參數(shù)資料
型號: MC68HC11A8BCFN2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Single-Chip Microcontroller
中文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC52
封裝: PLASTIC, LCC-52
文件頁數(shù): 34/158頁
文件大小: 776K
代理商: MC68HC11A8BCFN2
MOTOROLA
3-8
ON-CHIP MEMORY
MC68HC11A8
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
STAB
STAB
LDAB
STAB
JSR
CLR
#$06
$103B
$B600
#$07
$103B
DLY10
$103B
Set to Bulk Erase Mode
Write any Data to any EEPROM Address
Turn On Programming Voltage
Delay 10 ms
Turn Off High Voltage and Set to READ
Mode
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