NXP Semiconductors MC9S08LH64CLH

Overview

MC9S08LH64CLH from NXP Semiconductors (formerly Freescale) is an automotive-grade 8-bit HCS08 microcontroller with 64 KB flash, 4 KB RAM, integrated LCD driver (8×36/4×40), 16-bit ADC, dual TPM modules, I²C, SPI, two SCI interfaces, analog comparator, and time-of-day module - designed for instrument cluster, body control, and HVAC applications in vehicles operating from –40 °C to +85 °C.

For engineers reviewing the MC9S08LH64CLH datasheet, MC9S08LH64CLH pinout, MC9S08LH64CLH application, or MC9S08LH64CLH equivalent, key selection criteria include its 64-pin LQFP package, 1.8–3.6 V operation, stop3 mode wakeup in 6 μs, trimmable 1.15 V VREFO2 reference, and AEC-Q100 qualified peripheral set supporting low-power automotive sensing and display control.

Technical Context

The MC9S08LH64CLH implements the HCS08 CPU core with BGND instruction support and handles up to 32 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with precision-trimmed internal reference (±0.2% resolution, ±2% deviation over voltage/temperature), enabling bus frequencies from 1 MHz to 20 MHz.

Power management includes two low-power stop modes, reduced-power wait, and peripheral clock gating; the very low-power external oscillator supports accurate time-of-day operation in stop2/stop3. The ADC delivers 16-bit resolution with hardware averaging, temperature sensor, and full functionality down to 1.8 V - including operation in stop3 mode.

Key Specifications

Pinout & Package

MC9S08LH64CLH is housed in a 64-pin LQFP (10 mm × 10 mm, Case 840F) with exposed pad thermal enhancement. Pin functions are multiplexed across GPIO, peripherals, and power domains - including dedicated VREFO2 output, VCAP1/VCAP2 for internal regulator stability, and VLCD/VLLx pins for LCD bias generation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08LH64F2MLH, MC9S08LH64CLH offers lower-cost qualification for cabin applications; compared with MC9S08LC60CLH, it adds full LCD support, TOD, and enhanced analog/peripheral integration - making it optimal for display-centric automotive modules.

Availability

MC9S08LH64CLH is available at Aetrix Electronics and suitable for automotive instrument clusters, body control modules, and HVAC control panels requiring stable component supply across extended production lifecycles.

Supply support for MC9S08LH64CLH 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 - formed through the acquisition of Freescale Semiconductor in 2015.

The MC9S08LH64CLH belongs to the legacy HCS08 automotive microcontroller family, engineered specifically for cost-sensitive, low-power, display-integrated vehicle subsystems requiring AEC-Q100 compliance and long-term supply stability.

FAQ

What is the maximum operating frequency of the MC9S08LH64CLH at 1.8 V?

The MC9S08LH64CLH supports up to 20 MHz CPU operation at 1.8 V across the full –40 °C to +85 °C temperature range. This is enabled by its internal clock source (ICS) with frequency-locked loop (FLL) and precision-trimmed reference, ensuring stable timing even at minimum supply voltage. The MC9S08LH64CLH maintains full peripheral functionality-including ADC, TPM, and LCD driver-at this frequency.

Does the MC9S08LH64CLH support in-circuit debugging, and what interface is used?

Yes, the MC9S08LH64CLH supports in-circuit debugging via a single-wire background debug (BKGD) interface on PTC6. It provides breakpoint capability (one active breakpoint plus two more in the on-chip debug module) and full on-chip in-circuit emulator (ICE) functionality with three comparators and nine trigger modes. This eliminates the need for external debug headers or JTAG adapters, simplifying development for space-constrained automotive PCBs.

Can the MC9S08LH64CLH drive an LCD without external components?

Yes, the MC9S08LH64CLH integrates a complete LCD controller capable of driving up to 8×36 or 4×40 segments without external bias circuitry. It includes an internal charge pump, programmable VLCD voltage, and dedicated VLLx pins for LCD common-electrode bias generation. The VREFO2 pin provides a trimmable 1.15 V reference for contrast control - enabling fully self-contained LCD operation in automotive dash displays.

What low-power modes does the MC9S08LH64CLH support, and how fast can it wake from stop3?

The MC9S08LH64CLH supports two low-power stop modes, reduced-power wait, and low-power run/wait modes. In stop3 mode - where the voltage regulator remains active but CPU and bus clocks halt - the device achieves a typical wakeup time of 6 μs. This allows rapid response to interrupts from peripherals like ACMP, ADC, or IRQ while maintaining ultra-low quiescent current for battery-sensitive automotive modules.

Is the MC9S08LH64CLH qualified for automotive use, and under which standard?

Yes, the MC9S08LH64CLH is qualified to AEC-Q100 Grade 3 (–40 °C to +85 °C), meeting automotive reliability requirements for passenger compartment applications. It underwent full qualification testing including ESD (±2000 V HBM, ±500 V CDM), latch-up immunity (±100 mA), and thermal cycling - confirming robustness in real-world vehicle environments. This qualification is documented in Freescale's original release and maintained under NXP's product continuity program.