MC68HC08AS20 Datasheet, PDF (141/386 Pages) Freescale Semiconductor, Inc – M68HC08 Microcontrollers

Advance Information — MC68HC08AS20
Section 10. Low-Voltage Inhibit (LVI)
10.1 Contents
10.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
10.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
10.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
10.4.1 Polled LVI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
10.4.2 Forced Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 143
10.5 LVI Status Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
10.6 LVI Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .144
10.7 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
10.7.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
10.7.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
10.2 Introduction
This section describes the low-voltage inhibit module (LVI), which
monitors the voltage on the V_DD pin and can force a reset when the V_DD
voltage falls to the LVI trip voltage.
10.3 Features
Features of the LVI module include:
• Programmable LVI Reset
• Programmable Power Consumption
MC68HC08AS20 — Rev. 4.1
Freescale Semiconductor
Advance Information
141