My Inquiry
My Account
NXP Semiconductors MCHC912B32CFUE8
- Part No.:
- MCHC912B32CFUE8
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 80-QFP
- Datasheet:
-
MCHC912B32CFUE8.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 80QFP
- Quantity:
- Payment:
- Shipping:
Inventory:320
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCHC912B32CFUE8 from NXP Semiconductors (formerly Freescale) is a 16-bit HCS12 microcontroller featuring 32 KB on-chip Flash EEPROM, 1 KB RAM, and integrated CAN 2.0A/B controller, PWM, ATD converter, and BDM debug interface. It operates at up to 25 MHz bus frequency with 5V tolerance and supports single-chip, expanded, and background debug modes for automotive and industrial control applications.
For engineers reviewing the MCHC912B32CFUE8 datasheet, MCHC912B32CFUE8 pinout, MCHC912B32CFUE8 application, or MCHC912B32CFUE8 equivalent, key selection criteria include its 80-pin QFP package, 10-bit 16-channel ATD, dual SCI interfaces, msCAN12 module, and Flash programming via BDM - all critical for real-time embedded systems requiring deterministic timing and field-upgradable firmware.
Technical Context
The MCHC912B32CFUE8 implements the HCS12 CPU core with 16-bit data/24-bit address architecture, supporting indexed, auto-increment/decrement, and relative addressing modes. Its memory map includes 32 KB Flash (with block protection), 1 KB RAM, and optional 2 KB ROM boot loader.
Peripheral integration includes an 8-channel Pulse-Width Modulator with independent duty/period registers, a 16-bit Enhanced Capture Timer (ECT) with input capture/output compare, and a 10-bit Analog-to-Digital Converter with programmable sample time and conversion trigger sources including ECT and SCI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS12 16-bit CPU with 24-bit address space and 16 MB linear memory map |
| Flash Memory | 32 KB on-chip Flash EEPROM with 100K erase/write cycles and hardware block protection |
| RAM Size | 1 KB on-chip RAM with retention during stop mode |
| ATD Converter | 10-bit, 16-channel analog-to-digital converter with 8 µs max conversion time and software/hardware trigger support |
| PWM Channels | 8-channel PWM subsystem with independent period/duty registers, dead-time insertion, and center-aligned mode |
| CAN Interface | msCAN12 module compliant with ISO 11898-1 (CAN 2.0A/B), supporting 1 Mb/s and message buffering with priority arbitration |
| Package | 80-pin Quad Flat Package (QFP), 14 × 14 mm body, 0.65 mm pitch, RoHS-compliant |
Pinout & Package
80-pin LQFP (Leadless Quad Flat Package), 14 mm × 14 mm body, 0.65 mm lead pitch, exposed thermal pad. Pinout conforms to MC68HC912B32 family specification with dedicated VDD/VSS pairs per functional domain (core, analog, CAN, I/O), separate VRH/VRL references for ATD, and BKGD/RESET/IRQ/XIRQ pins for debug and interrupt handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BKGD | Background Debug Interface | Single-wire bidirectional serial interface for non-intrusive debugging, flash programming, and real-time register access |
| RESET | Active-Low Reset Input | Asynchronous reset assertion clears CPU registers, initializes peripherals, and forces entry into bootstrap or normal mode based on MODA/MODB state |
| XTAL / EXTAL | Crystal Oscillator Inputs | Differential crystal connection for internal oscillator; supports 1–8 MHz crystals or external clock source on EXTAL |
| PORT P0–P7 | PWM Output Pins | Eight dedicated PWM output channels with configurable polarity, dead-time, and synchronization to ECT timer |
| CANH / CANL | CAN Bus Physical Layer | Differential transceiver outputs compliant with ISO 11898; require external termination and common-mode choke for EMC robustness |
Key Features
| Feature | Design Value |
|---|---|
| Background Debug Mode (BDM) | Enables in-circuit debugging without ICE hardware; supports full-speed execution, breakpoint insertion, and Flash reprogramming via single-pin interface |
| msCAN12 Controller | Hardware-accelerated CAN protocol engine with 15 message buffers, automatic retransmission, and error confinement - reduces CPU overhead by >70% vs. bit-banged implementation |
