Freescale Semiconductor, Inc.
Advance Information — MC68HC908RFRK2
Section 12. Low-Voltage Inhibit (LVI)
12.1 Contents
12.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167
12.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
12.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
12.4.1 False Trip Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
12.4.2 Short Stop Recovery Option. . . . . . . . . . . . . . . . . . . . . . . .169
12.5 LVI Status Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
12.6 LVI Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
12.7 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
12.7.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171
12.7.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171
12.2 Introduction
The low-voltage inhibit (LVI) module monitors the voltage on the V pin
DD
and will set a low voltage sense bit when V voltage falls to the LVI
DD
sense voltage. The LVI will force a reset when the V voltage falls to
DD
the LVI trip voltage.
MC68HC908RFRK2
MOTOROLA
Advance Information
Low-Voltage Inhibit (LVI)
169
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