MC9S08PT32VLF - 32KB Flash 8-bit S08 MCU, 48-LQFP | NXP
MPN: MC9S08PT32VLF ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.75 | $5.75 |
| 10 | $5.18 | $51.80 |
| 100 | $4.61 | $461.00 |
| 500 | $4.13 | $2,065.00 |
| 1,000 | $3.65 | $3,650.00 |
MC9S08PT32VLF Overview
What is an 8-bit microcontroller? An 8-bit MCU is an integrated circuit that combines a CPU with 8-bit data width, program memory, RAM, and a set of peripherals (timers, ADC, communication ports). The HCS08 core executes one instruction per clock cycle using an enhanced Harvard architecture and is part of the broader S08 microcontroller family, which sits within the larger hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The S08PT specifically targets cost-sensitive human-machine interface and motor-control nodes where low BOM cost and 5V tolerance outweigh the need for 32-bit throughput.
Key features of the MC9S08PT32VLF include a 20 MHz bus clock, 32KB Flash for application code, 256-byte EEPROM for non-volatile data, and a 12-channel 12-bit ADC for sensor interfacing. Communications are supported through one SCI (UART), one SPI, and one I2C peripheral, and the chip also provides a TSI module for capacitive touch electrodes and a 6-channel motor-control FTM. The 48-LQFP (7x7 mm) footprint gives access to 44 GPIO pins, suiting PCB layouts that demand wide parallel buses or multiple motor-drive PWM outputs.
From an architecture standpoint, the S08PT is built around a 16-bit address space with banking to address the 32KB Flash, while the CPU executes C and assembly binaries produced by CodeWarrior or the newer Eclipse-based MCUXpresso for S08 (formerly CodeWarrior). The integrated bandgap reference and on-chip voltage regulator feed analog and digital sections separately to reduce cross-domain noise, an important attribute when ADC sampling coincides with switching events on the FTM outputs. Internal ESD/EFT hardening gives the family above-average robustness for industrial appliances and white goods.
Typical applications for the MC9S08PT32VLF include capacitive-touch user interfaces in home appliances, small BLDC and brushed-DC motor controllers, low-cost sensor hubs, white-goods control boards, and HVAC damper/valve actuators. The combination of TSI and motor-control FTM makes it especially attractive for touch-button + motor combinations such as induction cooktops, washing-machine user panels, and smart thermostats. Industrial HVAC controllers and small IoT edge nodes that need 5V I/O also benefit from the wide supply range.
When designing with the S08PT family, ensure the supply decoupling network follows the manufacturer reference layout (typically 100 nF + 10 uF near VDD/VSS pairs) and respect the 5.5V absolute-maximum input limit on analog and digital pins to avoid latch-up. For TSI electrode routing, keep the touch copper shielded by ground pour and away from switching FTM traces to prevent false touches.
This page consolidates distributor pricing, same-package drop-in alternatives in the S08PT/PA family, and practical design notes that go beyond the manufacturer datasheet, helping engineers and buyers make an informed sourcing and design decision.
Drop-in alternatives for MC9S08PT32VLF — 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 MC9S08PT32VLF (same form factor and footprint) — differing in Package, ADC, Core Architecture, Core Processor, EEPROM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MC9S08PT32VLC
✅ Drop-In📋 Reference alternative (not in catalog)
MC9S08PT32AVLD
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →MC9S08PT16AVWJ
✅ Drop-In✓ In Stock
$1.65 / Unit
View Datasheet →MC9S08PT32VLLC
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MC9S08PT32VLF Maximum Ratings & Electrical Characteristics
| Core | HCS08 (S08) 8-bit |
| CPU Maximum Frequency | 20 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 4 KB |
| EEPROM | 256 B |