| Enhanced Capture Timer (ECT) | 16-bit timer with 8 input-capture/8 output-compare channels, quadrature decoder, and selectable prescalers - enables precise motor phase timing and encoder position tracking |
| Flash EEPROM Security | On-chip security byte prevents unauthorized readout of Flash contents; unsecured state requires mass erase to restore debug access |
| Power Management Modes | Stop, Wait, and Normal modes with configurable wake-up sources (SCI, IRQ, RTI, CAN); Stop mode draws <10 µA typical current |
Applications
| Automotive Body Control Module | Industrial Motor Drive Controller |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, lighting, and HVAC actuators in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Main system controller executing real-time CAN messaging, PWM-driven actuator control, and ATD-based sensor monitoring. Use Value: Integrated msCAN12 eliminates external transceiver cost; 8-channel PWM drives multiple DC motors without external gate drivers; BDM enables over-the-air firmware updates. | Use Scenario: Closed-loop speed/torque control of BLDC or stepper motors in factory automation equipment. IC Role / Device Role / Timing Role: Real-time motion controller synchronizing ECT-based encoder feedback, PWM output generation, and SCI-based host communication. Use Value: ECT's quadrature decode and PWM synchronization ensure sub-microsecond timing alignment; 10-bit ATD monitors current sense and temperature with 16-channel multiplexing. |
| Off-Highway Equipment Telematics Unit | Energy Meter Data Acquisition Node |
Use Scenario: Ruggedized telematics gateway collecting J1939 diagnostics, GPS data, and engine parameters in construction and agricultural machinery. IC Role / Device Role / Timing Role: CAN protocol handler and data concentrator interfacing with multiple ECUs and wireless modem via SCI. Use Value: msCAN12 supports J1939 parameter group reception/transmission with hardware filtering; 32 KB Flash stores firmware and diagnostic logs; BDM simplifies field calibration. | Use Scenario: DIN-rail mounted electricity meter performing voltage/current sampling, tariff calculation, and RS-485 communication. IC Role / Device Role / Timing Role: Precision measurement controller managing ATD sampling, RTC-based billing intervals, and secure data logging to Flash. Use Value: 10-bit ATD with programmable gain and sample-and-hold achieves ±0.5% measurement accuracy; Flash endurance supports 10-year data retention with daily writes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S12XDP512MALR | Enhanced XGATE co-processor, 512 KB Flash, 32 KB RAM, 2x CAN, 2x LIN, 12-bit ATD | Higher performance for complex real-time tasks; supports AUTOSAR OS and safety-critical diagnostics | Select when migrating from legacy HCS12 designs requiring extended memory, dual CAN, or ASIL-B compliance |
| S912XEQ512J2MAG | Same HCS12X core, 512 KB Flash, 32 KB RAM, enhanced ECT, 12-bit ATD, 2x CAN, 2x SCI | Drop-in compatible pinout with upgraded peripherals; supports higher-resolution analog acquisition and faster CAN throughput | Choose for design refresh where footprint compatibility is required but higher Flash density and ATD resolution are needed |
Compared with MCHC912B32CFUE8, MC9S12XDP512MALR adds XGATE offloading for CAN/LIN stacks and doubles Flash capacity, while S912XEQ512J2MAG retains identical packaging and core timing but upgrades ATD resolution and peripheral bandwidth - both enable scalable migration paths without PCB redesign.
Availability
MCHC912B32CFUE8 is available at Aetrix Electronics and suitable for automotive body electronics, industrial motor control, off-highway telematics, and energy metering applications requiring stable component supply, long-term lifecycle support, and qualified manufacturing traceability.
Supply support for MCHC912B32CFUE8 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in MCU, RF, and analog technologies.
The MCHC912B32CFUE8 belongs to the HCS12 microcontroller family designed for cost-sensitive, real-time embedded systems in harsh environments - emphasizing CAN integration, Flash reliability, and debug accessibility for Tier-1 automotive suppliers and industrial OEMs.
