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| 型號： | MC68HC05K3 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 中文描述： | 8位微控制器單元（MCU）。（8位微控制器） |
| 文件頁數(shù)： | 1/56頁 |
| 文件大?。?/td> | 311K |
| 代理商： | MC68HC05K3 |
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Motorola, Inc., 1996
AN1288
Order this document
by AN1288/D
Motorola Semiconductor Application Note
AN1288
Programming the MC68HC(8)05K3’s Personality EEPROM
on the MMDS and MMEVS
By Derrick B. Forte
CSIC Development Tools
Austin, Texas
Introduction
The Motorola MMDS and MMEVS development systems give
embedded systems developers the ability to emulate members of the
M68HC05 Family of microcontroller units. The MMDS/MMEVS host
software command set provides users with read and write access to an
emulated MCU’s on-chip registers and peripherals. The design of some
HC05 peripherals, however, precludes their being directly accessed by
the MMDS/MMEVS. An example of such a peripheral is the personality
EEPROM (PEEPROM) found on MC68HC(8)05K3 microcontrollers.
The PEEPROM consists of 128 bits of EEPROM memory arranged in an
array of 16 rows x 8 columns. The PEEPROM’s bits can be accessed
only serially, one bit at a time, by software stored in on-chip user
nonvolatile memory. An on-chip charge pump provides the voltage
necessary to program or erase the PEEPROM as long as the MCU’s
supply voltage is 3 volts or higher. The PEEPROM can be used to store
application data and variables. Possible uses for the PEEPROM include
storage of codes for digital lock and key applications or seed values
used in the implementation of random number algorithms.
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相關代理商/技術參數(shù) |
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|---|---|
| MC68HC05K3CDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05K3CP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05K3CSD | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05K3DW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05K3P | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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