XC68HC05P18A Motorola, XC68HC05P18A Datasheet - Page 45
XC68HC05P18A
Manufacturer Part Number
XC68HC05P18A
Description
HCMOS Microcontroller Unit
Manufacturer
Motorola
Datasheet
1.XC68HC05P18A.pdf
(130 pages)
- Current page: 45 of 130
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Technical Data — MC68HC05P18A
5.1 Contents
5.2 Introduction
MC68HC05P18A
MOTOROLA
5.2
5.3
5.4
5.4.1
5.4.2
5.4.3
The MCU can be reset from four sources:
The RESET pin is an input with a Schmitt trigger as shown in
Figure
reset signal (RST), which is the logical OR of internal reset functions and
is clocked by PH2.
•
•
One external input
Three internal reset conditions
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
External Reset (RESET). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Internal Resets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
5-1. The CPU and all peripheral modules are reset by the internal
Power-On Reset (POR) . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Computer Operating Properly (COP) Reset . . . . . . . . . . . . .47
Low-Voltage Reset (LVR). . . . . . . . . . . . . . . . . . . . . . . . . . .48
Resets
Section 5. Resets
Technical Data
45
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