MC68HC05K1 FREESCALE [Freescale Semiconductor, Inc], MC68HC05K1 Datasheet - Page 53

• Manufacturer Part Number: MC68HC05K1
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

5.1 Contents
5.2 Introduction
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
Technical Data — MC68HC05K0 • MC68HC05K1
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.4
5.4.1
5.4.2
5.4.3
5.4.4
This section describes the five reset sources and how they initialize the
microcontroller unit (MCU).
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Reset Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Reset States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
External Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Computer Operating Properly (COP) Reset . . . . . . . . . . . . .56
Illegal Address Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Low-Voltage Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
I/O Port Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
COP Watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
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Resets
Section 5. Resets
Technical Data