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| 型號(hào)： | 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(jí)的8位微控制器單元) |
| 中文描述： | 28引腳單片機(jī)（微控制器）的基礎(chǔ)上MC68HC05P4（28引腳，基于MC68HC05P4升級(jí)的8位微控制器單元） |
| 文件頁(yè)數(shù)： | 47/102頁(yè) |
| 文件大?。?/td> | 930K |
| 代理商： | MC68HC05P4A |
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MC68HC05P4A — Rev. 6.0
Advance Information
MOTOROLA
Low-Power Modes
47
Advance Information — MC68HC05P4A
Section 6. Low-Power Modes
6.1 Contents
6.2
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
6.3
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
6.4
WAIT Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
6.2 Introduction
The MC68HC05P4A is capable of running in a low-power mode in each
of its configurations. The WAIT and STOP instructions provide two
modes that reduce the power required for the MCU by stopping various
internal clocks and/or the on-chip oscillator. The STOP and WAIT
instructions are not normally used if the computer operating properly
(COP) watchdog timer is enabled. The flow of the stop and wait modes
is shown in
Figure 6-1
.
6.3 Stop Mode
Execution of the STOP instruction places the MCU in its lowest power
consumption mode. In stop mode, the internal oscillator is turned off,
halting
all
internal processing, including the COP watchdog timer.
Execution of the STOP instruction automatically clears the I bit in the
condition code register so that the IRQ external interrupt is enabled. All
other registers and memory remain unaltered. All input/output lines
remain unchanged.
The MCU can be brought out of stop mode only by an IRQ external
interrupt or an externally generated RESET. When exiting the stop
mode, the internal oscillator will resume after a 4064 PH2 clock cycle
oscillator stabilization delay.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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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