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NXP Semiconductors MC9S12HZ256VAL
- Part No.:
- MC9S12HZ256VAL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 112-LQFP
- Datasheet:
-
MC9S12HZ256VAL.pdf
- Description:
- IC MCU 16BIT 256KB FLASH 112LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MC9S12HZ256VAL from NXP (formerly Freescale) is a 16-bit HCS12 microcontroller with 256 KB on-chip Flash, 12 KB RAM, and integrated motor control peripherals including an 8-channel PWM module, 10-bit 16-channel ADC, and dedicated Motor Controller (MC10B8CV1) supporting up to four brushed DC motors. It features a 25 MHz bus speed, background debug interface, and LCD controller for automotive body electronics and industrial motion systems.
For engineers reviewing the MC9S12HZ256VAL datasheet, MC9S12HZ256VAL pinout, MC9S12HZ256VAL application, or MC9S12HZ256VAL equivalent, key selection criteria include its integrated motor PWM outputs (M0C0P/M0C0M through M3C1P), on-die voltage regulator (VREG3V3V2), and HCS12 CPU core compatibility - all critical for cost-sensitive, real-time motor sequencing in automotive HVAC actuators and industrial valve drivers.
Technical Context
The MC9S12HZ256VAL implements the S12 CPU core with 25 MHz maximum bus frequency and supports multiple low-power modes (Wait, Stop, Pseudo-Stop) managed by the Clocks and Reset Generator (CRGV4). Its PLL-based clock system accepts external crystal (EXTAL/XTAL) or oscillator input and provides configurable system clocks for peripheral synchronization.
It integrates dedicated hardware modules including the Motor Controller (MC10B8CV1) for independent PWM generation per motor channel, Stepper Stall Detector (SSDV1), and Liquid Crystal Display (LCD32F4BV1) controller with 32 frontplane/4 backplane drive capability - all mapped into a unified memory space via Module Mapping Control (MMCV4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12 16-bit CPU with 25 MHz max bus speed - enables deterministic real-time control loops for motor commutation and sensor sampling. |
| Memory | 256 KB Flash (FTS256K2V1), 12 KB RAM, 2 KB EEPROM (EETS2KV1) - supports field firmware updates and nonvolatile parameter storage without external components. |
| ADC | 10-bit, 16-channel ATD10B16CV4 with external trigger inputs (ETRIG0–ETRIG3) - allows synchronized sampling of current/voltage feedback during PWM dead-time. |
| PWM | 8-channel PWM8B6CV1 + dedicated MC10B8CV1 motor controller with independent M0–M3 output pairs - delivers precise bidirectional drive for up to four DC motors. |
| LCD Driver | LCD32F4BV1 supporting 32×4 segment drive (128 segments) with internal charge pump - eliminates need for external LCD bias supply in instrument cluster interfaces. |
| Debug Interface | Background Debug Module (BDMV4) with single-wire interface - enables in-circuit flash programming and real-time variable monitoring without halting CPU operation. |
| Supply Regulation | Dual Output Voltage Regulator (VREG3V3V2) providing 3.3 V for core logic and 5.0 V for I/O - simplifies power design by integrating two regulated rails. |
Pinout & Package
MC9S12HZ256VAL is housed in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm pitch, compliant with JEDEC MO-220. Thermal characteristics support operation from –40°C to +105°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EXTAL / XTAL | Oscillator Input / Output | Connects to external crystal (typically 4–8 MHz) to generate base clock for PLL; required for stable timing in motor control loops. |
| XFC | PLL Loop Filter | Analog filter node for PLL stability; requires external RC network (e.g., 10 kΩ + 10 nF) to set lock time and jitter performance. |
| BKGD | Background Debug Data | Single-wire BDM interface pin - used for flash programming, breakpoint insertion, and register read/write during runtime debugging. |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers and initializes peripheral modules; debounced externally for noise immunity in automotive environments. |
| M0C0P / M0C0M | Motor 0 PWM Outputs | Complementary high-side/low-side PWM signals for H-bridge drive; configured via MC10B8CV1 registers for phase-control or direction+PWM schemes. |
| AN0–AN15 | Analog Inputs | 16 dedicated ADC input channels with programmable gain and sample-and-hold - used for motor current sensing, temperature monitoring, and potentiometer feedback. |
