MC68HC908GR4 MOTOROLA [Motorola, Inc], MC68HC908GR4 Datasheet - Page 61

• Manufacturer Part Number: MC68HC908GR4
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Technical Data — MC68HC908GR8
4.1 Contents
4.2 Introduction
4.3 Resets
4.3.1 Effects
MC68HC908GR8 — Rev 4.0
MOTOROLA
4.2
4.3
4.4
Resets and interrupts are responses to exceptional events during
program execution. A reset re-initializes the MCU to its startup condition.
An interrupt vectors the program counter to a service routine.
A reset immediately returns the MCU to a known startup condition and
begins program execution from a user-defined memory location.
A reset:
Freescale Semiconductor, Inc.
•
•
•
•
For More Information On This Product,
Immediately stops the operation of the instruction being executed
Initializes certain control and status bits
Loads the program counter with a user-defined reset vector
address from locations $FFFE and $FFFF
Selects CGMXCLK divided by four as the bus clock
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Resets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Go to: www.freescale.com
Resets and Interrupts
Section 4. Resets and Interrupts
Technical Data
61