NXP Semiconductors MC9S08MM128CLK

Overview

MC9S08MM128CLK from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 128 KB flash, 12 KB RAM, and integrated analog peripherals including 16-bit ADC, 12-bit DAC, two op-amps, two trans-impedance amplifiers, and USB 2.0 full-speed interface. It operates up to 48 MHz at ≥2.4 V across –40°C to 105°C and supports ultra-low-power stop modes with Time-of-Day counter and wake-up via SCI, TPM, or PRACMP.

For engineers reviewing the MC9S08MM128CLK datasheet, MC9S08MM128CLK pinout, MC9S08MM128CLK application, or MC9S08MM128CLK equivalent, this page delivers verified technical context, package-specific pin roles, real-world use cases in industrial sensing and USB-connected embedded systems, and validated alternative parts for design continuity.

Technical Context

The MC9S08MM128CLK integrates a HCS08 CPU core with BGND instruction support and handles up to 33 interrupt/reset sources. Its Multipurpose Clock Generator (MCG) provides PLL/FLL-based clock synthesis with 0.2% trimming resolution and supports system frequencies from 4 kHz to 48 MHz using internal reference or external crystals (XOSC1 for 32.768 kHz TOD, XOSC2 for high-frequency USB/system clock).

On-chip analog subsystem includes ADC16 with 4 differential/8 single-ended channels, PDB-triggered sampling coordination, PRACMP with stop3 operation, DAC with 16-word buffer and watermark control, and dedicated TRIAMP/OPAMP blocks for current-to-voltage conversion and signal conditioning - all functional down to 1.8 V supply.

Key Specifications

Pinout & Package

MC9S08MM128CLK is available in three packages: 80-pin LQFP (12 mm × 12 mm), 64-pin LQFP (10 mm × 10 mm), and 81-pin MAPBGA (10 mm × 10 mm). Pin functions are multiplexed per package; key shared signals include BKGD/MS (debug), TPMCLK/IRQ (timer clock/interrupt), DACO (DAC output), VREFO (voltage reference output), IRO (infrared output), and USB_DP/USB_DM (USB differential pair).

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9KEAZ128AMLH and MC9S08AC128CFUE, the MC9S08MM128CLK uniquely combines USB 2.0 device capability, 16-bit ADC with PDB triggering, 12-bit DAC, and dual TRIAMP/OPAMP in a single 8-bit MCU - making it optimal for compact, battery-aware, sensor-to-USB embedded systems requiring analog signal integrity and minimal external components.

Availability

MC9S08MM128CLK is available at Aetrix Electronics and suitable for industrial sensor nodes, USB human interface devices, medical diagnostic instruments, and energy metering subsystems requiring stable component supply and long-term production support.

Supply support for MC9S08MM128CLK 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 delivering secure, connected, and intelligent solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.

The MC9S08MM128CLK belongs to NXP's HCS08 microcontroller family, designed specifically for energy-efficient, analog-rich embedded applications where USB connectivity, precision sensing, and ultra-low-power operation are critical - such as portable medical devices and smart industrial sensors.

FAQ

What is the maximum operating frequency of the MC9S08MM128CLK and under what voltage conditions?

The MC9S08MM128CLK achieves up to 48 MHz CPU operation when supplied with ≥2.4 V, 40 MHz at ≥2.1 V, and 20 MHz at ≥1.8 V - all across the full industrial temperature range of –40°C to 105°C. These speed grades are guaranteed by characterization and apply to the HCS08 core with MCG clock configuration.

Does the MC9S08MM128CLK support USB functionality without external components?

Yes, the MC9S08MM128CLK integrates a full-speed USB 2.0 transceiver and on-chip 3.3 V regulator, enabling direct USB device connectivity without external PHY or voltage regulation components. It supports control, bulk, interrupt, and isochronous transfer types per USB Specification 2.0.

What analog peripherals are included in the MC9S08MM128CLK and how are they used in sensor applications?

The MC9S08MM128CLK includes ADC16 (16-bit, 4 differential/8 single-ended), DAC (12-bit), PRACMP, two OPAMPs, and two TRIAMPs. In sensor applications, TRIAMPs convert photodiode currents to voltage, OPAMPs condition signals, ADC16 digitizes with PDB-synchronized sampling, and DAC provides reference voltages - all within one chip.

How does the MC9S08MM128CLK manage ultra-low-power operation in battery-powered systems?

The MC9S08MM128CLK offers two ultra-low-power stop modes, including stop3 with active Time-of-Day (TOD) counter (1/4 sec resolution, ≤64 s timeout) and wake-up capability via SCI, TPM, PRACMP, or KBI. Typical wake-up time from stop3 is 6 µs, enabling rapid response while minimizing average current draw.

Is the MC9S08MM128CLK pin-compatible with other members of the MC9S08MM series?

No - the MC9S08MM128CLK is not pin-compatible across the MC9S08MM series. While MC9S08MM128, MM64, and MM32 share the same 64-pin LQFP pinout, the MC9S08MM32A variant has NC pins at positions 56–59, and the 80-pin LQFP and 81-pin MAPBGA packages have distinct pin assignments. Always verify package-specific pin mapping for each variant.