MC68HC08AB16A Datasheet, PDF (351/380 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC08AB16A
Section 21. Low-Voltage Inhibit (LVI)
21.1 Contents
21.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
21.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
21.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
21.4.1 Polled LVI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
21.4.2 Forced Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
21.4.3 False Reset Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
21.5 LVI Status Register (LVISR) . . . . . . . . . . . . . . . . . . . . . . . . . . 354
21.6 LVI Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
21.7 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
21.7.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
21.7.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 355
21.2 Introduction
This section describes the low-voltage inhibit module, 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.
21.3 Features
Features of the LVI module include the following:
• Programmable LVI reset
• Programmable LVI module power
• Programmable stop mode operation
MC68HC08AB16A — Rev. 2.0
MOTOROLA
Low-Voltage Inhibit (LVI)
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Technical Data
351