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HC705RC17GRS/D Datasheet(PDF) 45 Page - NXP Semiconductors

Part # HC705RC17GRS/D
Description  The MC68HC705RC17 is a general-purpose, low-cost addition to the M68HC05 Family of microcontroller units (MCUs) and is suitable for remote control applications.
PDF  126 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

HC705RC17GRS/D Datasheet(HTML) 45 Page - NXP Semiconductors

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MC68HC705RC17 — Rev. 2.0
General Release Specification
Resets
General Release Specification — MC68HC705RC17
Section 5. Resets
5.1 Contents
5.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
5.3
External Reset (RESET). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
5.4
Low-Power External Reset (LPRST) . . . . . . . . . . . . . . . . . . . .48
5.5
Internal Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.5.1
Power-On Reset (POR). . . . . . . . . . . . . . . . . . . . . . . . . . . .48
5.5.2
Computer Operating Properly Reset (COPR) . . . . . . . . . . .49
5.5.2.1
Resetting the COP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.5.2.2
COP During Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.5.2.3
COP During Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.5.2.4
COP Watchdog Timer Considerations . . . . . . . . . . . . . . .50
5.5.3
Illegal Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.2 Introduction
The MCU can be reset from five sources: two external inputs and three
internal restart conditions. The RESET and LPRST pins are inputs as
shown in Figure 5-1. All the internal peripheral modules will be reset by
the internal reset signal (RST). Refer to Figure 5-2 for reset timing detail.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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