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MC68HC05K3CDW Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc

Part # MC68HC05K3CDW
Description  HCMOS Microcontroller Unit
Download  132 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HC05K3CDW Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc

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Technical Data
MC68HC05K3 — Revision 4.0
6
Table of Contents
MOTOROLA
Table of Contents
Section 3. Central Processor Unit (CPU) Core
3.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
3.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
3.3
Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
3.3.1
Stack Pointer (SP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
3.3.2
Program Counter (PC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Section 4. Interrupts
4.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
4.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
4.3
Central Processor Unit (CPU) Interrupt Processing . . . . . . . . .40
4.4
Reset Interrupt Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
4.5
Software Interrupt (SWI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
4.6
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
4.6.1
External Interrupt (IRQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
4.6.2
IRQ Status/Control Register . . . . . . . . . . . . . . . . . . . . . . . . .45
4.6.3
Port A Interrupts (PA0–PA3) . . . . . . . . . . . . . . . . . . . . . . . .46
4.6.4
Timer Interrupt (TIMER) . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Section 5. Resets
5.1
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
5.3
External Reset (RESET). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.4
Internal Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.4.1
Power-On Reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
5.4.2
Computer Operating Properly Reset (COPR) . . . . . . . . . . .51
5.4.3
Illegal Address Reset (ILADR) . . . . . . . . . . . . . . . . . . . . . . .51


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