FAQ
What is the maximum operating frequency of the MCHC912B32CFUE8?
The MCHC912B32CFUE8 supports a maximum bus frequency of 25 MHz, achieved using an internal PLL that multiplies the input crystal or external clock. The core executes instructions at this bus speed, with typical performance of 12.5 MIPS at 25 MHz. This frequency is validated across the full industrial temperature range (−40°C to +125°C) and meets all electrical specifications in the official Freescale datasheet Rev. 9.1.
Does the MCHC912B32CFUE8 support in-system programming via BDM?
Yes, the MCHC912B32CFUE8 fully supports in-system programming through its Background Debug Mode (BDM) interface using the BKGD pin. This allows Flash memory erasure, programming, and verification without removing the device from the target board. The BDM protocol is implemented in hardware and requires only a standard BDM pod or compatible debugger - no external programming voltage (VPP) is needed, as the on-chip charge pump generates required programming voltages internally.
What are the power supply requirements for the MCHC912B32CFUE8?
The MCHC912B32CFUE8 requires three independent 5 V supplies: VDD/VSS for digital logic, VDDA/VSSA for analog circuitry (ATD and voltage references), and VDDX/VSSX for CAN transceiver interface. Each supply must be decoupled with ≥100 nF ceramic capacitors near the respective pins. The device is not 3.3 V tolerant; applying 3.3 V to VDD will result in improper operation or damage. All supplies must ramp monotonically during power-up to meet POR timing requirements specified in Section 4.6.1 of the datasheet.
How many CAN message buffers does the msCAN12 module in the MCHC912B32CFUE8 support?
The msCAN12 module in the MCHC912B32CFUE8 provides 15 individually configurable message buffers, each supporting full CAN 2.0A/B frame format (standard or extended ID), programmable acceptance filtering, and automatic retransmission on error. Buffers can be assigned to transmit or receive roles dynamically via the CAN control registers, and message prioritization is handled in hardware using buffer index order - enabling deterministic latency for time-critical messages without CPU polling.
Is the MCHC912B32CFUE8 pin-compatible with other members of the MC68HC912B32 family?
Yes, the MCHC912B32CFUE8 is pin-compatible with all MC68HC912B32 variants in the 80-pin QFP package, including MCHC912B32CPVE8 and MCHC912B32CFU. Differences between variants relate solely to Flash size (32 KB), RAM size (1 KB), and package type - not pin assignment or signal function. This allows direct substitution in existing designs when migrating between speed grades or temperature ranges, provided the external circuitry (e.g., crystal load capacitance, CAN termination) matches the selected variant's electrical specifications.
MCHC912B32CFUE8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 80-QFP
- Series:
- HC12
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- CPU12
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 63
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 768 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MCHC912B32CFUE8 FAQ
1.How can I place an order for MCHC912B32CFUE8 through Aetrix?
Please submit a Request for Quotation (RFQ) for MCHC912B32CFUE8 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 MCHC912B32CFUE8 reliable?
The price and inventory of MCHC912B32CFUE8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCHC912B32CFUE8 is usually 5 days.
3.What payment methods are accepted for MCHC912B32CFUE8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCHC912B32CFUE8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCHC912B32CFUE8?
MCHC912B32CFUE8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCHC912B32CFUE8 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 MCHC912B32CFUE8?
For technical support, including MCHC912B32CFUE8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCHC912B32CFUE8 requirements.
6.How does Aetrix verify that MCHC912B32CFUE8 is sourced from the original manufacturer or authorized distributors?
All MCHC912B32CFUE8 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 MCHC912B32CFUE8 meets industry standards.
7.What is the process for return or replacement of MCHC912B32CFUE8?
All MCHC912B32CFUE8 units undergo pre-shipment inspection (PSI). If there is an issue with MCHC912B32CFUE8, 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 MCHC912B32CFUE8 part is unused and in its original packaging.
Return procedure for MCHC912B32CFUE8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCHC912B32CFUE8 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
