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參數(shù)資料
| 型號： | TMS28F400BZT80BDBJL |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8-BIT/262144 BY 16-BIT BOOT-BLOCK FLASH MEMORIES |
| 中文描述： | 8-BIT/262144由16位啟動塊閃存 |
| 文件頁數(shù)： | 13/29頁 |
| 文件大?。?/td> | 404K |
| 代理商： | TMS28F400BZT80BDBJL |
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TMS28F400BZT, TMS28F400BZB
524288 BY 8-BIT/262144 BY 16-BIT
BOOT-BLOCK FLASH MEMORIES
SMJS400E – JUNE 1994 – REVISED JANUARY 1998
13
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
BUS
OPERATION
COMMAND
COMMENTS
Write
Write-
program
setup
Data =
Addr =
40h or 10h
Address of
word to be
programmed
Write
Write data
Data =
Word to be
programmed
Address of
word to be
programmed
Addr =
Read
Status-register data.
Toggle G or E to update
status register.
Standby
Check SB7
1 = Ready, 0 = Busy
Repeat for subsequent words.
Write FFh after the last word-programming 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
1
=
Word-program
failed
(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. SB4 is cleared only by the clear-status-register command, but it does not prevent additional program operation attempts.
Figure 4. Automated Word-Programming Flowchart
Start
Issue Program-Setup Command
and Word Address
Issue Word Address/Data
Read Status-Register Bits
SB7 = 1
No
Full Status-Register Check
(optional)
See Note A
Yes
Word-Program
Completed
FULL STATUS-REGISTER-CHECK FLOW
Read Status-Register
Bits
SB3 = 0
No
Yes
VPP Range Error
SB4 = 0
No
Yes
Word-Program
Failed
Word-Program Passed
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