| FP0–FP31 / BP0–BP3 | LCD Frontplane / Backplane | Direct segment driver outputs supporting static or multiplexed LCD displays up to 128 segments - reduces BOM count in dashboard UIs. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Motor Controller (MC10B8CV1) | Hardware-accelerated PWM generation for four independent motors with dead-time insertion, fault detection, and synchronous update - eliminates software overhead in multi-motor sequencing. |
| Stepper Stall Detector (SSDV1) | Detects loss of step synchronization in stepper motors via back-EMF monitoring - enables closed-loop stall recovery without position encoder. |
| Dual-Voltage Regulator (VREG3V3V2) | On-chip 3.3 V core rail and 5.0 V I/O rail with thermal shutdown - removes need for discrete regulators in space-constrained automotive modules. |
| Background Debug (BDMV4) | Single-pin, non-intrusive debug interface supporting flash erase/program, memory inspection, and real-time trace - accelerates development and field firmware updates. |
| LCD Controller (LCD32F4BV1) | Configurable 32×4 segment driver with internal charge pump and software-selectable bias - enables direct connection to passive LCDs in instrument clusters and control panels. |
Applications
| Automotive HVAC Actuators | Industrial Valve Positioners |
|---|---|
|
Use Scenario: Precise positioning of blend doors and air flaps in vehicle climate control systems using 12 V brushed DC motors. IC Role / Device Role / Timing Role: MCU executing PID position control, reading potentiometer feedback via ADC, and driving H-bridges with complementary PWM outputs (M0C0P/M0C0M). Use Value: Integrated motor controller and 2 KB EEPROM enable self-calibration and end-of-line learning without external memory or timing ICs. |
Use Scenario: Closed-loop control of pneumatic or electric linear actuators in process automation valves requiring position accuracy and fault reporting. IC Role / Device Role / Timing Role: Real-time execution of position loop at 1 kHz, monitoring current sense (AN0–AN3) and limit switches, while logging fault events to EEPROM. Use Value: On-die 3.3 V/5.0 V regulation and CAN interface (MSCANV2) simplify interface to PLC networks and reduce external component count. |
| Automotive Instrument Clusters | Medical Infusion Pump Controllers |
|
Use Scenario: Driving segmented LCD displays (e.g., fuel gauge, gear indicator) alongside LED backlighting and button scan in digital dashboards. IC Role / Device Role / Timing Role: LCD32F4BV1 controller managing 128-segment display; PWM8B6CV1 dimming backlight LEDs; BDMV4 enabling field calibration. Use Value: Integrated LCD driver eliminates external bias generator and reduces EMI from external clock sources in safety-critical displays. |
Use Scenario: Controlling peristaltic pump motor speed and direction while monitoring occlusion pressure and battery voltage in portable infusion devices. IC Role / Device Role / Timing Role: MC10B8CV1 generating precise bidirectional PWM for reversible pump motor; ATD10B16CV4 sampling pressure transducer and battery level. Use Value: Built-in voltage regulator and EEPROM allow compact, battery-operated design with long-term calibration retention and low standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar motor control microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S912XHZ256F0MLH | Pin-compatible HCS12X upgrade with enhanced PLL, larger RAM (20 KB), and improved ADC resolution (12-bit option); same 112-LQFP package. | Supports higher servo loop rates and more complex diagnostics; suitable for next-gen HVAC modules requiring OTA updates. | Select when migrating legacy designs needing higher performance headroom and extended lifecycle availability. |
| MC9S12XEP100MAL | Higher integration: includes CAN FD, Ethernet MAC, and enhanced security (AES engine); 144-LQFP package - not pin-compatible. | Targets advanced driver assistance systems (ADAS) domain controllers where motor control coexists with communication and security requirements. | Choose only if CAN FD, secure boot, or Ethernet connectivity are mandatory - requires PCB redesign. |
Compared with S912XHZ256F0MLH and MC9S12XEP100MAL, the MC9S12HZ256VAL offers optimal balance of motor-specific peripherals, proven automotive qualification, and minimal BOM cost - making it ideal for cost-sensitive, high-volume body electronics where feature parity suffices.
