REGISTER-CHECK FLOW
SB3 = 0
No
Yes
VPP Range Error
SB4 = 1,
SB5 = 1
Yes
No
Command Sequence
Error
Block-Erase Passed
Erase
Suspend
Yes
No
Erase-
Suspend
Loop
SB5 = 0
No
Block-Erase Failed
Yes
Read Status-Register
Bits
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