NXP Semiconductors MC9S08GT16ACFCE

Overview

MC9S08GT16ACFCE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB Flash, 2 KB RAM, 40-MHz CPU, 10-bit 8-channel ADC, dual SCI, SPI, I²C, two TPM timer modules (5 total channels), and keyboard interrupt support. It operates from 1.8–3.6 V and targets low-power industrial control and sensor interface applications.

For engineers reviewing the MC9S08GT16ACFCE datasheet, MC9S08GT16ACFCE pinout, MC9S08GT16ACFCE application, or MC9S08GT16ACFCE equivalent, key selection criteria include QFN-32 package compatibility, internal FLL clocking with ±0.5% accuracy across voltage/temperature, real-time interrupt in stop modes, FLASH security and block protection, and single-wire background debug interface.

Technical Context

The MC9S08GT16ACFCE implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources. Its internal clock generator uses a frequency-locked loop (FLL) with selectable sources: internal reference, external crystal (32 kHz–4 MHz), or resonator.

Peripherals include two independent serial communications interfaces (SCI1/SCI2), one SPI module, one I²C bus module, an 8-channel 10-bit ATD converter with programmable sample time, and two timer/PWM modules (TPM1 with 3 channels, TPM2 with 2 channels), all configurable via dedicated control registers and supported in run, wait, and stop modes.

Key Specifications

Pinout & Package

MC9S08GT16ACFCE is housed in a 32-pin QFN package (98ASA00473D) with 5 mm × 5 mm body, 0.5 mm pitch, and exposed thermal pad. Pin functions are validated per Freescale MC9S08GT16A Rev. 1 datasheet (July 2006) and QFN Addendum Rev. 0 (July 2014).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08GT16ACFCE, MC9S08AC16CFUE offers more I/O in a larger package but omits KBI-critical for keypad-based systems-while S9KEAZ128AMLH delivers significantly higher compute throughput and peripheral integration at the cost of architectural discontinuity and increased design effort.

Availability

MC9S08GT16ACFCE is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, energy meter front-ends, and motor control interface modules requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08GT16ACFCE 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 markets.

The MC9S08GT16ACFCE belongs to the HCS08 microcontroller family, designed specifically for cost-sensitive, low-power embedded control applications requiring robust analog integration, flexible clocking, and field-proven debug infrastructure.

FAQ

What is the maximum operating frequency of the MC9S08GT16ACFCE?

The MC9S08GT16ACFCE features an HCS08 CPU core with a maximum bus frequency of 40 MHz. This speed is achieved using the internal frequency-locked loop (FLL) with appropriate clock source configuration-such as a 4 MHz crystal-and verified across voltage (1.8–3.6 V) and temperature ranges per its datasheet specifications. The MC9S08GT16ACFCE does not operate at core frequencies above 40 MHz.

Does the MC9S08GT16ACFCE support in-circuit debugging?

Yes, the MC9S08GT16ACFCE includes a single-wire background debug (BDM) interface compliant with Freescale's BDM specification. It supports real-time bus capture, breakpoint setting (one active + two in on-chip debug module), and full on-chip emulation via an 8-deep FIFO and dual comparators. This capability is fully implemented in the MC9S08GT16ACFCE silicon and documented in Chapter 15 of its Rev. 1 datasheet.

What package type and dimensions does the MC9S08GT16ACFCE use?

The MC9S08GT16ACFCE is packaged in a 32-pin QFN (quad flat no-lead) with 5 mm × 5 mm body size, 0.5 mm lead pitch, and exposed thermal pad. Its mechanical drawing is identified as 98ASA00473D per Freescale's QFN Addendum Rev. 0 (July 2014), confirming copper-wire bonding migration from earlier gold-wire variants.

Can the MC9S08GT16ACFCE operate from a single 3.3 V supply?

Yes, the MC9S08GT16ACFCE operates across a supply range of 1.8 V to 3.6 V, making 3.3 V a fully supported and commonly used nominal voltage. All peripherals-including the 10-bit ADC, timers, and communication modules-are specified to function correctly at 3.3 V, with timing and electrical characteristics validated per Appendix A of the MC9S08GT16A/GT8A Data Sheet Rev. 1.

Is FLASH memory security enabled by default on the MC9S08GT16ACFCE?

No, FLASH security is not enabled by default on the MC9S08GT16ACFCE. It must be explicitly configured via the FLASH Options Register (FOPT) and FLASH Protection Register (FPROT) during programming. Once secured, the MC9S08GT16ACFCE prevents read-out and further programming unless unsecured via a specific backdoor key sequence-documented in Section 4.5 of the Rev. 1 datasheet.