參數(shù)資料
型號: TMS28F002AXY
廠商: Texas Instruments, Inc.
英文描述: 262144 BY 8-BIT/131072 BY 16-BIT AUTO-SELECT BOOT-BLOCK FLASH MEMORIES
中文描述: 262144按8-BIT/131072由16位自動選擇啟動塊閃存
文件頁數(shù): 17/79頁
文件大?。?/td> 1064K
代理商: TMS28F002AXY
TMS28F002Axy, TMS28F200Axy
262144 BY 8-BIT/131072 BY 16-BIT
AUTO-SELECT BOOT-BLOCK FLASH MEMORIES
SMJS826D – JANUARY 1996 – REVISED SEPTEMBER 1997
17
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
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. SB4 is cleared only by the clear-status-register command, but it does not prevent additional program operation attempts.
Figure 4. Automated Word-Programming Flow Chart
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
SB3 = 0
No
Yes
VPP-Range Error
SB4 = 0
No
Yes
Word-Program
Failed
Word-Program Passed
Read Status-Register
Bits
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