NXP Semiconductors MC9S12C64CFAE

Overview

MC9S12C64CFAE from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller featuring 64 KB on-chip Flash, 4 KB RAM, and integrated CAN 2.0A/B controller, PWM, 10-bit 8-channel ADC, and BDM debug interface. It operates at up to 25 MHz core frequency with 5.0 V supply and targets automotive body control modules, industrial motor controllers, and embedded gateway nodes requiring deterministic real-time response.

For engineers reviewing the MC9S12C64CFAE datasheet, MC9S12C64CFAE pinout, MC9S12C64CFAE application, or MC9S12C64CFAE equivalent, key selection criteria include its 80-pin LQFP package, 64 KB Flash/4 KB RAM memory configuration, CAN+PWM+ADC integration, and legacy automotive qualification (AEC-Q100 Grade 2).

Technical Context

The MC9S12C64CFAE implements the S12 CPU core with 16-bit data path and 24-bit address bus, supporting banked memory mapping via PPAGE register. Its clock system includes PLL with configurable multiplication (1–32×), internal RC oscillator, and external crystal support up to 8 MHz.

Peripheral integration follows HCS12 architecture: scalable CAN module (MSCAN) with 15 message buffers, 8-channel 10-bit ATD converter with programmable sample time and conversion triggers, and 8-channel 8-bit PWM with center-aligned mode and dead-time insertion.

Key Specifications

Pinout & Package

MC9S12C64CFAE is housed in an 80-pin LQFP (12 × 12 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are defined per MC9S12C Family Reference Manual Rev 01.24, Chapter 1.3.1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit automotive microcontroller applications.

Compared with MC9S12C64CFAE, MC9S12XDP512 offers significantly higher memory and co-processing capability but demands layout changes and toolchain upgrades, while S912ZVL64F0MLFR provides modernized CAN FD readiness and EMI robustness at the cost of reduced peripheral count and different package geometry.

Availability

MC9S12C64CFAE is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor interfaces, and embedded CAN gateways requiring stable component supply across extended product lifecycles.

Supply support for MC9S12C64CFAE 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 deep heritage in automotive microcontrollers.

The MC9S12C family was designed specifically for cost-sensitive, high-reliability automotive body electronics applications where CAN integration, AEC-Q100 compliance, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the MC9S12C64CFAE?

The MC9S12C64CFAE supports a maximum core frequency of 25 MHz, achieved via its internal PLL configured with external crystal input (e.g., 4 MHz XTAL × 6.25 = 25 MHz). This frequency is validated across the full −40 °C to +105 °C temperature range and 4.5–5.5 V supply, enabling deterministic real-time execution for automotive control loops.

Does the MC9S12C64CFAE support CAN FD?

No, the MC9S12C64CFAE features the legacy MSCAN module compliant only with CAN 2.0A/B protocols (up to 1 Mbit/s). It does not support CAN FD data rates, frame formats, or CRC enhancements. For CAN FD capability, consider NXP's S32K1 or S912ZVL series, which provide native CAN FD controllers.

How is flash programming performed on the MC9S12C64CFAE?

Flash programming on the MC9S12C64CFAE is performed via the single-pin BKGD interface using Freescale/NXP BDM protocol. No external programmer is required - standard debug probes (e.g., PE Micro Cyclone, SEGGER J-Link with BDM firmware) can erase, program, and verify the 64 KB Flash through background debug mode without CPU interruption.

What are the power supply requirements for the MC9S12C64CFAE analog section?

The MC9S12C64CFAE requires separate analog supply connections: VDDA and VSSA must be decoupled with 100 nF ceramic capacitors and routed independently from digital VDD/VSS. These pins power the 10-bit ATD converter and internal voltage reference, and must remain within 4.5–5.5 V with ripple <10 mVpp to maintain ADC accuracy.

Is the MC9S12C64CFAE pin-compatible with other MC9S12C family members?

Yes, the MC9S12C64CFAE shares identical 80-pin LQFP pinout and signal mapping with MC9S12C128 and MC9S12C32 in the same package variant (CFAE suffix), enabling hardware reuse across memory variants. However, peripheral enablement (e.g., Flash size, RAM size) is determined by mask ROM configuration and cannot be upgraded post-manufacture.