NXP Semiconductors MC9S08LL8CLH

Overview

MC9S08LL8CLH from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 10,240 bytes of dual-array FLASH, 2080 bytes of RAM, and integrated LCD driver supporting 4×28 or 8×16 segments. It operates at up to 20 MHz across 1.8–3.6 V and –40°C to +85°C, featuring 8-channel 12-bit ADC, analog comparator, SPI/I²C/SCI interfaces, two TPM modules, and TOD timer - deployed in battery-powered industrial control panels and low-power metering displays.

For engineers reviewing the MC9S08LL8CLH datasheet, MC9S08LL8CLH pinout, MC9S08LL8CLH application, or MC9S08LL8CLH equivalent, this page delivers verified electrical specs, QFN-48 package mapping, real-world use cases for LCD-based embedded systems, and validated alternative parts with documented functional and packaging differences.

Technical Context

The MC9S08LL8CLH 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 factory-trimmed internal reference (±2% deviation over voltage/temperature), enabling bus frequencies from 1 MHz to 10 MHz without external crystals.

Power management includes Stop2/Stop3 modes with sub-μA current draw (400 nA typical in Stop3), a dedicated 1-kHz low-power oscillator for RTC wake-up, and peripheral clock gating to disable unused modules. The device supports secure FLASH/RAM access and features single-wire background debug (BKGD) with on-chip ICE module containing three comparators and eight-deep FIFO.

Key Specifications

Pinout & Package

MC9S08LL8CLH is housed in a 48-pin QFN package (98ASA00466D) with exposed thermal pad, copper-wire interconnect, and 0.5 mm pitch. Pin functions are defined per Freescale Document MC9S08LL16 Rev. 7 (covers MC9S08LL8).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08LL8CLH, MC9S08LL16CLH offers 58% more FLASH in identical packaging for seamless migration, while S9KEAZ128AMLH provides modern ARM architecture at the cost of complete software and hardware redesign.

Availability

MC9S08LL8CLH is available at Aetrix Electronics and suitable for industrial control panels, smart energy meter displays, and portable medical UIs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant QFN packaging.

Supply support for MC9S08LL8CLH 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 acquired Freescale in 2015 and maintains full technical support, documentation, and product longevity for the legacy HCS08 portfolio.

The MC9S08LL8CLH belongs to the LL-series ultra-low-power 8-bit MCU family, designed specifically for cost-sensitive, battery-operated LCD-based applications demanding sub-μA stop-mode current and integrated analog peripherals.

FAQ

What is the maximum operating frequency of the MC9S08LL8CLH?

The MC9S08LL8CLH supports a maximum CPU frequency of 20 MHz at 3.6 V across the full industrial temperature range (–40°C to +85°C). Bus frequency is derived from the internal clock source (ICS) FLL or external oscillator, with ICS supporting 1–10 MHz bus speeds and XOSC supporting up to 16 MHz crystal input.

Does the MC9S08LL8CLH support in-circuit debugging?

Yes, the MC9S08LL8CLH includes a single-wire background debug (BKGD) interface on PTC6, enabling full in-circuit debugging via Freescale's BDM protocol. It supports one hardware breakpoint plus two additional breakpoints in the on-chip ICE debug module, with trace capabilities including change-of-flow address capture.

What LCD configurations does the MC9S08LL8CLH support?

The MC9S08LL8CLH LCD driver supports either 4×28 or 8×16 segment configurations, with internal charge pump and programmable contrast control via a trimmed internal reference voltage. Segment outputs are multiplexed across PORT D and PORT E pins (LCD[0:15]), and VLCD pin supplies regulated voltage to the LCD glass.

Is the MC9S08LL8CLH pin-compatible with other devices in the LL-series?

Yes, the MC9S08LL8CLH shares identical 48-QFN pinout and peripheral mapping with MC9S08LL16CLH, including identical placement of BKGD (PTC6), SCI (PTC0/PTC1), ADC inputs (PTA6/PTA7), and LCD segment drivers. This allows direct PCB reuse when upgrading FLASH capacity.

What is the minimum supply voltage for RAM retention in the MC9S08LL8CLH?

The MC9S08LL8CLH guarantees RAM data retention down to 0.6 V (VRAM min), enabling reliable state preservation during deep brown-out conditions. This specification is validated across temperature and process corners, and applies when the device is in Stop2 or Stop3 mode with clocks disabled.