參數(shù)資料
型號(hào): MC68HC05X4
廠商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件頁數(shù): 22/156頁
文件大?。?/td> 926K
代理商: MC68HC05X4
Modes of Operation and Pin Descriptions
MC68HC05X4 Rev 1.0
22
Modes of Operation and Pin Descriptions
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
Figure 5. MC68HC705X4 bootloader flowchart
Bootloader
PB2 = 0
Put RAMSUB
in RAM
A
PB3 = 1
PB4 = 1
Set count
to $0F00
Get byte
from port A
Program byte;
JSR NXTADR
Change instruction
STA to EOR
Increment count to $0F00;
Start addr ¨ $0F00
VERF LED on
Equal
JSR NXTADR
Get byte from Port A;
JSR RAMSUB
WAIT
A
PB4 = 1
End address
($1FFF)
(Reserved)
(Reserved)
(Reserved)
Yes
No
End address
($1FFF)
Verify
PROG/VERF
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
10-modes
F
Freescale Semiconductor, Inc.
n
.
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