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NXP Semiconductors MC908AZ32ACFUER
- Part No.:
- MC908AZ32ACFUER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-QFP
- Datasheet:
-
MC908AZ32ACFUER.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,497
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Product details
Overview
MC908AZ32ACFUER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring 32 KB on-chip Flash memory, 1 KB RAM, and integrated CAN 2.0A/B controller. It operates at up to 20 MHz bus frequency with internal PLL clock generation, includes 15-channel 10-bit ADC, SCI/SPI/keyboard/COP/LVI modules, and targets automotive body control, industrial sensor nodes, and CAN-based embedded systems.
For engineers reviewing the MC908AZ32ACFUER datasheet, MC908AZ32ACFUER pinout, MC908AZ32ACFUER application, or MC908AZ32ACFUER equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options for design-in and long-term supply planning.
Technical Context
The MC908AZ32ACFUER implements the HCS08 CPU core with enhanced BDM debug interface, supports full CAN protocol stack via MSCAN08 module with message buffering and ID filtering, and integrates a configurable Clock Generator Module (CGM) with crystal oscillator + PLL for precise timing control across voltage and temperature ranges.
Its System Integration Module (SIM) provides centralized reset management, interrupt vectoring, low-power WAIT/STOP modes, and break interrupt handling - all coordinated with the Brake Module for safe debugging and fault recovery in safety-critical environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | HCS08 8-bit CPU with BDM interface and 16-bit index register for efficient pointer arithmetic |
| Flash Memory | 32 KB on-chip Flash with block protection, mass/page erase, and 100K write/erase cycles |
| RAM | 1 KB static RAM with retention during STOP mode for fast wake-up state preservation |
| CAN Interface | MSCAN08 module supporting CAN 2.0A/B, 15 message buffers, and programmable bit timing |
| ADC | 15-channel 10-bit successive-approximation ADC with internal reference and scan mode |
| Operating Voltage | 2.7–5.5 V supply range enabling direct battery operation in 12 V automotive systems |
| Max Bus Frequency | 20 MHz derived from internal PLL, allowing deterministic real-time response in control loops |
Pinout & Package
MC908AZ32ACFUER is housed in a 64-pin QFP (Quad Flat Package) with 0.5 mm pitch, thermally enhanced for automotive under-hood applications. Pin assignments include dedicated CAN Tx/Rx, multiple I/O ports (PTA–PTH), analog inputs (ATD0–ATD15), and dual power domains (VDD/VSS and VDDA/VSSA).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual-domain digital supply pins; decoupling required per datasheet layout guidelines |
| VDDA, VSSA | Analog power and ground | Isolated analog domain for ADC and CGM stability; must be filtered separately |
| OSC1, OSC2 | Crystal oscillator input/output | Supports 1–8 MHz external crystal; internal load capacitors enabled by CONFIG register |
| CANTx, CANRx | CAN differential transmitter/receiver | Direct connection to external CAN transceiver (e.g., MC33883); no internal termination |
| RST | Active-low reset input | Accepts external reset signal or internal LVI/COP reset assertion; Schmitt-triggered |
| PTA0–PTA7 | Port A bidirectional I/O | 8-bit general-purpose port with pull-up enable and interrupt-on-change capability |
| PTB0–PTB7 | Port B with ADC channel mapping | Shared I/O and analog inputs ATD0–ATD7; selectable as digital or analog function |
| CGMXFC | PLL filter capacitor connection | External capacitor (typically 1–10 nF) sets PLL loop bandwidth and lock time |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash programming | Single-supply in-system programming via BDM interface eliminates need for external programmers |
| MSCAN08 CAN controller | Hardware-accelerated CAN protocol handling with automatic retransmission and error confinement |
| Computer Operating Properly (COP) | Configurable watchdog timer with independent clock source prevents software lockup in harsh environments |
| Low-Voltage Inhibit (LVI) | Programmable brown-out detection with hysteresis ensures reliable reset below 2.5 V nominal |
| Monitor ROM (MON) | Built-in bootloader enables firmware updates over SCI without external tools or Flash erase cycles |
Applications
| Automotive Body Control Unit (BCU) | Industrial CAN Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Primary MCU executing CAN message arbitration, PWM motor control, and ADC-based position sensing. Use Value: Integrated MSCAN08 and 15-channel ADC reduce external component count and PCB area while meeting ISO 11898-2 EMC requirements. | Use Scenario: Distributed temperature, pressure, and vibration monitoring in factory automation systems using CANopen protocol. IC Role / Device Role / Timing Role: Edge node processor collecting analog sensor data, performing local threshold checks, and transmitting alerts via CAN bus. Use Value: 2.7–5.5 V operation supports wide-input DC-DC supplies; STOP mode current < 10 µA extends battery life in wireless gateways. |
| Motor Control Interface Module | Smart HVAC Actuator |
Use Scenario: Bidirectional communication between ECU and brushless DC motor drivers in HVAC or seat adjustment systems. IC Role / Device Role / Timing Role: CAN gateway translating LIN/UART commands to CAN frames while managing motor enable/disable sequencing. Use Value: Hardware FIFO and message buffering in MSCAN08 prevent frame loss during high-priority CAN traffic bursts. | Use Scenario: Position feedback and thermal compensation for damper actuators in commercial building HVAC systems. IC Role / Device Role / Timing Role: Real-time closed-loop control using ADC inputs (NTC thermistors, potentiometers) and PWM outputs driving stepper motors. Use Value: On-chip 10-bit ADC with internal reference eliminates need for external precision voltage references, lowering BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08DZ32F2 | Same HCS08 core, 32 KB Flash, but adds EEPROM and enhanced CAN timing flexibility | Preferred where nonvolatile parameter storage (e.g., calibration data) is required without external SPI EEPROM | Select MC9S08DZ32F2 when field-updatable configuration persistence is mandatory |
| S9KEAZ32AMLC | Kinetis E-series ARM Cortex-M0+ core, 32 KB Flash, higher performance, but requires toolchain migration | Suitable for next-generation designs needing >20 MHz throughput or RTOS support | Choose S9KEAZ32AMLC only if migrating to ARM architecture and accepting longer development cycle |
Compared with MC908AZ32ACFUER, MC9S08DZ32F2 offers built-in EEPROM for robust parameter storage, while S9KEAZ32AMLC delivers significantly higher compute throughput and modern peripheral sets - both require careful evaluation of legacy code compatibility and toolchain readiness.
