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參數資料
| 型號： | MC68HC05P4A |
| 廠商： | Motorola, Inc. |
| 英文描述： | 28-pin MCU (microcontroller unit) based on the MC68HC05P4(28引腳、基于MC68HC05P4升級的8位微控制器單元) |
| 中文描述： | 28引腳單片機（微控制器）的基礎上MC68HC05P4（28引腳，基于MC68HC05P4升級的8位微控制器單元） |
| 文件頁數： | 30/102頁 |
| 文件大小： | 930K |
| 代理商： | MC68HC05P4A |
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Advance Information
MC68HC05P4A — Rev. 6.0
30
Memory Map
MOTOROLA
Memory Map
2.3 ROM
The user ROM consists of 48 bytes of page zero ROM from $0020 to
$004F, 4096 bytes of ROM from $0100 to $10FF, and 16 bytes of user
vectors from $1FF0 to $1FFF. The self-check ROM and vectors are
located from $1F00 to $1FEF.
2.4 ROM Security Feature
A security feature
1
has been incorporated into the MC68HC05P4A to
help prevent external reading of code in the ROM. Placing unique
customer code at ROM locations $0028–$002F aids in keeping
customer developed software proprietary.
2.5 RAM
The user RAM consists of 176 bytes of a shared stack area. The stack
beginsat address$00FF. Thestack pointercanaccess 64bytes of RAM
in the range $00FF to $00C0.
NOTE:
Using the stack area for data storage or temporary work locations
requires care to prevent it from being overwritten due to stacking from an
interrupt or subroutine call.
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the ROM difficult for unauthorized users.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68HC05P4DW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P4P | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P6 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P6_1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P8 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
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