参数资料
型号: MC68HC11A0CP3
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP48
封装: PLASTIC, DIP-48
文件页数: 87/158页
文件大小: 3803K
代理商: MC68HC11A0CP3
ON-CHIP MEMORY
MC68HC11A8
3-8
TECHNICAL DATA
3
3.5.2.3 Bulk Erase
The following program segment demonstrates how to bulk erase the 512-byte EE-
PROM. The CONFIG register is not affected in this example.
3.5.2.4 Row Erase
The following program segment demonstrates the row erase function. A ‘row’ is six-
teen bytes ($B600-$B60F, $B610-$B61F... $B7F0-$B7FF). This type of erase opera-
tion saves time compared to byte erase when large sections of EEPROM are to be
erased.
* On entry, A = data to be programmed and X = EEPROM address
PROG
LDAB
#$02
STAB
$103B
Set EELAT Bit (EEPGM = 0)
STAA
0,X
Store Data to EEPROM Address
LDAB
#$03
STAB
$103B
Set EEPGM Bit (EELAT = 1)
JSR
DLY10
Delay 10 ms
CLR
$103B
Turn Off High Voltage and Set to READ
Mode
BULKE
LDAB
#$06
STAB
$103B
Set to Bulk Erase Mode
STAB
$B600
Write any Data to any EEPROM Address
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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