mc68hc705v12 Freescale Semiconductor, Inc, mc68hc705v12 Datasheet - Page 67

• Manufacturer Part Number: mc68hc705v12
• Description: M68hc05-based Mcu Hc05 Freescale Semiconductor
• Manufacturer: Freescale Semiconductor, Inc

5.1 Contents
5.2 Introduction
MC68HC705V12
Advance Information — MC68HC705V12
—
Rev. 3.0
5.2
5.3
5.4
5.4.1
5.4.2
5.4.2.1
5.4.2.2
5.4.2.3
5.4.2.4
5.4.2.5
5.4.3
5.4.4
5.4.5
5.4.6
The MCU can be reset from six sources:
The RESET pin is an input with a Schmitt trigger as shown in
All the internal peripheral modules will be reset by the internal reset
signal (RST). Refer to
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One external input
Five internal restart conditions
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
External Reset (RESET). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Internal Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Power-On Reset (POR). . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Computer Operating Properly Reset (COPR) . . . . . . . . . . .71
Illegal Address Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Disabled STOP Instruction Reset . . . . . . . . . . . . . . . . . . . .73
Low-Voltage Reset (LVR) . . . . . . . . . . . . . . . . . . . . . . . . . .73
LVR Operation in Stop and Wait Modes . . . . . . . . . . . . . . .74
Resetting the COP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
COP during Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . .71
COP during Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . .71
COP Watchdog Timer Considerations . . . . . . . . . . . . . . .72
COP Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
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Resets
Figure 5-2
for reset timing details.
Section 5. Resets
Advance Information
Figure
5-1.