NXP MC68HC908QT1CDW

HC088MHz1.5KB（1.5K x 8）

Overview

The MC68HC908 MCU is a member of the low-cost, high-performance M68HC08 Family of 8-bit microcontroller units (MCUs). Optimized for low-power operation and available in a small 32-pin low-profile quad flat pack (LQFP), this MCU is well-suited for remote keyless entry (RKE) transmitter designs. All MCUs in the family use the enhanced M68HC08 central processor unit (CPU08) and are available with a variety of modules, memory sizes and types, and package types.

• Third party C language support

Features

high-performance m68hc08 CPU core

fully upward-compaN/Able object code with m68hc05 family

5-v and 3-v operaN/Ang voltages (vdd)

8-mhz internal bus operaN/Aon at 5 v, 4-mhz at 3 v

trimmable internal oscillator

– 3.2 mhz internal bus operaN/Aon

– 8-bit trim capability

– ± 25% untrimmed

– ± 5% trimmed

auto wake-up from stop capability

configuraN/Aon (config) register for mcu configuraN/Aon opN/Aons, including:

– low-voltage inhibit (lvi) trip point

in-system flash programming

flash security(1)

on-chip in-applicaN/Aon programmable flash memory (with

internal program/erase voltage generaN/Aon)

– mc68hc908qy4 and mc68hc908qt4 —4096 bytes

– mc68hc908qy2, mc68hc908qy1, mc68hc908qt2, and mc68hc908qt1 —1536 bytes

128 bytes of on-chip random-access memory (ram)

2-channel, 16-bit N/Amer interface module (N/Am)

4-channel, 8-bit analog-to-digital converter (adc) on mc68hc908qy2, mc68hc908qy4, mc68hc908qt2, and mc68hc908qt4

5 or 13 bidirecN/Aonal input/output (i/o) lines and one input only:

– six shared with keyboard interrupt funcN/Aon and adc

– two shared with N/Amer channels

– one shared with external interrupt (irq)

– eight extra i/o lines on 16-pin package only

– high current sink/source capability on all port pins

– selectable pullups on all ports, selectable on an individual bit basis

– three-state ability on all port pins

6-bit keyboard interrupt with wakeup feature (kbi)

Applications

• Portable Devices

• Test & Measurement

• Input-Output operations

• Control applications

• Analog data processing