NXP Semiconductors MC908LK24CFUE

Overview

MC908LK24CFUE from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 24 KB on-chip Flash, 1 KB RAM, integrated RTC, LCD driver (up to 32 segments), and IRSCI interface. It operates at up to 8 MHz bus frequency, supports low-power Stop/Wait modes, and targets embedded control in battery-powered instrumentation and industrial HMI.

For engineers reviewing the MC908LK24CFUE datasheet, MC908LK24CFUE pinout, MC908LK24CFUE application, or MC908LK24CFUE equivalent, this page provides verified technical context, package mapping, real-time clock capabilities, LCD segment drive configuration, and validated alternative options for migration or second sourcing.

Technical Context

The MC908LK24CFUE integrates a HCS08 CPU core with 8 MHz maximum bus speed, a programmable PLL-based Clock Generator Module (CGM), and dual timer modules supporting input capture, output compare, and PWM generation. Its System Integration Module (SIM) manages reset sources including POR, LVI, COP, and external RST.

It features a dedicated Real-Time Clock (RTC) with calendar, alarm, chronograph, and calibration registers, plus an Infrared Serial Communications Interface (IRSCI) combining SCI UART functionality with infrared encoding/decoding logic - all operating from a single 3.3 V or 5 V supply.

Key Specifications

Pinout & Package

MC908LK24CFUE is housed in a 64-pin QFP (Quad Flat Package) with 0.5 mm pitch, compliant with JEDEC MO-140. The package supports surface-mount assembly and thermal dissipation suitable for industrial ambient temperatures (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MC908LK24CFUE, MC908LJ24CFUE removes RTC and LCD functions while retaining identical packaging and core peripherals, whereas S08LL16CLC offers modernized process and ESD performance but omits the exact feature set required for time-aware LCD applications.

Availability

MC908LK24CFUE is available at Aetrix Electronics and suitable for energy metering displays, industrial panel controllers, portable medical instruments, and smart thermostat interfaces requiring stable component supply and long-lifecycle support.

Supply support for MC908LK24CFUE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's microcontroller heritage.

The MC908LK24CFUE belongs to the HCS08 family, designed specifically for cost-sensitive, low-power embedded control applications requiring integrated timing, human-machine interface, and mixed-signal peripherals.

FAQ

What is the maximum operating frequency of the MC908LK24CFUE?

The MC908LK24CFUE supports a maximum bus frequency of 8 MHz, achieved via its internal PLL-based Clock Generator Module (CGM). This allows deterministic instruction execution at up to 8 million bus cycles per second, sufficient for real-time control tasks in metering and HMI applications without external clock synthesis.

Does the MC908LK24CFUE include a hardware real-time clock?

Yes, the MC908LK24CFUE integrates a full-featured Real-Time Clock (RTC) module with calendar (year/month/day/hour/min/sec), alarm, chronograph, and calibration registers. It operates independently in Stop mode using the 32.768 kHz crystal input and maintains time accuracy within ±127 ppm after calibration.

Can the MC908LK24CFUE drive an LCD display directly?

Yes, the MC908LK24CFUE includes a built-in LCD driver supporting up to 32 segments and 4 commons. It generates VLCD bias internally and supports static, 2-bias, 3-bias, and 4-bias multiplexing - enabling direct connection to common character or segment-based LCDs without external driver ICs.

What communication interfaces are available on the MC908LK24CFUE?

The MC908LK24CFUE provides an Infrared Serial Communications Interface (IRSCI) combining standard SCI UART functionality with integrated infrared encoding/decoding logic. It also supports SPI and I²C (MMIIC) for peripheral expansion, plus TIM channels for pulse-based protocols.

Is the MC908LK24CFUE still in active production?

The MC908LK24CFUE is a mature product in NXP's portfolio with confirmed long-term availability through authorized distribution channels. Aetrix Electronics maintains strategic inventory and lifecycle coordination to support ongoing production requirements for industrial and metering customers.