參數(shù)資料
型號： M37641F8FP
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 12 MHz, MICROCONTROLLER, PQFP80
封裝： 14 X 20 MM, 0.80 MM, PLASTIC, QFP-80
文件頁數(shù)： 33/140頁
文件大?。?/td> 1694K
代理商： M37641F8FP
7641 Group
Rev.4.00
Aug 28, 2006
page 126 of 135
REJ03B0191-0400
qStatus Register 1 (SRD1)
The status register 1 indicates the status of serial communica-
tions, results from ID checks and results from check sum
comparisons. It can be read after the status register (SRD) by writ-
ing the read status register command (7016). Also, status register
1 is cleared by writing the clear status register command (5016).
Table 31 lists the definition of each status register 1 bit. This regis-
ter becomes “0016” when power is turned on and the flag status is
maintained even after the reset.
Table 31 Definition of each bit of status register 1 (SRD1)
00
Not verified
01
Verification mismatch
10
Reserved
11
Verified
SR15 (bit7)
SR14 (bit6)
SR13 (bit5)
SR12 (bit4)
SR11 (bit3)
SR10 (bit2)
SR9 (bit1)
SR8 (bit0)
Boot update completed bit
Reserved
Checksum match bit
ID code check completed bits
Data reception time out
Reserved
“1”
Update completed
-
Match
Time out
-
“0”
Not Update
-
Mismatch
Normal operation
-
Definition
SRD1 bits
Status name
Boot update completed bit (SR15)
This flag indicates whether the control program was downloaded
to the RAM or not, using the download function.
Check sum consistency bit (SR12)
This flag indicates whether the check sum matches or not when a
program, is downloaded for execution using the download func-
tion.
ID code check completed bits (SR11 and SR10)
These flags indicate the result of ID code checks. Some com-
mands cannot be accepted without an ID code check.
Data reception time out (SR9)
This flag indicates when a time out error is generated during data
reception. If this flag is attached during data reception, the re-
ceived data is discarded and the MCU returns to the command
wait state.
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