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NXP Semiconductors MC9S08AC32CFUER
- Part No.:
- MC9S08AC32CFUER
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-QFP
- Datasheet:
-
MC9S08AC32CFUER.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64QFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
MC9S08AC32CFUER from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB flash, 2 KB RAM, and a 40-MHz CPU core operating at up to 20-MHz bus frequency. It integrates dual SCI modules supporting LIN 2.0, two SPI, one I²C, 16-channel 10-bit ADC, and six-channel TPM for motor control in automotive body electronics.
For engineers reviewing the MC9S08AC32CFUER datasheet, MC9S08AC32CFUER pinout, MC9S08AC32CFUER application, or MC9S08AC32CFUER equivalent, key selection criteria include QFN-48 copper-wire package compatibility, on-chip background debug support, COP watchdog with independent 1 kHz clock source, and CRC hardware acceleration for firmware integrity verification.
Technical Context
The MC9S08AC32CFUER implements the S08CPUV2 core with HC08 instruction set extension including BGND, enabling in-circuit debugging via single-wire BKGD/MS interface. Its internal clock generator (ICG) supports precision NVM-trimmed internal reference with crystal/resonator/external clock options.
Peripherals are memory-mapped and share a unified 16-bit address space. The device supports three low-power modes-Wait, Stop2, and Stop3-with configurable LVD reset/interrupt, real-time interrupt (RTI), and active BDM during Stop modes for robust embedded control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 S08CPUV2, 40-MHz max core frequency, 20-MHz bus clock - enables deterministic real-time response in safety-critical body control units. |
| Flash Memory | 32 KB on-chip FLASH with block protection and security options - supports field firmware updates and IP protection in production ECUs. |
| RAM | 2 KB on-chip RAM - sufficient for stack, variables, and buffer storage in LIN gateway or lighting control applications. |
| ADC | 16-channel, 10-bit SAR ADC with automatic compare and temperature sensor input - enables analog sensor monitoring without CPU intervention. |
| SCI Modules | Two serial communication interfaces supporting LIN 2.0 and SAE J2602 - allows dual-bus connectivity for door module or seat control networks. |
| Package | 48-pin QFN (98ASA00466D), copper-wire bonded, exposed thermal pad - provides compact footprint and enhanced thermal performance over legacy gold-wire variants. |
| Debug Interface | Single-wire Background Debug Mode (BDM) with breakpoint capability and 8-deep FIFO trace - enables non-intrusive development and validation on target hardware. |
Pinout & Package
MC9S08AC32CFUER is housed in a 48-pin QFN package (case outline 98ASA00466D) with 0.5 mm pitch and exposed thermal pad. This copper-wire bonded variant replaces earlier gold-wire versions (98ARL10606D) and requires adherence to EB806 guidelines for exposed pad soldering and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply and ground | Dual-domain supply: VDD powers digital logic; VSS serves as common return for all circuits including analog peripherals. |
| VDDAD, VSSAD | Analog power and ground | Isolated analog domain supply pins reduce noise coupling into ADC and internal reference circuits. |
| XTAL / EXTAL | Clock oscillator inputs | Supports external crystal/resonator up to 8 MHz or external clock source for precise timing in LIN baud rate generation. |
| BKGD/MS | Background debug and mode select | Single-wire debug interface; pulled high internally to enable active BDM during reset and Stop modes. |
| RESET | Master reset input | Active-low, internally pulled up; accepts external reset signals and triggers COP/LVD-induced resets. |
| IRQ | External interrupt request | Edge-triggered interrupt input with internal pullup; used for wake-up from Stop modes or asynchronous event handling. |
| VREFH / VREFL | ADC reference voltage terminals | Accept external reference or connect to internal bandgap; define full-scale range for 10-bit conversion accuracy. |
| PTA0–PTA7 | Port A general-purpose I/O | 8-bit port with software-selectable pullups, slew rate, and drive strength - configurable for LIN TX/RX, PWM outputs, or GPIO. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC Module | 16-bit shift register implementation accelerates memory checksums for boot loader validation and flash integrity checks. |
| On-Chip COP Watchdog | Configurable timeout with independent 1 kHz internal clock source - ensures fail-safe recovery even if main clock fails. |
| Low-Voltage Detect (LVD) | Programmable trip points (2.5 V / 2.7 V / 2.9 V) with reset or interrupt output - prevents erratic operation during brown-out conditions. |
| TPM Timer/PWM | Three timer modules (two 2-channel + one 6-channel) with edge-aligned and centered PWM - supports motor speed control and LED dimming. |
| SCI LIN Support | Master extended break generation and slave extended break detection per LIN 2.0 spec - eliminates need for external LIN transceivers in basic implementations. |
Applications
| Automotive Door Module | Seat Position Control |
|---|---|
Use Scenario: Centralized control of power windows, locks, mirrors, and interior lighting via LIN network. IC Role / Device Role / Timing Role: Primary MCU managing LIN slave communication, ADC-based switch sensing, and PWM-driven motor drivers. Use Value: Integrated dual SCI modules eliminate external LIN transceivers; 16-channel ADC monitors multiple tactile switches and potentiometers simultaneously. | Use Scenario: Real-time adjustment of seat position using motor feedback and occupant weight sensing. IC Role / Device Role / Timing Role: Motor controller with current-sense ADC inputs, PWM outputs, and CAN/LIN gateway functionality. Use Value: Six-channel TPM enables simultaneous control of multiple seat motors; hardware CRC validates configuration data stored in flash. |
| Body Control Unit (BCU) | LED Lighting Driver |