Availability
MC908AZ32ACFUER is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN networks, and smart actuator systems requiring stable component supply and long-term lifecycle support.
Supply support for MC908AZ32ACFUER 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 microcontroller innovation.
The MC908AZ32ACFUER belongs to the HCS08 family - designed specifically for cost-sensitive, reliability-critical automotive and industrial control applications requiring CAN integration, low-power operation, and robust debug capabilities.
FAQ
What is the maximum operating frequency of the MC908AZ32ACFUER?
The MC908AZ32ACFUER achieves a maximum bus frequency of 20 MHz using its internal Phase-Locked Loop (PLL) clock generator. This frequency is derived from an external crystal (1–8 MHz) multiplied by the PLL, and it defines the timing base for instruction execution, peripheral operation, and CAN bit timing. The actual achievable frequency depends on supply voltage and temperature, with full 20 MHz operation specified at VDD ≥ 4.5 V.
Does the MC908AZ32ACFUER include built-in EEPROM memory?
No, the MC908AZ32ACFUER does not include on-chip EEPROM. It features 32 KB of Flash memory for program storage and 1 KB of RAM for runtime data, but nonvolatile data storage requires either Flash emulation techniques or external serial EEPROM. Alternative parts like MC9S08DZ32F2 do integrate EEPROM, making them preferable when frequent parameter writes are needed.
What debug interface does the MC908AZ32ACFUER support?
The MC908AZ32ACFUER supports Background Debug Mode (BDM) via a single-wire interface using the BKGD pin. This allows full in-circuit debugging - including breakpoints, register inspection, and Flash programming - without halting real-time peripheral operation. BDM is compatible with standard Freescale/NXP BDM debuggers and integrated development environments such as CodeWarrior for HCS08.
Can the MC908AZ32ACFUER operate from a 12 V automotive battery directly?
No, the MC908AZ32ACFUER cannot connect directly to a 12 V battery. Its absolute maximum supply voltage is 6.5 V, and recommended operating range is 2.7–5.5 V. Automotive applications require a pre-regulated 5 V or 3.3 V supply, typically provided by a switching or linear regulator (e.g., MC33FS4500). The device's wide input range simplifies compatibility with common regulated rails in vehicle ECUs.
Is the MC908AZ32ACFUER pin-compatible with other HCS08 devices?
The MC908AZ32ACFUER uses a unique 64-pin QFP package with specific pin assignments defined in its datasheet. While it shares the HCS08 architecture with other family members, it is not pin-compatible with MC9S08DZ32F2 (64-pin LQFP, different pinout) or S9KEAZ32AMLC (64-pin LQFP, ARM-based, incompatible signal mapping). PCB layout must be designed specifically for MC908AZ32ACFUER.
MC908AZ32ACFUER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-QFP
- Series:
- HC08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Programmable:
- Not Verified
- Core Processor:
- HC08
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- CANbus, SCI, SPI
- Peripherals:
- LVD, POR, PWM
- Number of I/O:
- 40
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 512 x 8
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 4.5V ~ 5.5V
- Data Converters:
- A/D 15x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC908AZ32ACFUER FAQ
1.How can I place an order for MC908AZ32ACFUER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC908AZ32ACFUER 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 MC908AZ32ACFUER reliable?
The price and inventory of MC908AZ32ACFUER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC908AZ32ACFUER is usually 5 days.
3.What payment methods are accepted for MC908AZ32ACFUER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC908AZ32ACFUER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC908AZ32ACFUER?
MC908AZ32ACFUER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC908AZ32ACFUER 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 MC908AZ32ACFUER?
For technical support, including MC908AZ32ACFUER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC908AZ32ACFUER requirements.
6.How does Aetrix verify that MC908AZ32ACFUER is sourced from the original manufacturer or authorized distributors?
All MC908AZ32ACFUER 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 MC908AZ32ACFUER meets industry standards.
7.What is the process for return or replacement of MC908AZ32ACFUER?
All MC908AZ32ACFUER units undergo pre-shipment inspection (PSI). If there is an issue with MC908AZ32ACFUER, 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 MC908AZ32ACFUER part is unused and in its original packaging.
Return procedure for MC908AZ32ACFUER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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