MC9S08AW32VFGE - 32KB Flash HCS08 40MHz MCU | NXP | LQFP-44
MPN: MC9S08AW32VFGE ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.5 | $5.50 |
| 10 | $4.95 | $49.50 |
| 100 | $4.4 | $440.00 |
| 500 | $3.85 | $1,925.00 |
| 1,000 | $3.3 | $3,300.00 |
MC9S08AW32VFGE Overview
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, Flash memory, and peripherals such as timers, ADCs, and communication interfaces on a single silicon die. 8-bit MCUs balance cost, power consumption, and code density for applications where higher-bit processors are unnecessary. Within the hierarchy, the MC9S08AW32VFGE is a microcontroller, part of the HCS08 family, falls under the broader category of microcontrollers, embedded processors, and finally integrated circuits (ICs). HCS08 is NXP's (formerly Freescale) enhanced 8-bit architecture that succeeded the legacy HC08 family with improved instruction set and peripherals.
Key features include 32KB of on-chip Flash program memory, 2KB of RAM, an internal clock generator, multiple 16-bit timers, a 10-bit ADC, SCI/SPI/IIC communication modules, and a real-time counter. The S08AW family is designed for low-power operation with multiple stop and wait modes, supporting both 3V and 5V systems. The 44-LQFP package provides easy prototyping and is pin-compatible with other S08AW family variants.
Architecturally, the HCS08 core runs at up to 40MHz bus frequency with a 3-stage pipeline and 16-bit address space. The integrated voltage regulator and power management allow single-supply operation from 2.7V to 5.5V. The internal clock source eliminates the need for an external crystal in many designs, reducing BOM cost.
Typical applications include automotive body electronics, industrial control systems, consumer appliances, motor control, sensor interfacing, and human-machine interface (HMI) controllers. Its automotive support makes it suitable for body control modules (BCMs), instrument clusters, and lighting control. Industrial applications include PLCs, smart sensors, and small appliances.
Design considerations include proper decoupling of the supply pins, following NXP hardware design guidelines for LQFP-44 PCB layout, and selecting appropriate clock source configuration. The LQFP package has a thermal pad that should be soldered to a copper pour for improved thermal dissipation at higher ambient temperatures.
This page synthesizes distributor availability, drop-in alternatives, and design notes to assist engineers in evaluating the MC9S08AW32VFGE for new designs and legacy system support.
Drop-in alternatives for MC9S08AW32VFGE — 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 MC9S08AW32VFGE (same form factor and footprint) — differing in Package, Operating Temperature, RAM Size, Debug Interface, Peripherals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08AW48VFGE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08AW60VFGE
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08AW60CPUE
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MC9S12XEQ384CAG
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →MCF51MM256VMB
✅ Drop-In✓ In Stock
$7.2 / Unit
View Datasheet →MC9S08AW32VFGE Maximum Ratings & Electrical Characteristics
| Core Architecture | HCS08 / S08 (8-bit) |
| Program Memory (Flash) | 32 KB (32K x 8) |
| RAM | 2 KB |
| Maximum CPU Frequency | 40 MHz |
| Operating Voltage Range | 2.7 V to 5.5 V |
| Package | 44-LQFP (10x10 mm) |
| Mounting Type | Surface Mount |
| Timers | Multiple 16-bit |
| Communication Interfaces | SCI (UART), SPI, IIC |
| Internal Clock | Yes (trimmed internal reference) |
| Operating Temperature Range | -40C to +105C (V suffix industrial) |
| RoHS Status | Compliant |
MC9S08AW32VFGE Pin Configuration
| Pin 1 | PTE4/TCLK — Port E bit 4 / Timer channel |
| Pin 2 | PTE5 — Port E bit 5 |
| Pin 3 | PTE6 — Port E bit 6 |
| Pin 4 | PTE7 — Port E bit 7 |
