NXP Semiconductors MC9S12HZ128CAL

Overview

MC9S12HZ128CAL from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller with 128 KB on-chip Flash, 8 KB RAM, and integrated motor control peripherals including dual 8-channel PWM modules, 10-bit 16-channel ADC, LCD controller (32×4), and MSCAN interface. It operates at up to 50 MHz core frequency with PLL-based clock generation and supports automotive-grade temperature range (–40°C to +125°C). It is used in body control modules, HVAC actuators, and small electric powertrain subsystems.

For engineers reviewing the MC9S12HZ128CAL datasheet, MC9S12HZ128CAL pinout, MC9S12HZ128CAL application, or MC9S12HZ128CAL equivalent, key selection criteria include Flash size vs. code footprint, CAN bus integration for vehicle networking, PWM resolution and channel count for multi-motor drive, and qualification for AEC-Q100 Grade 2 operation.

Technical Context

The MC9S12HZ128CAL implements the S12 CPU core with 16-bit data path, Harvard architecture, and 24-bit addressing. Its clock system combines an external crystal oscillator (1–8 MHz), PLL multiplier (up to ×8), and internal voltage regulator (3.3 V), enabling stable 50 MHz operation while maintaining low EMI via programmable PLL loop filter (XFC pin).

It integrates dedicated motor control hardware: two independent 8-channel PWM modules (MC10B8CV1) with complementary outputs, dead-time insertion, and fault protection inputs; plus a stepper stall detector (SSDV1) for open-loop position verification. All are synchronized to a common timer base (TIM16B8CV1) for deterministic phase alignment.

Key Specifications

Pinout & Package

MC9S12HZ128CAL is housed in an 80-pin Quad Flat Package (80QFP), 14 mm × 14 mm, 0.65 mm pitch, thermally enhanced with exposed thermal pad (EP). Pinout conforms to MC9S12HZ256V2 derivative layout per Figure 1-7 (Rev. 2.05), with identical signal mapping for all HZ-series members sharing the 80QFP footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S12HZ256CAL, the MC9S12HZ128CAL trades Flash capacity for lower unit cost and smaller code footprint overhead, while retaining identical real-time control capability; versus S912ZVL12F0MLFR, it lacks ZMM-CAN and BIST but offers proven field reliability and broader toolchain support for legacy maintenance.

Availability

MC9S12HZ128CAL is available at Aetrix Electronics and suitable for automotive HVAC actuators, body control modules, and electric power steering assist units requiring stable component supply across extended product lifecycles.

Supply support for MC9S12HZ128CAL 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The HCS12 family-including MC9S12HZ128CAL-was designed specifically for cost-sensitive, high-reliability automotive body electronics, emphasizing integrated motor control, CAN networking, and AEC-Q100 qualification without external support ICs.

FAQ

What is the maximum operating frequency of the MC9S12HZ128CAL?

The MC9S12HZ128CAL achieves a maximum core frequency of 50 MHz using its on-chip PLL, which multiplies an external 1–8 MHz crystal input. This frequency is sustained across the full –40°C to +125°C operating range and is validated per AEC-Q100 Grade 2 specifications. The MC9S12HZ128CAL's PLL includes XFC pin filtering to ensure sub-0.1% jitter at 50 MHz.

Does the MC9S12HZ128CAL support CAN FD or only classical CAN?

The MC9S12HZ128CAL integrates the MSCANV2 module, which supports only Classical CAN (ISO 11898-1, CAN 2.0A/B) at up to 1 Mbit/s. It does not support CAN FD features such as flexible data-rate, extended data length, or CRC enhancements. For CAN FD, designers must select newer NXP families like S32K1 or S32K3. The MC9S12HZ128CAL remains fully compatible with existing vehicle networks relying on Classical CAN.

How many PWM channels does the MC9S12HZ128CAL provide, and are they independently configurable?

The MC9S12HZ128CAL provides 16 PWM channels organized into two independent MC10B8CV1 modules (8 channels each). Each module supports edge-aligned, center-aligned, and complementary output modes with programmable dead time (0–15.5 µs in 0.5 µs steps). Channels within a module share a common timer base but can be individually enabled, duty-cycled, and polarity-controlled-enabling concurrent control of multiple motors or phases.

Is the MC9S12HZ128CAL pin-compatible with other HZ-series microcontrollers?

Yes-the MC9S12HZ128CAL shares identical 80QFP pinout and signal mapping with MC9S12HZ256CAL, MC9S12HZ64CAL, and all derivatives covered in the MC9S12HZ256 Data Sheet Rev. 2.05 (including MC3S12HZ variants). This allows PCB reuse across Flash-size variants and simplifies migration paths during design-in or firmware scaling.

What debugging interface does the MC9S12HZ128CAL use, and is JTAG supported?

The MC9S12HZ128CAL uses the Background Debug Module (BDMV4), a single-wire serial interface accessible via BKGD pin. It supports flash programming, real-time register and memory access, and non-intrusive breakpoints. JTAG is not implemented; BDM is the sole standardized debug interface for the HCS12 family. The MC9S12HZ128CAL requires a BDM-compatible probe (e.g., P&E Multilink) for development and production programming.