MC68HC908GP32 Datasheet, PDF (191/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Freescale Semiconductor, Inc.
Technical Data – MC68HC908GP32•MC68HC08GP32
Section 14. Low-Voltage Inhibit (LVI)
14.1 Contents
14.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
14.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
14.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
14.4.1 Polled LVI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
14.4.2 Forced Reset Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
14.4.3 Voltage Hysteresis Protection . . . . . . . . . . . . . . . . . . . . . . 192
14.4.4 LVI Trip Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
14.5 LVI Status Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
14.6 LVI Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
14.7 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194
14.7.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
14.7.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
14.2 Introduction
This section describes the low-voltage inhibit (LVI) module, which
monitors the voltage on the V_DD pin and can force a reset when the V_DD
voltage falls below the LVI trip falling voltage, V_TRIPF.
14.3 Features
Features of the LVI module include:
• Programmable LVI reset
• Selectable LVI trip voltage
• Programmable stop mode operation
MC68HC908GP32•MC68HC08GP32 — Rev. 6
MOTOROLA
Low-Voltage Inhibit (LVI)
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Go to: www.freescale.com
Technical Data
189