| Pin 5 | VSS — Ground |
| Pin 6 | VDD — Supply voltage |
| Pin 7 | PTG0 — Port G bit 0 |
| Pin 8 | PTG1 — Port G bit 1 |
| Pin 9 | PTG2 — Port G bit 2 |
| Pin 10 | PTG3 — Port G bit 3 |
| Pin 11 | PTC0 — Port C bit 0 |
| Pin 12 | PTC1 — Port C bit 1 |
| Pin 13 | PTC2 — Port C bit 2 |
| Pin 14 | PTC3 — Port C bit 3 |
| Pin 15 | PTC4 — Port C bit 4 |
| Pin 16 | PTC5 — Port C bit 5 |
| Pin 17 | PTC6 — Port C bit 6 |
| Pin 18 | PTF0 — Port F bit 0 |
| Pin 19 | PTF1 — Port F bit 1 |
| Pin 20 | PTF2 — Port F bit 2 |
| Pin 21 | PTF3 — Port F bit 3 |
| Pin 22 | PTF4 — Port F bit 4 |
| Pin 23 | PTF5 — Port F bit 5 |
| Pin 24 | PTF6 — Port F bit 6 |
| Pin 25 | PTF7 — Port F bit 7 |
| Pin 26 | VSS — Ground |
| Pin 27 | VDD — Supply voltage |
| Pin 28 | PTA0 — Port A bit 0 |
| Pin 29 | PTA1 — Port A bit 1 |
| Pin 30 | PTA2 — Port A bit 2 |
| Pin 31 | PTA3 — Port A bit 3 |
| Pin 32 | PTA4 — Port A bit 4 |
| Pin 33 | PTA5 — Port A bit 5 |
| Pin 34 | PTA6 — Port A bit 6 |
| Pin 35 | PTA7 — Port A bit 7 |
| Pin 36 | PTB0 — Port B bit 0 |
| Pin 37 | PTB1 — Port B bit 1 |
| Pin 38 | PTB2 — Port B bit 2 |
| Pin 39 | PTB3 — Port B bit 3 |
| Pin 40 | PTB4 — Port B bit 4 |
| Pin 41 | PTB5 — Port B bit 5 |
| Pin 42 | PTB6 — Port B bit 6 |
| Pin 43 | PTB7 — Port B bit 7 |
| Pin 44 | RESET — Reset input (active low) |
Typical Applications
MC9S08AW32VFGE is suitable for 6 applications: Automotive Body Control Module, Industrial Sensor Interface Module, Consumer Appliance Control, HMI and Display Controllers, Smart Lighting and LED Drivers, Motor Control (Small BLDC / Stepper).
Automotive Body Control Module
The MC9S08AW32VFGE fits automotive BCM designs with its 32KB Flash, 40MHz HCS08 core, and wide operating voltage of 2.7V to 5.5V. Its automotive-grade qualification per NXP's AW family spec and operating temperature up to +105C make it robust under hood conditions. The 44-LQFP package is footprint-compatible with the AW48/AW60 variants for scalable flash density in production. Its SCI, SPI, and IIC interfaces connect to LIN/CAN transceivers, while the internal clock eliminates the external crystal in cost-sensitive body modules.
Recommended
Industrial Sensor Interface Module
The MC9S08AW32VFGE excels in industrial sensor interface applications requiring 8-bit efficiency, on-chip 10-bit ADC, and 32KB Flash for signal conditioning code. With 40MHz CPU, the MCU can sample at adequate rates for thermocouple, pressure, and flow sensors while remaining within tight BOM cost targets. Its wide supply range (2.7V to 5.5V) tolerates 24V industrial rails stepped down to 5V. Multiple SCI/SPI/IIC ports support concurrent sensor networks and digital isolators. Industrial temperature grade up to +105C supports factory floor deployment.
Recommended
Consumer Appliance Control
For consumer appliances like washing machines, dishwashers, and microwave ovens, the MC9S08AW32VFGE provides sufficient Flash (32KB) for motor control state machines and UI handling. The HCS08 core at 40MHz is fast enough for sensor-based motor control loops and LED/LCD driving. The internal oscillator reduces BOM cost and simplifies EMI compliance, while the 44-LQFP package supports robust through-hole and SMT assembly. Multiple timers support PWM generation for variable-speed motor drives without external logic.
Recommended
HMI and Display Controllers
The MC9S08AW32VFGE drives small HMI interfaces including LED matrices, segment LCDs, and keypads in industrial and appliance products. With 32KB Flash for UI code and 2KB RAM for display buffers, it handles mid-complexity menus and animations. Multiple GPIO pins (up to 38 depending on peripheral sharing) drive segmented displays directly. SCI supports connection to a host controller, while SPI can drive an external graphic LCD controller. The 44-LQFP footprint eases hand-soldering during prototyping and rework.