Use Scenario: Consolidated control of exterior lighting, wipers, horn, and HVAC actuators in entry-level vehicles. IC Role / Device Role / Timing Role: Main system controller interfacing with LIN slaves, executing diagnostics, and managing power states. Use Value: 54 GPIO pins support direct connection to relays and sensors; Stop3 mode reduces quiescent current to <1 µA for battery-sensitive applications. | Use Scenario: Adaptive interior lighting with dimming, color mixing, and fault reporting. IC Role / Device Role / Timing Role: PWM generator and thermal monitor using integrated ADC and temperature sensor. Use Value: Center-aligned PWM minimizes EMI; on-chip temperature sensor enables closed-loop thermal derating without external components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC9S08AC48CFUER | 48 KB flash, same QFN-48 package and peripheral set - differs only in program memory size. | Preferred where larger bootloader or diagnostic code space is required without changing PCB layout. | Select when future firmware expansion headroom is needed; identical pinout and debug interface simplify migration. |
| S9KEAZ32AMLH | Kinetis E-series ARM Cortex-M0+ core, 32 KB flash, QFN-48 - higher performance but different architecture and toolchain. | Suitable for next-generation designs requiring RTOS support or higher throughput, not drop-in replacement. | Choose for new designs targeting scalability; requires full software re-architecture and validation effort. |
Compared with MC9S08AC48CFUER, the MC9S08AC32CFUER offers identical peripherals and package but reduced flash for cost-sensitive volume applications; versus S9KEAZ32AMLH, it delivers proven HCS08 reliability and LIN-optimized firmware stacks at lower BOM cost.
Availability
MC9S08AC32CFUER is available at Aetrix Electronics and suitable for automotive body electronics, LIN gateway modules, and industrial motor control applications requiring stable component supply across multi-year production cycles.
Supply support for MC9S08AC32CFUER 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, IoT, and communication infrastructure solutions, with deep heritage in microcontroller innovation through its acquisition of Freescale.
The MC9S08AC32CFUER belongs to the HCS08 family designed specifically for cost-sensitive, functionally safe automotive body electronics - emphasizing LIN compliance, low-power operation, and robust debug capabilities in harsh environments.
FAQ
What is the package type and thermal pad configuration for MC9S08AC32CFUER?
The MC9S08AC32CFUER uses a 48-pin QFN package (case outline 98ASA00466D) with copper wire bonding and an exposed thermal pad. Per Freescale EB806 guidelines, the pad must be soldered to a dedicated thermal plane on the PCB for optimal heat dissipation and electrical stability. This revision supersedes earlier gold-wire variants like 98ARL10606D.
Does MC9S08AC32CFUER support LIN 2.0 protocol natively?
Yes, MC9S08AC32CFUER supports LIN 2.0 natively through its dual SCI modules, which implement master extended break generation and slave extended break detection per SAE J2602. No external LIN transceiver is required for basic node functionality, though physical layer compliance depends on external driver circuitry.
What debug capabilities does MC9S08AC32CFUER provide?
MC9S08AC32CFUER features a single-wire Background Debug Mode (BDM) interface with breakpoint support, 8-deep FIFO for trace capture, and active debugging during Wait and Stop modes. It includes two comparators and nine trigger modes in the on-chip ICE module, enabling non-intrusive firmware validation in automotive environments.
How does the COP watchdog operate independently of the main clock in MC9S08AC32CFUER?
The COP watchdog in MC9S08AC32CFUER can be configured to run from an independent 1 kHz internal clock source, ensuring continued supervision even if the main system clock fails or becomes unstable. This feature is critical for automotive safety compliance and is enabled via the SOPT register's COPCLKS bit.
Can MC9S08AC32CFUER operate in ultra-low-power modes for battery-powered automotive accessories?
Yes, MC9S08AC32CFUER supports Stop3 mode with typical current consumption below 1 µA when configured with LVD disabled and RTC inactive. Combined with IRQ wake-up and internal pullups on key pins, it enables long-term operation in battery-backed modules such as keyless entry receivers or tire pressure monitor sensors.
MC9S08AC32CFUER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-QFP
- Series:
- S08
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- S08
- Core Size:
- 8-Bit
- Speed:
- 40MHz
- Connectivity:
- I2C, SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 54
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 16x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MC9S08AC32CFUER FAQ
1.How can I place an order for MC9S08AC32CFUER through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08AC32CFUER 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 MC9S08AC32CFUER reliable?
The price and inventory of MC9S08AC32CFUER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08AC32CFUER is usually 5 days.
3.What payment methods are accepted for MC9S08AC32CFUER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08AC32CFUER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08AC32CFUER?
MC9S08AC32CFUER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08AC32CFUER 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 MC9S08AC32CFUER?
For technical support, including MC9S08AC32CFUER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08AC32CFUER requirements.
6.How does Aetrix verify that MC9S08AC32CFUER is sourced from the original manufacturer or authorized distributors?
All MC9S08AC32CFUER 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 MC9S08AC32CFUER meets industry standards.
7.What is the process for return or replacement of MC9S08AC32CFUER?
All MC9S08AC32CFUER units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08AC32CFUER, 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 MC9S08AC32CFUER part is unused and in its original packaging.
Return procedure for MC9S08AC32CFUER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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