MC9S08AW32CFDE - S08 8-bit MCU, 32KB Flash, 40MHz | NXP
MPN: MC9S08AW32CFDE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.58 | $4.58 |
| 10 | $4.28 | $42.80 |
| 100 | $3.96 | $396.00 |
| 500 | $3.62 | $1,810.00 |
| 1,000 | $3.31 | $3,310.00 |
MC9S08AW32CFDE Overview
An 8-bit microcontroller is a single-chip computer that integrates a CPU core, program memory (Flash), data RAM, and peripherals such as timers, ADCs, and serial communication interfaces on one die. In the embedded-systems hierarchy, the MC9S08AW32 sits within the general-purpose MCU class: microcontroller -> embedded processor -> semiconductor IC. The S08AW family is positioned for cost-sensitive industrial and automotive designs where 5V operation and robust EMC behavior matter more than raw processing power.
Key features include the enhanced S08 CISC core clocked at 40 MHz, 32KB (32K x 8) of on-chip Flash program memory, a 10-bit ADC operating from a 2.7V to 5.5V supply, and industrial temperature support. The exposed-pad QFN package improves thermal performance and ground integrity for electromagnetic compatibility, a requirement the family explicitly targets for industrial and automotive deployments.
Architecturally, the device uses the S08 core with background debug capability and a comprehensive peripheral set typical of the AW family, including serial interfaces and timer modules. The wide 2.7V to 5.5V operating range allows direct connection to automotive 5V rails and 3.3V logic systems without level translation.
Typical applications include industrial control and automation nodes, automotive body electronics and sensor interfaces, motor control auxiliaries, and consumer appliances. The 5V-tolerant, high-EMC design fits electrically noisy factory and vehicle environments where 3.3V-only MCUs are marginal.
Design consideration: the part is listed NRND (Not Recommended for New Designs) by NXP, so new designs should evaluate the family roadmap and pin-compatible alternatives before committing.
This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MC9S08AW32CFDE — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MC9S08AW32CFDE (same form factor and footprint) — differing in Package, Supply Voltage Range, Debug Interface, Family, Instruction Set.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08AW48CFDE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.02 / Unit
View Datasheet →MC9S08AW60CFDE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.43 / Unit
View Datasheet →MC9S08AW16CFDE
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.78 / Unit
View Datasheet →S9S08AW32MFDE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08GT32ACFBE
✅ Drop-In✓ In Stock
$2.75 / Unit
View Datasheet →MC9S08AW32CFDE Maximum Ratings & Electrical Characteristics
| Core Processor | S08 |
| Core Size | 8-Bit |
| Architecture | CISC |
| Maximum Clock Frequency | 40 MHz |
| Flash Memory | 32KB (32K x 8) |
| ADC Resolution | 10-bit |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Package | 48-QFN-EP (7x7 mm) |
| Mounting Type | Surface Mount |
| Number of Terminals | 48 |
| Package Code | VQCCN (square, no-lead) |
| Temperature Grade | Industrial |
| Program Memory Type | FLASH |
| Family | HCS08 / S08AW |
| Lifecycle Status | NRND (Not Recommended for New Designs) |
| Target Industries | Industrial and Automotive |
MC9S08AW32CFDE vqccn (square, no-lead) Pin Configuration Guide
Pin configuration for MC9S08AW32CFDE (vqccn (square, no-lead) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for MC9S08AW32CFDE.
Refer to the datasheet for full pin configuration.
Typical Applications
MC9S08AW32CFDE is suitable for 6 applications: Industrial Control and Automation, Automotive Body Electronics, Motor Control Auxiliary Logic, Sensor Interfaces and Data Acquisition, Home Appliance Control, Legacy System Maintenance and Last-Time-Buy.
Industrial Control and Automation
The MC9S08AW32CFDE fits industrial control nodes because NXP designed the S08AW family explicitly for the industrial market with 5V operation, electromagnetic compatibility features, and the robust S08 core at 40 MHz. In a typical PLC I/O module or sensor node, the MCU reads analog inputs through its 10-bit ADC, executes deterministic control logic in the 32KB Flash program, and drives actuators or fieldbus transceivers through its timer and serial peripherals. The 2.7V to 5.5V supply range lets the device run directly from industrial 5V rails without regulators, and the 48-QFN exposed-pad package provides a solid ground reference that improves noise immunity on electrically noisy factory floors. Because the part is NRND, use it for maintenance of existing installations and prefer active family members for new industrial designs.
Recommended
Automotive Body Electronics
NXP states the MC9S08AW family supports the automotive industry with 5V operational voltage, electromagnetic compatibility, and the high-performance S08 8-bit core, making the AW32 suited to body-control functions such as window lifter modules, seat adjusters, lighting control, and wiper controllers. The 40MHz core provides sufficient throughput for switch debouncing, PWM lamp dimming, and motor sequencing, while the 10-bit ADC conditions resistive or Hall-effect position sensors. The 48-QFN exposed-pad package aids thermal dissipation and EMC in the confined, vibration-prone environment of automotive electronics. For new automotive designs, the automotive ordering-code variant S9S08AW32MFDE offers the same die under the automotive quality flow, and long-lifecycle support planning is essential given the NRND status of the standard part.