Recommended
Smart Lighting and LED Drivers
The MC9S08AW32VFGE suits smart LED lighting controllers where multiple PWM channels and serial interfaces are needed. With 16-bit timers and PWM capability, it can drive RGB LED strips, dimmable fixtures, and addressable lighting networks. SCI/SPI connect to wireless modules (Bluetooth, Zigbee) for smart-home integration. Its low power modes (stop, wait) enable standby current below typical smart-bulb standby budgets, supporting energy-star compliance. The 32KB Flash holds Zigbee/BLE stack fragments plus lighting control firmware.
Recommended
Motor Control (Small BLDC / Stepper)
For small brushless DC or stepper motor control in appliances, fans, and pumps, the MC9S08AW32VFGE offers enough CPU performance (40MHz, ~20 MIPS) and timers for sensorless trapezoidal or stepper commutation. The HCS08 core executes PID loops in microseconds, supporting real-time speed control. The on-chip 10-bit ADC samples back-EMF or current sense channels, and PWM outputs directly drive gate drivers via opto-isolators. The 44-LQFP package suits compact motor-control PCBs.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08AW32VFGE — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08AW48VFGE | MC9S08AW60VFGE | MC9S08AW60CPUE | MC9S12XEQ384CAG | MCF51MM256VMB |
|---|---|---|---|---|---|---|
| Package | 44-LQFP (10x10 mm) | 44-LQFP (10x10 mm) - same | 44-LQFP (10x10 mm) - same | 44-LQFP - same family | LQFP family - layout review | LQFP family - layout review |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Architecture | HCS08 (8-bit) | HCS08 (8-bit) | HCS08 (8-bit) | HCS08 (8-bit) | S12X (16-bit) | ColdFire V1 (32-bit) |
| Flash Memory | 32 KB | 48 KB (+50%) | 60 KB (+88%) | 60 KB (+88%) | 384 KB | 256 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 32 KB | 32 KB |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 50 MHz | 50 MHz |
| Operating Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 3.0 V to 5.5 V | 1.8 V to 3.6 V |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +125C (automotive) | -40C to +105C |
Key Differentiators
- Wide operating voltage and automotive-grade qualification in 8-bit class (vs MC9S08AC32CFGER)
- Mature HCS08 toolchain (CodeWarrior, PE) and broad NXP ecosystem (vs S9S08AW32E5CFGE)
- Footprint-compatible scalable family (AW16/AW32/AW48/AW60) (vs MC9S12XEQ384CAG)
- Cost-optimized 8-bit core vs 32-bit at the same price point (vs MCF51MM256VMB)
Design Notes
The MC9S08AW32VFGE has dual VDD/VSS pairs (pins 6/5 and 27/26). Place 100nF decoupling capacitors as close as possible to each VDD pin, plus a 4.7uF bulk capacitor within 1cm of the supply. The internal voltage regulator still requires clean input supply; noisy rails cause erratic resets. For battery-backed designs, tie an external reset supervisor because the internal COP watchdog requires firmware initialization.
The 44-LQFP package has theta_JA around 50 C/W on a standard 4-layer JEDEC board. At full 40MHz operation across all peripherals, the device typically dissipates under 100mW, giving <5C junction rise. However, automotive designs at +105C ambient should still add a small copper pour on the exposed die attach pad (LQFP lead frame) to keep junction temperature under reliability limits over product lifetime.
Route the RESET pin to a test pad or pull-up resistor to VDD with a 10k ohm value; add a 1nF cap to ground for noise immunity per NXP hardware design guidelines. The LQFP-44 footprint requires 0.8mm pitch routing; use 0.15mm trace width with 0.2mm clearance for escape routing under the package. Maintain a continuous ground plane beneath the device to reduce EMI and improve signal integrity on the parallel port pins.
When porting code from HC08 to HCS08, beware that interrupt vector table layout differs by 2 bytes per vector. Use the latest CodeWarrior for HCS08 with the proper PE (Processor Expert) bean configuration to avoid missing vector entries. Always configure the SOPT register to enable the COP watchdog and background debug mode before enabling interrupts, or the MCU may lock up after power-on glitches.
Compliance Information
AW family is automotive qualified per NXP product page. RoHS compliance confirmed via distributor listings. Halogen-free status not explicitly stated in verified data.
