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參數(shù)資料
| 型號(hào)： | MC68HC05E6FB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁(yè)數(shù)： | 65/140頁(yè) |
| 文件大?。?/td> | 1584K |
| 代理商： | MC68HC05E6FB |
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Memory and Registers
MC68HC05E6 — Rev. 1.0
Memory and Registers
There are three possibilities for erasing data from the EEPROM array,
depending on the amount of data to be affected.
To erase a byte of EEPROM, set EELATCH = CPEN = 1, set ER1
= 0 and ER0 = 1, write data to the desired address and then set
To erase a block of EEPROM, set EELATCH = CPEN = 1, set ER1
= 1 and ER0 = 0, write data to any address in the block and then
To bulk erase the EEPROM, set EELATCH = CPEN = 1, set ER1
= ER0 = 1, write data to any address in the array and then set
To terminate the programming or erase sequence, clear EEPGM, wait
for a time tFPV to allow the programming voltage to fall, and then clear
EELATCH and CPEN to release the buses (see Table 23). Following
each erase or programming sequence, clear all programming control
bits.
Example program
The following program is an example of the EEPROM programming
sequence using the timer to implement the required delay and assuming
a 1 MHz bus frequency.
TCSR
EQU
$0008
TIMER CONTROL AND STATUS
REGISTER
TCNT
EQU
$0009
TIMER COUNTER REGISTER
TOF
EQU
7
TOF BIT OF TCSR
PROG
EQU
$001C
EEPROM PROGRAM REGISTER
CPEN
EQU
6
CHARGE PUMP ENABLE BIT
ER1
EQU
4
ERASE SELECT BIT 1
ER0
EQU
3
ERASE SELECT BIT 0
EELATCH
EQU
2
LATCH BIT
EERC
EQU
1
RC/OSC SELECTOR BIT
EEPGM
EQU
0
EEPROM PROGRAM BIT
EESTART
EQU
$0100
STARTING ADDRESS OF EEPROM
SUMPIN
EQU
$FF
DUMMY DATA
ORG
$1000
START
EQU
*
BSET
EERC, PROG
SELECT RC OSCILLATOR
BSR
DELAY
RC OSCILLATOR STABILIZATION
BSET
CPEN, PROG
TURN ON CHARGE PUMP
BSET
EELATCH, PROG
ENABLE LATCH BIT
6-mem
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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PDF描述 |
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| MC68HC705E6VFB | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05E6CFB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05E6CDW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC05E6MFB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05E6VDWR2 | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05E6MDW | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05E6MFB | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05E6VDW | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05E6VFB | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05F32 | 制造商:FREESCALE 制造商全稱(chēng):Freescale Semiconductor, Inc 功能描述:a member of the M68HC05 family of HCMOS |
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