Recommended
Motor Control Auxiliary Logic
In fan, pump, and small-appliance motor systems, the MC9S08AW32CFDE serves as supervisory and PWM-generation logic: the S08 core at 40 MHz produces center-aligned PWM waveforms through its timer channels while the 10-bit ADC samples current shunts and temperature sensors for closed-loop supervision. The 32KB Flash accommodates commutation tables, fault-handling routines, and communication stacks simultaneously. The wide 2.7V to 5.5V operating range and 5V noise-tolerant I/O suit the electrically harsh environment near switching power stages, and the exposed-pad QFN grounds the controller firmly against switching-induced ground bounce. Designs should verify ADC sampling rate against the loop bandwidth requirement in the S08AW reference manual, and should treat the NRND status as a signal to qualify MC9S08AW48CFDE as a code-compatible successor.
Recommended
Sensor Interfaces and Data Acquisition
The MC9S08AW32CFDE works well as a local sensor-conditioning and acquisition controller: its integrated 10-bit ADC digitizes transducer outputs across the 2.7V to 5.5V supply span, allowing direct interface with 5V industrial sensors or 3.3V low-power sensors without external level shifting. The 32KB Flash stores per-sensor calibration tables and linearization curves, while serial peripherals stream corrected data to a host controller or converter. The 48-QFN-EP (7x7 mm) package keeps the acquisition node compact enough for dense sensor PCBs, and the exposed pad provides a low-impedance analog ground that protects ADC accuracy from digital switching noise. For higher-resolution needs, pair the MCU with an external ADC; for new designs, verify successor-family ADC specifications since this part is NRND.
Recommended
Home Appliance Control
Cost-sensitive appliance controls - washing machine user panels, rice cooker logic, vacuum system controllers - match the MC9S08AW32CFDE positioning as a member of the low-cost, high-performance HCS08 family. The 40MHz S08 core handles touch or mechanical key scanning, display multiplexing, and relay timing concurrently, while the 10-bit ADC reads thermistors and level sensors. Operating directly from a 5V appliance supply with the 2.7V to 5.5V range removes a regulator stage and its cost, and the high-EMC design helps pass residential interference requirements near motor and relay loads. The 48-QFN exposed-pad package supports compact two-layer control boards that keep bill-of-material cost low. For new appliance platforms, engineers should select an active S08 successor given the NRND lifecycle status of this part.
Recommended
Legacy System Maintenance and Last-Time-Buy
The primary remaining application for MC9S08AW32CFDE is sustaining engineering: repair, refurbishment, and spare-part production for shipped products designed around the AW32. Because NXP lists the part NRND, procurement teams should compute end-of-life exposure, place last-time-buy orders through authorized and independent distributors (DigiKey marketplace sellers such as Flip Electronics and Rochester Electronics list the part), and qualify the pin-compatible MC9S08AW48CFDE or AW60 as drop-in successors that reuse the existing 48-QFN-EP footprint and most firmware. A structured migration reuses the PCB unchanged, revalidates only the Flash-size-dependent linker settings, and avoids a full board respin. This part page consolidates availability, pricing, and cross-reference data to support exactly that lifecycle decision.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08AW32CFDE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08AW48CFDE | MC9S08AW60CFDE | MC9S08AW16CFDE | S9S08AW32MFDE | MC9S08GT32ACFBE |
|---|---|---|---|---|---|---|
| Package | 48-QFN-EP (7x7 mm) | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-QFN-EP (7x7 mm) - same | 48-QFN (7x7 mm) - same footprint, verify pinout |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors (Freescale legacy code) | NXP Semiconductors |
| Core / Clock | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz | S08 8-bit, 40 MHz |
| Flash Memory | 32KB | 48KB | 60KB | 16KB | 32KB | 32KB |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit | 10-bit |
| Market Positioning | Industrial + Automotive general purpose | Industrial + Automotive general purpose | Industrial + Automotive general purpose | Industrial + Automotive general purpose | Automotive ordering code | Low-cost general purpose |
Key Differentiators
- Automotive ordering-code sibling with identical die (vs S9S08AW32MFDE)
- Flash headroom upgrade without respin (vs MC9S08AW48CFDE)
- Cost and code-size floor within the family (vs MC9S08AW16CFDE)
Design Notes
The MC9S08AW32CFDE is NRND per NXP's official product page. Do not start new designs on this exact ordering code. Before committing a PCB, qualify MC9S08AW48CFDE or MC9S08AW60CFDE, which share the 48-QFN-EP footprint and S08 peripherals, so migration is a firmware recompile rather than a board respin. Also confirm whether your supply chain can source the automotive S9S08AW32MFDE code, which Findchips lists as the direct comparator for the same die.
The device operates from 2.7V to 5.5V, enabling direct connection to 5V industrial or automotive rails. Decouple each supply pin with 100nF ceramic capacitors placed within a few millimeters of the pin, and use the exposed pad as the primary low-impedance ground connection - solder it to a solid ground plane with an array of vias. When running from an unregulated automotive supply, add transient suppression upstream because 5V jump-start and load-dump conditions can exceed the absolute maximum rating.
For the 48-QFN-EP (7x7 mm) no-lead package, keep the ADC analog ground return separated from high-current digital returns until they meet at the exposed-pad via array. Route the 10-bit ADC input traces short and away from 40MHz clock lines to preserve effective resolution. Verify the thermal pad land pattern against the manufacturer's recommended footprint before fabrication, since exposed-pad QFN reliability depends on correct stencil design of the pad paste.
Compliance Information
The NXP product page lists an Environmental Quality section but the provided web data does not include specific RoHS/REACH values for this ordering code. Verify compliance certificates on the NXP part page before procurement.