MC68HC705C8ACS

Manufacturer Part NumberMC68HC705C8ACS
ManufacturerFreescale Semiconductor, Inc
MC68HC705C8ACS datasheet
 


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Freescale Semiconductor, Inc.
Technical Data — MC68HC705C8A
5.1 Contents
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.3.1
5.3.3.2
5.3.4
5.2 Introduction
This section describes how resets initialize the microcontroller unit
(MCU).
5.3 Reset Sources
A reset immediately stops the operation of the instruction being
executed, initializes certain control bits, and loads the program counter
with a user-defined reset vector address. These conditions produce a
reset:
MC68HC705C8A — Rev. 3
MOTOROLA
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Reset Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Power-On Reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
External Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Programmable and Non-Programmable
COP Watchdog Resets . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Programmable COP Watchdog Reset . . . . . . . . . . . . . . .63
Non-Programmable COP Watchdog . . . . . . . . . . . . . . . . 66
Clock Monitor Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Power-on reset (POR) — Initial power-up
External reset — A logic 0 applied to the RESET pin
Internal programmable computer operating properly (COP)
watchdog timer reset
Internal non-programmable COP watchdog timer reset
Internal clock monitor reset
Resets
Go to: www.freescale.com
Section 5. Resets
Technical Data