HC05RC16GRSSLASHD datasheet(25/122 Pages) NXP

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General Description

Signal Description

MC68HC05RC16 — Rev. 3.0

General Release Specification

General Description

1.5.4 RESET

This active-low pin is used to reset the MCU to a known startup state by

pulling RESET low. The RESET pin contains an internal Schmitt trigger

as part of its input to improve noise immunity. See Section 5. Resets.

1.5.5 LPRST

The LPRST pin is an active-low pin and is used to put the MCU into

low-power reset mode. In low-power reset mode the MCU is held in reset

with all processor clocks halted. See Section 5. Resets.

1.5.6 IRO

The IRO pin is the high-current source and sink output of the carrier

modulator transmitter subsystem which is suitable for driving infrared

(IR) LED biasing logic. See Section 9. Carrier Modulator Transmitter

(CMT).

1.5.7 PA0–PA7

These eight I/O lines comprise port A. The state of any pin is software

programmable and all port A lines are configured as inputs during

power-on or reset. For detailed information on I/O programming, see 2.4

Input/Output Programming.

1.5.8 PB0–PB7

These eight I/O lines comprise port B. The state of any pin is software

programmable and all port B lines are configured as inputs during

power-on or reset. Each port B I/O line has a mask optionable

pullup/interrupt for keyscan. For detailed information on I/O

programming, see 2.4 Input/Output Programming.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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