NXP Semiconductors MC9S08LG32CLK

Overview

MC9S08LG32CLK from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB flash, 1984-byte RAM, and integrated LCD driver supporting up to 8×37 segments. It operates from 2.7 V to 5.5 V across –40 °C to 105 °C, features dual TPM modules (2+6 channels), 12-bit ADC with temperature sensor, and I²C/SPI/SCI interfaces. It targets automotive instrument clusters and industrial panel meters requiring low-power, high-integration timing and display control.

For engineers reviewing the MC9S08LG32CLK datasheet, MC9S08LG32CLK pinout, MC9S08LG32CLK application, or MC9S08LG32CLK equivalent, this page delivers verified electrical specs, package mapping to 80-pin LQFP (Case 917A), functional pin roles, real-world use scenarios for LCD-driven systems, and two validated alternative parts with documented technical and application differences.

Technical Context

The MC9S08LG32CLK implements the HCS08 CPU core with BGND instruction support and handles up to 32 interrupt/reset sources. Its clock system integrates both an external crystal oscillator (XOSC, 31.25 kHz–16 MHz) and an internal clock source (ICS) with FLL and 0.2% trimming resolution - enabling bus frequencies from 1 MHz to 20 MHz with <2% deviation over voltage and temperature.

Power management includes Stop2/Stop3 low-power modes, peripheral clock gating, and a dedicated low-power on-chip crystal oscillator for RTC and LCD operation during deep sleep. The device supports wakeup from Stop3 in ≤100 µs and includes COP reset, low-voltage detection, illegal opcode/address protection, and flash/RAM security circuitry.

Key Specifications

Pinout & Package

MC9S08LG32CLK is packaged in 80-pin LQFP (Case 917A, 14 mm × 14 mm), with all pins assigned per Rev. 9 datasheet Figure 2 and Table 2. Pin functions include primary port I/O, alternate peripheral roles (e.g., TPM, SCI, I²C, ADC), and dedicated power/ground/oscillator connections. VREFH/VREFL are internally tied to VDDA/VSSA.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with S9KEAZN64ACLH and MC9S08LC32CLK, the MC9S08LG32CLK uniquely balances mature 8-bit efficiency, integrated LCD drive, and automotive-grade reliability - making it optimal for cost-sensitive, display-centric embedded systems where ARM overhead is unnecessary.

Availability

MC9S08LG32CLK is available at Aetrix Electronics and suitable for automotive instrument clusters, industrial panel meters, smart appliance controls, and medical diagnostic displays requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for MC9S08LG32CLK 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 applications, with roots in Freescale's embedded microcontroller heritage.

The MC9S08LG32CLK belongs to the HCS08 family - designed specifically for cost-effective, low-power, high-integration applications demanding LCD driving, analog sensing, and robust real-time control in harsh environments.

FAQ

What is the maximum operating frequency of the MC9S08LG32CLK CPU core?

The MC9S08LG32CLK CPU core runs at up to 40 MHz when supplied at 5.5 V within the –40 °C to +105 °C temperature range. Bus frequency is derived from the internal clock source (ICS) or external oscillator (XOSC), supporting configurable rates from 1 MHz to 20 MHz depending on system configuration and voltage conditions. This allows deterministic real-time response while maintaining compatibility with legacy 8-bit toolchains and peripherals.

Does the MC9S08LG32CLK support LCD operation in low-power modes?

Yes, the MC9S08LG32CLK supports full LCD operation in Stop3 mode using its low-power on-chip crystal oscillator (XOSC). This enables continuous segment driving and refresh without waking the CPU, achieving µA-level system current while maintaining display visibility. The internal charge pump eliminates need for external bias supplies, simplifying design for battery-powered or energy-conscious applications.

What debug interface does the MC9S08LG32CLK provide?

The MC9S08LG32CLK features a single-wire background debug (BKGD) interface on PTC5, supporting in-circuit debugging with one hardware breakpoint and two additional breakpoints via the on-chip debug module. It integrates an eight-deep FIFO and nine trigger modes for change-of-flow tracing, enabling efficient firmware validation without requiring JTAG headers or complex probe setups.

Is the MC9S08LG32CLK qualified for automotive applications?

Yes, the MC9S08LG32CLK is AEC-Q100 qualified for Grade 2 (–40 °C to +105 °C) operation and features ESD protection rated at 2500 V HBM and 750 V CDM. Its built-in COP watchdog, low-voltage detection/reset, illegal opcode/address protection, and flash security circuitry meet functional safety requirements for non-safety-critical automotive subsystems such as instrument clusters and body control modules.

How many ADC channels does the MC9S08LG32CLK support, and what is their resolution?

The MC9S08LG32CLK supports 16-channel, 12-bit successive-approximation ADC with 2.5 µs conversion time, internal bandgap reference, and automatic compare function. It includes a dedicated temperature sensor channel and operates fully from 2.7 V to 5.5 V - including during Stop3 mode, where it can wake the system upon threshold crossing, enabling intelligent power-aware sensing.