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NXP Semiconductors MC9S08AC32CPUE
- Part No.:
- MC9S08AC32CPUE
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
MC9S08AC32CPUE.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,010
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Product details
Overview
MC9S08AC32CPUE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller featuring a 40-MHz CPU core, 32 KB on-chip FLASH memory, and 2 KB RAM. It integrates dual SCI modules supporting LIN 2.0, a 16-channel 10-bit ADC, two SPI/I²C interfaces, and six-channel TPM with PWM capability - deployed in automotive body control modules, industrial sensor nodes, and smart appliance controllers.
For engineers reviewing the MC9S08AC32CPUE datasheet, MC9S08AC32CPUE pinout, MC9S08AC32CPUE application, or MC9S08AC32CPUE equivalent, key selection criteria include its 32-pin LQFP package, 20-MHz bus frequency, COP watchdog with independent 1-kHz clock source, low-voltage detection interrupt/reset, and hardware CRC module for memory integrity verification.
Technical Context
The MC9S08AC32CPUE implements the S08CPUV2 core with HC08 instruction set extension including BGND, executing at up to 40 MHz while sustaining 20 MHz internal bus speed. Its memory subsystem includes 32 KB FLASH with block protection and security options, plus 2 KB RAM with retention in Stop2/Stop3 modes.
Peripherals are tightly coupled to the I/O subsystem: dual SCI modules support master/slave extended break for LIN compliance; the 10-bit ADC supports hardware-triggered conversions and automatic compare; and the TPM modules offer buffered edge-aligned and centered PWM with up to six channels per module - all configurable via dedicated control registers without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | HCS08 S08CPUV2 with BGND instruction and 40-MHz max operation |
| FLASH Memory | 32 KB with security lock, block protection, and 512-byte erase sectors |
| RAM Size | 2 KB with stop-mode retention for critical state preservation |
| ADC Resolution | 10-bit SAR converter with 16 input channels and auto-compare function |
| SCI Modules | Two independent serial interfaces supporting LIN 2.0 and SAE J2602 protocols |
| Timer/PWM | Two 2-channel + one 6-channel TPM modules with selectable input capture/output compare |
| Package | 32-pin low-profile quad flat package (LQFP), RoHS-compliant, lead-free |
Pinout & Package
MC9S08AC32CPUE is housed in a 32-pin LQFP (Low-Profile Quad Flat Package) with 0.8 mm pitch, 7 mm × 7 mm body size, and exposed thermal pad (non-electrical). Pin assignments follow Freescale's standard HCS08 pin mapping for 32-pin variants, with dedicated VDD/VSS pairs, analog power (VDDAD/VSSAD), reference pins (VREFH/VREFL), and multiplexed peripheral I/O.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS (x2) | Power supply and ground | Dual VDD/VSS pair ensures stable core and I/O rail decoupling; separate VDDAD/VSSAD isolates analog domain |
| XTAL / EXTAL | Crystal oscillator inputs | Supports external crystal (1–8 MHz) or ceramic resonator; internal trimming enables ±2% accuracy over temperature |
| RESET | Active-low reset input | Internal pullup eliminates external resistor; accepts power-on reset, COP timeout, or LVD event as assertion sources |
| BKGD/MS | Background debug and mode select | Single-pin BDM interface enables in-circuit debugging without dedicated JTAG; supports single breakpoint and ICE FIFO trace |
| VREFH / VREFL | Analog reference terminals | Accept external reference or internal bandgap (1.2 V); enable ratiometric ADC measurements independent of supply variation |
| AD0–AD15 | Analog input channels | 16 multiplexed pins shared with GPIO; software-selectable gain and sample time per channel |
| PTA0–PTA7, PTB0–PTB7, PTC0–PTC7, PTD0–PTD7 | General-purpose I/O ports | Four 8-bit ports with per-pin slew rate, drive strength, and pullup control - configurable for peripheral alternate functions |
Key Features
| Feature | Design Value |
|---|---|
| Hardware CRC Module | 16-bit shift-register-based CRC engine accelerates memory checksum validation in <1 µs per 64-bit word |
| Low-Voltage Detection | Configurable trip points (2.5 V / 2.8 V / 3.0 V) with interrupt or reset output - critical for brown-out recovery in automotive environments |
