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參數(shù)資料
| 型號： | MC912DT128CVPV |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| 中文描述： | 16-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP112 |
| 封裝： | TQFP-112 |
| 文件頁數(shù)： | 145/478頁 |
| 文件大?。?/td> | 2453K |
| 代理商： | MC912DT128CVPV |
Resets and Interrupts
Effects of Reset
MC68HC912DT128A — Rev 4.0
Technical Data
MOTOROLA
Resets and Interrupts
145
software failing to execute the sequence properly causes a COP reset to
occur. In addition, windowed COP operation can be selected. In this
mode, a write to the COPRST register must occur in the last 25% of the
selected period. A premature write will also reset the part.
10.8.4 Clock Monitor Reset
If clock frequency falls below a predetermined limit when the clock
monitor is enabled, a reset occurs.
10.9 Effects of Reset
When a reset occurs, MCU registers and control bits are changed to
known start-up states, as follows.
10.9.1 Operating Mode and Memory Map
Operating mode and default memory mapping are determined by the
states of the BKGD, MODA, and MODB pins during reset. The SMODN,
MODA, and MODB bits in the MODE register reflect the status of the
mode-select inputs at the rising edge of reset. Operating mode and
default maps can subsequently be changed according to strictly defined
rules.
10.9.2 Clock and Watchdog Control Logic
The COP watchdog system is enabled, with the CR[2:0] bits set for the
longest duration time-out. The clock monitor is disabled. The RTIF flag
is cleared and automatic hardware interrupts are masked. The rate
control bits are cleared, and must be initialized before the RTI system is
used. The DLY control bit is set to specify an oscillator start-up delay
upon recovery from STOP mode.
相關(guān)PDF資料 |
PDF描述 |
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| MC912DT128PCPV | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC912DT128PMPV | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC912DT128PVPV | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC68HC912DT128C | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC68HC912DT128P | The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC912DT128PCPV | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC912DT128PMPV | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC912DT128PVPV | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit |
| MC912G | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC912XDP512F0CAAR | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCS12X Microcontrollers |
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