Contents; Introduction; Features; Mc68Hc908Ab32 - Rev - Motorola MC68HC908AB32 Technical Data Manual

Hcmos microcontroller unit
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Technical Data - MC68HC908AB32

21.1 Contents

21.2 Introduction

21.3 Features

MC68HC908AB32
Rev. 1.0
-
MOTOROLA

Section 21. Low-Voltage Inhibit (LVI)

21.2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
21.3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
21.4
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360
21.4.1
Polled LVI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
21.4.2
Forced Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
21.4.3
False Reset Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 361
21.5
LVI Status Register (LVISR) . . . . . . . . . . . . . . . . . . . . . . . . . . 362
21.6
LVI Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
21.7
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
21.7.1
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
21.7.2
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 363
This section describes the low-voltage inhibit module, which monitors
the voltage on the V
falls to the LVI trip voltage.
Features of the LVI module include the following:
Programmable LVI reset
Programmable LVI module power
Programmable stop mode operation
Low-Voltage Inhibit (LVI)
pin and can force a reset when the V
DD
voltage
DD
Technical Data
359

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