| Background Debug System | On-chip ICE with 8-deep FIFO stores flow-change addresses and event data, enabling non-intrusive runtime analysis |
| Peripheral Clock Gating | Individual enable/disable control per module (SCI, SPI, I²C, TPM) reduces active current by up to 40% when peripherals idle |
| Stop Mode Power Management | Stop2 and Stop3 modes draw <2 µA typical; real-time interrupt (RTI) remains active for periodic wake-up without full restart |
Applications
| Automotive Body Control Unit | Industrial Sensor Node |
|---|---|
Use Scenario: Centralized control of door locks, window lifts, mirror adjustment, and interior lighting in 12 V vehicle systems. IC Role / Device Role / Timing Role: Main MCU executing LIN slave protocol over SCI, managing PWM-driven motor drivers, and sampling analog sensor feedback (temperature, position). Use Value: Integrated LIN-compliant SCI eliminates external transceiver; hardware CRC ensures firmware integrity during OTA updates; low-power Stop3 mode extends battery life during vehicle sleep. | Use Scenario: Wireless-capable environmental monitor collecting temperature, humidity, and CO₂ via analog and digital sensors in factory settings. IC Role / Device Role / Timing Role: Sensor fusion hub interfacing ADC, I²C sensors, and SPI-connected RF transceiver; schedules periodic wake-ups using RTI. Use Value: 10-bit ADC with hardware trigger synchronizes sampling across multiple channels; programmable slew rate minimizes EMI in noisy industrial environments; 2 KB RAM retains calibration data across Stop2 cycles. |
| Smart Appliance Controller | Medical Diagnostic Handheld |
Use Scenario: Washing machine main board managing motor phase control, water level sensing, and user interface display. IC Role / Device Role / Timing Role: Real-time controller running PID loops via TPM-generated PWM, reading pressure/level sensors via ADC, and driving LED/LCD via GPIO. Use Value: Six-channel TPM supports simultaneous motor phase timing and buzzer tone generation; internal bandgap reference enables accurate ADC readings without external components. | Use Scenario: Portable blood glucose meter requiring precise analog front-end, secure firmware storage, and long battery life. IC Role / Device Role / Timing Role: Safety-critical data acquisition MCU performing calibrated ADC conversion, storing encrypted logs in protected FLASH, and signaling alerts via GPIO-driven buzzer/LED. Use Value: FLASH security options prevent unauthorized firmware extraction; illegal opcode detection triggers immediate reset on code corruption; LVD interrupt warns of impending power loss before data loss occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| S9KEAZ32AMLH | Kinetis E-series ARM Cortex-M0+ core; 32 KB FLASH, 4 KB RAM; higher performance but larger code footprint | Requires toolchain migration; lacks native LIN support - needs software stack implementation | Choose for future-proofing where ARM ecosystem compatibility and upgrade path matter more than LIN hardware acceleration |
| MC9S08AW32CPUE | Same HCS08 core, identical 32-pin LQFP package, but adds CAN 2.0B controller and enhanced ADC features | Direct drop-in replacement only if CAN interface is unused; otherwise requires CAN transceiver and layout changes | Prefer when system-level CAN communication is planned - retains full software compatibility while adding bus capability |
Compared with MC9S08AC32CPUE, S9KEAZ32AMLH offers higher throughput but increases BOM complexity and firmware development effort, whereas MC9S08AW32CPUE preserves full pin and code compatibility while extending functionality - making it the optimal upgrade path for LIN-only designs needing future CAN readiness.
Availability
MC9S08AC32CPUE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance controllers, and portable medical diagnostics requiring stable component supply and long-term lifecycle assurance.
Supply support for MC9S08AC32CPUE 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 applications, formed from the spin-off and acquisition of Freescale Semiconductor in 2015.
The MC9S08AC32CPUE belongs to the HCS08 family - designed specifically for cost-sensitive, low-power embedded control applications demanding high reliability, integrated LIN support, and robust memory protection in harsh electrical environments.
