參數資料
型號: MC68HCP11A1CFN2
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52
封裝: PLASTIC, LCC-52
文件頁數: 90/158頁
文件大?。?/td> 3803K
代理商: MC68HCP11A1CFN2
ON-CHIP MEMORY
MOTOROLA
TECHNICAL DATA
3-11
3
On mask set B96D and newer, the CONFIG register may only be programmed or
erased while the MCU is operating in the test mode or the bootstrap mode. This inter-
lock was added to help prevent accidental changes to the CONFIG register.
The following program segment demonstrates how to program the CONFIG register.
This program assumes that the CONFIG register was previously erased.
The following program segment demonstrates the erase procedure for the CONFIG
register.
*On entry, A = data to be programmed onto CONFIG
PROGC
LDAB
#$02
STAB
$103B
Set EELAT Bit (EEPGM = 0)
STAA
$103F
Store Data to CONFIG Address
LDAB
#$03
STAB
$103B
Turn on Programming Voltage
JSR
DLY10
Delay 10 ms
CLR
$103B
Turn Off High Voltage and Set to READ
Mode
BULKC
LDAB
#$06
STAB
$103B
Set Bulk Erase Mode
STAB
$103F
Write any Data to CONFIG
LDAB
#$07
STAB
$103B
Turn on Programming Voltage
JSR
DLY10
Delay 10 ms
CLR
$103B
Turn Off High Voltage and Set to READ
Mode
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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