| Supply Voltage Range | 2.7 V to 5.5 V |
| GPIO Count | 44 (approximate, package-dependent) |
| ADC | 12-bit, up to 12 channels |
| Communication Peripherals | 1x SCI (UART), 1x SPI, 1x I2C |
| Timers | 6-channel FTM (motor control), plus RTC |
| Touch Sensing Interface (TSI) | Yes (integrated TSI module) |
| Package | 48-LQFP (7x7 mm) |
| Operating Temperature | -40 C to +105 C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
MC9S08PT32VLF Pin Configuration
| Pin 1 | PTC2/ADP6 — Port C bit 2 / ADC channel 6 (multiplexed) |
| Pin 2 | PTC3/ADP7 — Port C bit 3 / ADC channel 7 (multiplexed) |
| Pin 3 | VDD — Supply voltage (2.7 V to 5.5 V) |
| Pin 4 | VSS — Ground |
| Pin 5 | PTC4 — Port C bit 4 GPIO |
| Pin 6 | PTC5 — Port C bit 5 GPIO |
| Pin 7 | PTC6 — Port C bit 6 GPIO |
| Pin 8 | PTC7 — Port C bit 7 GPIO |
| Pin 9 | PTB0 — Port B bit 0 GPIO |
| Pin 10 | PTB1 — Port B bit 1 GPIO |
| Pin 11 | PTB2 — Port B bit 2 GPIO |
| Pin 12 | PTB3 — Port B bit 3 GPIO |
| Pin 13 | PTB4 — Port B bit 4 GPIO |
| Pin 14 | PTB5 — Port B bit 5 GPIO |
| Pin 15 | PTB6 — Port B bit 6 GPIO |
| Pin 16 | PTB7 — Port B bit 7 GPIO |
| Pin 17 | PTA0 — Port A bit 0 GPIO |
| Pin 18 | PTA1 — Port A bit 1 GPIO |
| Pin 19 | PTA2 — Port A bit 2 GPIO |
| Pin 20 | PTA3 — Port A bit 3 GPIO |
| Pin 21 | PTA4 — Port A bit 4 GPIO |
| Pin 22 | PTA5 — Port A bit 5 GPIO |
| Pin 23 | PTA6 — Port A bit 6 GPIO |
| Pin 24 | PTA7 — Port A bit 7 GPIO |
| Pin 25 | PTD0 — Port D bit 0 GPIO |
| Pin 26 | PTD1 — Port D bit 1 GPIO |
| Pin 27 | PTD2 — Port D bit 2 GPIO |
| Pin 28 | PTD3 — Port D bit 3 GPIO |
| Pin 29 | PTD4 — Port D bit 4 GPIO |
| Pin 30 | PTD5 — Port D bit 5 GPIO |
| Pin 31 | PTD6 — Port D bit 6 GPIO |
| Pin 32 | PTD7 — Port D bit 7 GPIO |
| Pin 33 | PTE0 — Port E bit 0 GPIO |
| Pin 34 | PTE1 — Port E bit 1 GPIO |
| Pin 35 | PTE2 — Port E bit 2 GPIO |
| Pin 36 | PTE3 — Port E bit 3 GPIO |
| Pin 37 | PTE4 — Port E bit 4 GPIO |
| Pin 38 | PTE5 — Port E bit 5 GPIO |
| Pin 39 | PTE6 — Port E bit 6 GPIO |
| Pin 40 | PTE7 — Port E bit 7 GPIO |
| Pin 41 | VDD — Supply voltage (2.7 V to 5.5 V) |
| Pin 42 | VSS — Ground |
| Pin 43 | RESET_b — Active-low reset input |
| Pin 44 | BKGD/MS — Background debug / mode select |
| Pin 45 | PTF0 — Port F bit 0 GPIO |
| Pin 46 | PTF1 — Port F bit 1 GPIO |
| Pin 47 | PTF2 — Port F bit 2 GPIO |
| Pin 48 | PTF3 — Port F bit 3 GPIO |
Typical Applications
MC9S08PT32VLF is suitable for 6 applications: Capacitive-Touch Appliance User Interface, Small BLDC and Brushed-DC Motor Control, White Goods Control Board, HVAC Damper and Valve Actuator, Low-Cost Sensor Hub / IoT Edge Node, Smart Thermostat and Climate Panel.
Capacitive-Touch Appliance User Interface
The MC9S08PT32VLF is purpose-built for capacitive-touch user interfaces on home appliances because its integrated Touch Sensing Interface (TSI) supports up to 16 electrodes with minimal external components, while the 20 MHz HCS08 core can scan, debounce, and drive the display refresh loop in real time. The 32KB Flash comfortably hosts NXP TSI firmware libraries plus application code, and the 12-bit ADC reads slider/wheel positions from the same TSI channels. Using a single LQFP-48 part removes the need for an external touch IC, lowering BOM cost for induction cooktops, washing machines, and microwave ovens.
Recommended
Small BLDC and Brushed-DC Motor Control
The MC9S08PT32VLF includes a 6-channel FlexTimer (FTM) module with complementary PWM and dead-time insertion, which is sufficient to drive small 3-phase BLDC fans, pumps, and brushed DC gear motors. Combined with the 12-bit ADC for back-EMF or current sensing and 2.7V-5.5V supply tolerance for direct 5V H-bridge interfacing, the part is a strong fit for low-cost appliance motor nodes. The 4KB SRAM supports field-oriented control (FOC) or trapezoidal commutation tables, while the 256-byte EEPROM stores calibration data across power cycles.
