MC68HC705V12CFN MOTOROLA [Motorola, Inc], MC68HC705V12CFN Datasheet - Page 67

• Manufacturer Part Number: MC68HC705V12CFN
• Description: The Motorola microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

5.1 Contents
5.2 Introduction
MC68HC705V12
MOTOROLA
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
•
•
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
Resets
Figure 5-2
for reset timing details.
Section 5. Resets
Advance Information
Figure
5-1.
67