Availability
MC9S12HZ256VAL is available at Aetrix Electronics and suitable for automotive HVAC actuators, industrial valve positioners, instrument cluster displays, and medical infusion pump controllers requiring stable component supply across extended production lifecycles.
Supply support for MC9S12HZ256VAL 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 automotive, industrial, and IoT applications, with deep expertise in microcontrollers, secure connectivity, and analog solutions.
The MC9S12HZ256VAL belongs to NXP's legacy HCS12 family, designed specifically for cost-optimized, real-time motor control in automotive body electronics - emphasizing integration of PWM, ADC, and LCD drivers to minimize external components.
FAQ
What is the maximum operating frequency of the MC9S12HZ256VAL?
The MC9S12HZ256VAL features an HCS12 CPU core with a maximum bus frequency of 25 MHz. This is achieved using the on-chip Phase-Locked Loop (PLL) to multiply the input crystal frequency (e.g., 8 MHz EXTAL → 32 MHz PLL output → 25 MHz bus clock). The MC9S12HZ256VAL datasheet specifies this as the rated maximum for reliable operation across the full temperature range (–40°C to +105°C).
Does the MC9S12HZ256VAL support CAN communication?
Yes, the MC9S12HZ256VAL includes Freescale's Scalable Controller Area Network (MSCANV2) module, which implements ISO 11898-compliant CAN 2.0A/B protocol. It supports bit rates up to 1 Mbps, message buffering, and automatic retransmission - enabling robust communication in automotive networks such as body control modules interfacing with other ECUs.
How many PWM channels does the MC9S12HZ256VAL provide for motor control?
The MC9S12HZ256VAL provides dual PWM resources: eight general-purpose channels via PWM8B6CV1 and four dedicated motor output pairs (M0–M3) via MC10B8CV1. Each motor pair includes complementary high-side/low-side outputs (e.g., M0C0P/M0C0M), enabling direct H-bridge drive with programmable dead-time - totaling 16 distinct PWM-capable pins for multi-motor applications.
What packaging and temperature grade is the MC9S12HZ256VAL offered in?
The MC9S12HZ256VAL is supplied in a 112-pin LQFP (Low-Profile Quad Flat Package) with 0.4 mm lead pitch and is qualified for automotive-grade operation from –40°C to +105°C ambient. This package is documented in Appendix C of the MC9S12HZ256VAL datasheet and supports standard reflow soldering profiles used in automotive electronics manufacturing.
Is the MC9S12HZ256VAL pin-compatible with other HCS12 derivatives like the MC9S12HZ128?
No, the MC9S12HZ256VAL is not pin-compatible with MC9S12HZ128 or MC9S12HZ64 variants. While all belong to the HCS12HZ family and share architectural similarities, they differ in pin count (112 vs. 80-pin QFP) and peripheral mapping. The MC9S12HZ256VAL's 112-LQFP package accommodates additional I/O, LCD drivers, and motor control signals not present in smaller derivatives.
MC9S12HZ256VAL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 112-LQFP
- Series:
- HCS12
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- HCS12
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, SCI, SPI
- Peripherals:
- LCD, Motor control PWM, POR, PWM, WDT
- Number of I/O:
- 85
- Program Memory Size:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 12K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.35V ~ 5.5V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S12HZ256VAL FAQ
1.How can I place an order for MC9S12HZ256VAL through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S12HZ256VAL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MC9S12HZ256VAL reliable?
The price and inventory of MC9S12HZ256VAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S12HZ256VAL is usually 5 days.
3.What payment methods are accepted for MC9S12HZ256VAL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S12HZ256VAL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S12HZ256VAL?
MC9S12HZ256VAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S12HZ256VAL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MC9S12HZ256VAL?
For technical support, including MC9S12HZ256VAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S12HZ256VAL requirements.
6.How does Aetrix verify that MC9S12HZ256VAL is sourced from the original manufacturer or authorized distributors?
All MC9S12HZ256VAL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MC9S12HZ256VAL meets industry standards.
7.What is the process for return or replacement of MC9S12HZ256VAL?
All MC9S12HZ256VAL units undergo pre-shipment inspection (PSI). If there is an issue with MC9S12HZ256VAL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MC9S12HZ256VAL part is unused and in its original packaging.
Return procedure for MC9S12HZ256VAL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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