FAQ
What is the maximum operating frequency of the MC9S08AC32CPUE CPU core?
The MC9S08AC32CPUE CPU core operates at up to 40 MHz, delivering 20 MHz bus frequency. This timing is achieved using the internal clock generator with precision NVM trimming, allowing stable operation across voltage (2.7–5.5 V) and temperature (−40°C to +105°C) ranges without external crystal dependency - essential for automotive and industrial deployments where oscillator stability is critical. The MC9S08AC32CPUE maintains full instruction compatibility with earlier HC08 devices while adding BGND for background debugging.
Does the MC9S08AC32CPUE support LIN 2.0 communication natively?
Yes, the MC9S08AC32CPUE supports LIN 2.0 natively through its dual SCI modules, which implement master extended break generation and slave extended break detection per SAE J2602. Each SCI includes dedicated LIN control bits and automatic synchronization to the master header, eliminating need for bit-banging or external LIN transceivers in basic implementations. The MC9S08AC32CPUE also provides hardware-assisted checksum calculation and error detection - reducing CPU load during frame processing in automotive sub-networks.
What power-saving modes does the MC9S08AC32CPUE offer, and what is the lowest current draw?
The MC9S08AC32CPUE supports Wait mode and two Stop modes (Stop2 and Stop3). In Stop3 mode, typical current draw is less than 2 µA at 3.3 V and 25°C, with RTC and RTI remaining active for timed wake-up. RAM contents are retained, and selected I/O states preserved. The MC9S08AC32CPUE achieves this ultra-low power via clock gating, peripheral disable, and deep-sleep register retention - validated in Freescale's Application Note AN3725 for automotive sleep-cycle compliance.
How is FLASH memory protected against unauthorized access or accidental overwrite on the MC9S08AC32CPUE?
The MC9S08AC32CPUE implements multi-layer FLASH protection: block-level write/erase protection via FPROT register, security byte locking in non-volatile options (FOPT/NVOPT), and flash security activation that disables background debug access upon reset. Once secured, reprogramming requires mass erase - preventing firmware extraction or tampering. The MC9S08AC32CPUE also supports vector redirection to allow custom bootloaders while maintaining protected application space - critical for certified automotive and medical firmware.
What is the role of the hardware CRC module in the MC9S08AC32CPUE, and which standards does it support?
The MC9S08AC32CPUE includes a dedicated 16-bit CRC module compliant with ITU-T (CCITT) X.25 and ISO 3309 standards, using polynomial 0x1021. It accelerates checksum computation over memory blocks or message buffers in hardware, completing CRC-16 in one cycle per byte - enabling fast firmware image validation, EEPROM integrity checks, and LIN message CRC generation. The MC9S08AC32CPUE CRC engine operates independently of the CPU, freeing bandwidth for real-time tasks while ensuring deterministic execution time.
MC9S08AC32CPUE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 64-LQFP
- Series:
- S08
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- 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:
MC9S08AC32CPUE FAQ
1.How can I place an order for MC9S08AC32CPUE through Aetrix?
Please submit a Request for Quotation (RFQ) for MC9S08AC32CPUE 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 MC9S08AC32CPUE reliable?
The price and inventory of MC9S08AC32CPUE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC9S08AC32CPUE is usually 5 days.
3.What payment methods are accepted for MC9S08AC32CPUE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC9S08AC32CPUE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC9S08AC32CPUE?
MC9S08AC32CPUE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC9S08AC32CPUE 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 MC9S08AC32CPUE?
For technical support, including MC9S08AC32CPUE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC9S08AC32CPUE requirements.
6.How does Aetrix verify that MC9S08AC32CPUE is sourced from the original manufacturer or authorized distributors?
All MC9S08AC32CPUE 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 MC9S08AC32CPUE meets industry standards.
7.What is the process for return or replacement of MC9S08AC32CPUE?
All MC9S08AC32CPUE units undergo pre-shipment inspection (PSI). If there is an issue with MC9S08AC32CPUE, 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 MC9S08AC32CPUE part is unused and in its original packaging.
Return procedure for MC9S08AC32CPUE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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