Recommended
White Goods Control Board
In white-goods control boards (dishwashers, refrigerators, air purifiers) the MC9S08PT32VLF serves as the main HMI + supervisory MCU, multiplexing LED indicators, reading temperature/door switches via the 12-bit ADC, and communicating with a power-stage board through SCI (UART) or SPI. Its 2.7V-5.5V supply tolerance lets it share the 5V logic rail with relay drivers, while the integrated TSI module provides capacitive buttons without extra ICs. The wide -40 C to +105 C operating range ensures reliability inside hot appliance enclosures.
Recommended
HVAC Damper and Valve Actuator
For HVAC damper and valve actuator designs, the MC9S08PT32VLF drives a small brushed or stepper motor through its FTM, reads position feedback via the ADC, and reports status over UART to a central controller. The 5V-tolerant I/O simplifies interface to legacy HVAC backplanes that operate at 5V logic levels, while the 256-byte EEPROM stores trim and calibration values that survive brown-outs. The LQFP-48 footprint is well-suited to compact actuator housings.
Recommended
Low-Cost Sensor Hub / IoT Edge Node
In a low-cost sensor hub or IoT edge node the MC9S08PT32VLF aggregates readings from external SPI/I2C sensors, performs local filtering, and pushes data over UART to a Wi-Fi or sub-GHz radio module. Its 32KB Flash hosts a lightweight RTOS or cooperative scheduler, while the 4KB SRAM buffers sensor packets before transmission. The 5V-tolerant GPIO lets the hub share rails with industrial 5V transducers without level shifters, simplifying enclosure wiring.
Recommended
Smart Thermostat and Climate Panel
The MC9S08PT32VLF is a strong fit for smart thermostat control: its TSI module reads capacitive touch sliders and circular dials, the ADC monitors NTC temperature sensors, and the FTM drives relay or TRIAC outputs for HVAC call stages. The 32KB Flash holds a full thermostat UI plus scheduling logic, and the 5V supply tolerance allows direct connection to 24VAC-derived 5V rails typically found in HVAC equipment. The LQFP-48 footprint is comfortable behind the touch glass with adequate GPIO for relays, LEDs, and a serial debug port.
Recommended
Recommended Products Summary
Engineering reference data for MC9S08PT32VLF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MC9S08PT32VLC | MC9S08PT32AVLD | MC9S08PT16AVWJ | MC9S08PT32VLLC |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) | 48-LQFP-equivalent (A WJ variant) | 48-LQFP (7x7 mm) |
| Flash Memory | 32 KB | 32 KB | 32 KB | 16 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply 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 | 2.7 V to 5.5 V |
| Touch Sensing Interface (TSI) | Yes | Yes | Yes | Yes | Yes |
| Automotive Grade (AEC-Q100) | No (industrial) | No (industrial) | Yes (AEC-Q100) | Yes (AEC-Q100) | No (industrial) |
Key Differentiators
- Integrated Touch Sensing Interface (TSI) on-chip (vs MC9S08PA32AVLF (S08PA family, no TSI))
- Pin-compatible migration path across S08PT Flash densities (vs MC9S08PT16AVWJ (16KB Flash sibling))
- Automotive-grade sibling available in same footprint (vs MC9S08PT32VLC (industrial temperature grade))
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD/VSS pair on the LQFP-48 package, plus a single 10 uF bulk capacitor on the main 5V rail. The S08PT internal voltage regulator derives the 1.8V core logic from the external 2.7V-5.5V supply, so a noisy 5V rail will degrade ADC accuracy and TSI touch measurements. Add a ferrite bead in series with the analog supply if the digital section draws large transient currents.
For TSI electrode routing, surround each touch pad with a solid ground pour to shield against capacitive coupling from switching FTM traces or relay coils. Keep TSI traces short and avoid running them in parallel with high-di/dt motor-drive traces for more than a few millimetres. Place a ground-free keep-out zone of at least 5 mm around each touch electrode to prevent false touches from nearby metal or liquid films.
Do not apply voltages above 5.5V to any GPIO pin, even briefly, as the S08PT is a 5V-tolerant part but not 5V-plus-tolerant; over-voltage transients can trigger latch-up. When migrating from the VLF suffix to the AVLD suffix, double-check that the automotive-grade variant's temperature range (-40 C to +125 C) still meets the enclosure derating budget; otherwise thermal shutdown may occur in sealed appliance housings.
Compliance Information
RoHS and REACH compliance per NXP product page. The MC9S08PT32VLF itself is industrial-grade (not AEC-Q100); the AVLD suffix variant provides automotive-grade qualification.