NXP Semiconductors MC9S08GT60CFB

Overview

MC9S08GT60CFB from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 60 KB Flash, 4 KB RAM, and a 20 MHz bus frequency. It integrates SCI, SPI, I²C, TPM/PWM, ATD, KBI, and ICG modules, and is housed in a 44-pin LQFP package. It targets cost-sensitive industrial control and automotive body electronics.

For engineers reviewing the MC9S08GT60CFB datasheet, MC9S08GT60CFB pinout, MC9S08GT60CFB application, or MC9S08GT60CFB equivalent, key selection criteria include Flash endurance (100k erase/write cycles), on-chip BDM debug interface, 5V-tolerant I/O with configurable pull-ups, and support for multiple low-power stop modes including Stop3 with RTC wake-up capability.

Technical Context

The MC9S08GT60CFB implements the HCS08 CPU core with 16-bit index register, 8-bit accumulator, and 16-bit stack pointer. Its Internal Clock Generator supports four operational modes-FEI, FEE, FBE, and SCM-with programmable FLL multiplication and crystal/external clock input options.

Peripheral integration includes a 10-bit ATD converter with 8 channels and 4 µs conversion time, dual 16-bit TPM modules supporting input capture, output compare, and edge/center-aligned PWM, plus dual SCI interfaces with LIN support and one I²C module compliant with SMBus v2.0.

Key Specifications

Pinout & Package

MC9S08GT60CFB is packaged in a 44-pin LQFP (7 × 7 mm, 0.8 mm pitch) with exposed thermal pad. Pin assignments follow Freescale's standard HCS08 GB/GT series layout, supporting shared peripheral functions across port pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08GB60CFB, the MC9S08GT60CFB adds ATD and I²C at identical pin count and price point; versus S9KEAZ128AMLH, it offers lower power and simpler firmware but lacks 32-bit performance and modern peripheral sets.

Availability

MC9S08GT60CFB is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance motor controllers, and medical diagnostic handhelds requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08GT60CFB 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 markets, with roots in Freescale's embedded MCU legacy.

The HCS08 family-including MC9S08GT60CFB-was designed for cost-sensitive, low-power embedded control in automotive body electronics and industrial automation where deterministic real-time response and robust debug capability are essential.

FAQ

What is the maximum operating frequency of the MC9S08GT60CFB?

The MC9S08GT60CFB supports a maximum bus frequency of 20 MHz, achieved via its Internal Clock Generator (ICG) module using either internal FLL or external crystal sources. This frequency governs instruction execution speed, peripheral timing resolution, and real-time responsiveness. The HCS08 core executes most instructions in 2–5 cycles, enabling deterministic timing critical for motor control and communication protocols. Bus frequency is independent of core clock and directly defines TPM, SCI, and SPI timing parameters.

Does the MC9S08GT60CFB support in-circuit debugging?

Yes, the MC9S08GT60CFB includes an on-chip Background Debug Mode (BDM) interface accessible through the PTG0 pin. This single-wire interface enables full-speed debugging, flash programming, register inspection, and breakpoint setting without requiring JTAG hardware. The BDM module remains functional in Active Background mode and supports programming during production test. No external debug probe is needed beyond a simple level-shifter circuit compatible with standard BDM tools.

What analog-to-digital capabilities does the MC9S08GT60CFB provide?

The MC9S08GT60CFB integrates a 10-bit Analog-to-Digital Converter (ATD) with 8 input channels (ATD0–ATD7), configurable sample-and-hold time, and 4 µs typical conversion time. It supports software, TPM, or SCI-triggered conversions and provides hardware averaging across up to 4 samples to improve effective resolution. Input range is 0–VDD (5 V), and the module includes dedicated result registers and status flags for efficient interrupt-driven data acquisition in sensor applications.

How many low-power stop modes does the MC9S08GT60CFB support?

The MC9S08GT60CFB supports three distinct stop modes: Stop1 (CPU halted, peripherals active), Stop2 (CPU and most peripherals halted, RAM retained), and Stop3 (only RTC, LVD, and BKGD active, consuming ~1.2 µA typical). All modes support wake-up via external interrupt, KBI, RTC alarm, or BDM activity. Stop3 is especially valuable for battery-powered devices requiring long sleep intervals with precise wake-up timing and minimal current draw.

Is the MC9S08GT60CFB pin-compatible with other HCS08 family members?

Yes, the MC9S08GT60CFB in the 44-pin LQFP package shares identical pinout and electrical characteristics with MC9S08GT32CFB and MC9S08GT16CFB. This allows hardware reuse across memory variants without PCB changes. However, it is not pin-compatible with the MC9S08GB60CFB (same package) due to differences in ATD and I²C pin mappings-specifically, PTC0/PTC1 serve as I²C SDA/SCL on GT-series but as general I/O on GB-series devices.