NXP Semiconductors MC9S08JM16CGT

Overview

MC9S08JM16CGT from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB flash, 1 KB RAM, USB 2.0 full-speed interface, 12-bit ADC, and dual TPM timers - designed for embedded control in USB-connected industrial sensors and human-interface devices.

For engineers reviewing the MC9S08JM16CGT datasheet, MC9S08JM16CGT pinout, MC9S08JM16CGT application, or MC9S08JM16CGT equivalent, key selection criteria include USB device controller integration, 48 MHz CPU clock capability, QFN-48 package compatibility, and on-chip debug support with background debugging system (BDM).

Technical Context

The MC9S08JM16CGT implements the S08CPUV2 core with HC08 instruction set extension, supporting up to 48 MHz CPU frequency and 24 MHz bus speed. Its MCG clock generator provides PLL and FLL modes with internal reference trimming, enabling stable USB timing without external crystal.

It integrates a dedicated USB 2.0 full-speed transceiver with on-chip 3.3 V regulator, 8-channel 12-bit ADC with temperature sensor, two SPI modules, dual I²C interfaces, and two 16-bit timer/pulse-width modulator (TPM) modules - each configurable for input capture, output compare, or edge-aligned PWM.

Key Specifications

Pinout & Package

MC9S08JM16CGT is housed in a 48-pin quad flat no-lead (QFN) package with exposed thermal pad (98ASA00466D), compatible with copper-wire interconnect process per Freescale QFN Addendum Rev. 0 (2014). The package supports reflow soldering and requires proper thermal pad grounding per EB806 guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08JM16CGT, the MC9S08JM60CGT offers scalable flash capacity within identical USB/peripheral architecture, while the MC9S08AC128CFGE trades USB for CAN and uses a different package - making it unsuitable for drop-in USB replacement but viable for CAN-centric designs.

Availability

MC9S08JM16CGT is available at Aetrix Electronics and suitable for USB peripheral development, industrial sensor nodes, and embedded firmware updater modules requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08JM16CGT 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 company formed from the spin-off of Philips' semiconductor division, now specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The MC9S08JM16CGT belongs to the HCS08 family - designed specifically for cost-sensitive, USB-integrated embedded control applications requiring low-power operation, on-chip debug, and robust analog peripherals.

FAQ

What is the maximum operating frequency of the MC9S08JM16CGT CPU?

The MC9S08JM16CGT CPU supports a maximum frequency of 48 MHz, achieved via its Multi-Purpose Clock Generator (MCG) in PLL mode. This enables deterministic real-time execution for USB transactions and interrupt-driven peripherals. The internal bus operates at up to 24 MHz, and the MC9S08JM16CGT maintains timing compliance across industrial temperature ranges (-40°C to +105°C) when supplied with 2.7–5.5 V.

Does the MC9S08JM16CGT include a built-in USB transceiver?

Yes, the MC9S08JM16CGT integrates a full-speed USB 2.0 transceiver with on-chip 3.3 V regulator (VUSB33), eliminating the need for external PHY components. It supports endpoint 0 and up to six additional endpoints, with dedicated 256-byte USB RAM for descriptor and data buffering. The MC9S08JM16CGT complies with USB specification v2.0 for device enumeration and control transfers.

What low-power modes does the MC9S08JM16CGT support, and which peripherals remain active in Stop3 mode?

The MC9S08JM16CGT supports Wait, Stop2, and Stop3 modes. In Stop3 mode, the CPU and bus clocks halt while RAM, USB RAM, analog comparator (ACMP), and real-time counter (RTC) remain operational. This enables sub-µA standby current with USB wakeup capability - critical for battery-powered applications using the MC9S08JM16CGT as a USB sensor node controller.

Can the MC9S08JM16CGT operate without an external crystal?

Yes, the MC9S08JM16CGT can operate without an external crystal by using its internal reference clock with MCG FLL mode. The internal trimmed RC oscillator supports USB-compliant timing (±2% accuracy) when calibrated - verified in the MC9S08JM16CGT datasheet Appendix A. External crystals (1–20 MHz) are optional for higher precision or specific frequency requirements.

What debug interface does the MC9S08JM16CGT use, and what hardware is required?

The MC9S08JM16CGT uses a single-wire Background Debug Mode (BDM) interface via the BKGD/MS pin. No JTAG header or external emulator is needed - standard BDM probes (e.g., P&E Multilink) connect directly. The MC9S08JM16CGT's on-chip debug module includes breakpoint comparators, trigger logic, and 8-deep FIFO for flow tracing, enabling full in-circuit debugging and flash programming.