mc68hc705j1avs Freescale Semiconductor, Inc, mc68hc705j1avs Datasheet - Page 69
mc68hc705j1avs
Manufacturer Part Number
mc68hc705j1avs
Description
M68hc05 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC705J1AVS.pdf
(162 pages)
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4.1 Contents
4.2 Introduction
MC68HC705J1A — Rev. 4.0
Technical Data — MC68HC705J1A
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.4
4.4.1
4.4.2
4.4.3
4.4.3.1
4.4.3.2
4.4.4
Reset initializes the microcontroller unit (MCU) by returning the program
counter to a known address and by forcing control and status bits to
known states.
Interrupts temporarily change the sequence of program execution to
respond to events that occur during processing.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Resets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
External Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
COP Watchdog Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Illegal Address Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Software Interrupt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
External Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Timer Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Interrupt Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Real-Time Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Timer Overflow Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . 76
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Resets and Interrupts
Section 4. Resets and Interrupts
Technical Data
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