NXP Semiconductors KC9S08GT60ACFDE

Overview

KC9S08GT60ACFDE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU, 60 KB on-chip FLASH memory, and 4 KB RAM. It integrates dual SCI, SPI, I²C, 10-bit ATD with 8 channels, two 3-channel + one 2-channel TPM modules, KBI, and supports three low-power stop modes. It targets cost-sensitive industrial control and sensor interface applications requiring deterministic real-time response.

For engineers reviewing the KC9S08GT60ACFDE datasheet, KC9S08GT60ACFDE pinout, KC9S08GT60ACFDE application, or KC9S08GT60ACFDE equivalent, key selection criteria include FLASH size (60 KB), RAM capacity (4 KB), peripheral set (dual SCI, I²C, SPI, 10-bit ATD), low-voltage operation down to 1.8 V, and support for background debug via single-wire BDM interface.

Technical Context

The KC9S08GT60ACFDE implements the HCS08 CPU core with HC08 instruction set extension including BGND, supporting up to 32 interrupt/reset sources. Its internal clock generator includes FLL with selectable sources (internal RC, external crystal/resonator, or external clock) and ±0.5% frequency deviation across voltage and temperature.

Memory subsystem features FLASH programmable/erasable at 1.8 V, block protection, and security lock; RAM is SRAM with no wait states. Peripherals are mapped into a unified memory space and accessible via standard register reads/writes, with dedicated control/status registers for each module (e.g., TPMxSC, KBISC, SRTISC).

Key Specifications

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), thermally enhanced with exposed pad. Pin count and I/O mapping align with MC9S08GT16A/GT8A family but scaled for 60 KB FLASH and extended peripheral enablement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC60CFUE, KC9S08GT60ACFDE offers smaller QFN footprint and integrated keyboard interrupt, while S9KEAZN64AMLH provides architectural scalability at the cost of increased complexity and power - making KC9S08GT60ACFDE optimal for compact, cost-sensitive, real-time embedded control where legacy code reuse and minimal BOM are priorities.

Availability

KC9S08GT60ACFDE is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, motorized valve actuators, and energy meter front-ends requiring stable component supply and long-lifecycle support.

Supply support for KC9S08GT60ACFDE 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, scalable solutions for automotive, industrial, IoT, and mobile applications, with deep heritage in microcontroller innovation.

The HCS08 family - including KC9S08GT60ACFDE - was designed for cost-sensitive, low-power embedded control applications demanding deterministic real-time response, robust debug support, and long-term supply stability in industrial environments.

FAQ

What is the maximum operating frequency of the KC9S08GT60ACFDE?

The KC9S08GT60ACFDE features an HCS08 CPU core with a maximum bus frequency of 40 MHz. This is achieved using the internal frequency-locked loop (FLL) driven by internal or external clock sources. The actual core instruction throughput depends on bus frequency and instruction cycle count, with most instructions executing in 1–3 bus cycles. The KC9S08GT60ACFDE maintains timing compliance across its specified voltage range (1.8–3.6 V) and temperature range (–40°C to +105°C).

Does the KC9S08GT60ACFDE support in-circuit debugging?

Yes, the KC9S08GT60ACFDE includes a full background debug system (BDM) with single-wire interface. It supports real-time bus capture, breakpoint setting (one active breakpoint plus two in on-chip debug module), and eight-deep FIFO for flow-address logging. Debug operations are fully functional in Run, Wait, and Stop modes. The KC9S08GT60ACFDE does not require external JTAG hardware - only a compatible BDM pod or debugger supporting Freescale/NXP HCS08 BDM protocol is needed.

What are the power supply requirements for the KC9S08GT60ACFDE?

The KC9S08GT60ACFDE operates from a single 1.8–3.6 V supply on VDD/VSS, with separate analog supply pins (VDDAD/VSSAD) that must be tied to the same domain or filtered independently for ADC accuracy. It supports three low-power stop modes with typical current draw as low as 1.2 µA in Stop3 mode. The internal voltage regulator and low-voltage detect (LVD) circuit allow reliable operation across wide input ranges without external supervision - a key design advantage for battery-powered KC9S08GT60ACFDE deployments.

How many serial communication interfaces does the KC9S08GT60ACFDE integrate?

The KC9S08GT60ACFDE integrates two SCI modules (UART-compatible), one SPI module, and one I²C module. Both SCIs support full-duplex asynchronous communication with programmable baud rates, parity, and stop bits. The SPI supports master/slave operation with configurable clock polarity and phase. The I²C module complies with standard-mode (100 kbps) and fast-mode (400 kbps) specifications. These interfaces enable flexible connectivity to sensors, displays, transceivers, and other peripherals without external bridge ICs.

Is the KC9S08GT60ACFDE pin-compatible with other HCS08 devices like the MC9S08GT16A?

No, the KC9S08GT60ACFDE is not pin-compatible with the MC9S08GT16A. While both belong to the HCS08 GT family and share the same 48-pin QFN package option, KC9S08GT60ACFDE has distinct pin assignments due to expanded peripheral enablement (e.g., additional TPM channels, remapped KBI pins) and larger memory mapping. Pinouts must be verified against the KC9S08GT60ACFDE-specific mechanical drawing (document number MC9S08GT60ACFDE.pdf, Appendix B), not GT16A/GT8A datasheets.