NXP Semiconductors MC9S08PT32VLF

Overview

MC9S08PT32VLF from NXP Semiconductors is an 8-bit S08 microcontroller designed for cost-sensitive industrial and automotive control applications. It features a 20 MHz bus frequency across –40 °C to 105 °C, 32 KB flash memory, 4 KB RAM, 256 byte EEPROM, and integrated peripherals including 12-bit ADC (12-channel), three FlexTimer modules (6+2+2 channels), I²C, three SCI/UARTs, two SPI interfaces, RTC, CRC, analog comparator, and touch-sensing interface (TSI). It operates from 2.7 V to 5.5 V.

For engineers reviewing the MC9S08PT32VLF datasheet, MC9S08PT32VLF pinout, MC9S08PT32VLF application, or MC9S08PT32VLF equivalent, this page delivers verified technical context, package-specific pin assignments, real-world use cases in motor control and sensor interfacing, and validated alternative parts with documented functional and peripheral differences.

Technical Context

The MC9S08PT32VLF implements the HCS08 CPU core with nested interrupt support (up to four levels) and 40 interrupt/reset sources. Its clock system combines an external crystal oscillator (4–20 MHz or 31.25–39.0625 kHz) and an internal clock source (ICS) with FLL-based frequency multiplication and factory-trimmed reference enabling ±1% accuracy from 0 °C to 70 °C.

Power management includes Stop3 mode with ~1.4 µA typical current draw (5 V), plus configurable peripheral clock gating and low-voltage detection with programmable trip points. Memory protection covers flash, RAM, and EEPROM; debug is supported via single-wire background debug interface with three breakpoints and on-chip ICE module.

Key Specifications

Pinout & Package

MC9S08PT32VLF is packaged in a 48-pin LQFP (7 mm × 7 mm, 0.5 mm pitch) with 41 GPIOs, including six ultra-high-current sink pins (20 mA), two true open-drain outputs (PTA2, PTA3), and dedicated debug (BKGD/MS), reset (RESET), and oscillator (XTAL/EXTAL) pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit microcontroller applications.

Compared with MC9S08PT32VLF, MC9S08PT60VLF offers direct pin-compatible scalability within the same family, while S9KEAZN32AMLH provides a modern 32-bit foundation at the cost of software rework and toolchain change.

Availability

MC9S08PT32VLF is available at Aetrix Electronics and suitable for motor control, sensor node design, automotive body electronics, and industrial HMI applications requiring stable component supply, long-term lifecycle support, and industrial-grade temperature performance.

Supply support for MC9S08PT32VLF 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, IoT, mobile, and communication infrastructure markets.

The MC9S08PT series targets cost-optimized, high-reliability embedded control in harsh environments - designed specifically for automotive body electronics, industrial automation, and appliance control where extended temperature range and robust peripheral integration are critical.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PT32VLF?

The MC9S08PT32VLF operates at a maximum bus frequency of 20 MHz across its full supply voltage range of 2.7 V to 5.5 V and temperature range of –40 °C to +105 °C. This specification is guaranteed per datasheet Rev. 6 (09/2019), Table 1 and Section 6.2.1. The internal clock source (ICS) with FLL enables stable 20 MHz operation using either external crystals or internal RC references.

Does the MC9S08PT32VLF support in-circuit debugging, and what interface is used?

Yes, the MC9S08PT32VLF supports in-circuit debugging via a single-wire background debug interface (BDM) using the BKGD/MS pin (PTA4). It includes on-chip in-circuit emulator (ICE) functionality with two comparators and nine trigger modes, plus breakpoint capability for up to three simultaneous breakpoints during live debugging - all documented in Section 1.1 and Table 1 of the MC9S08PT60 Series Data Sheet.

How many ADC channels does the MC9S08PT32VLF have, and what is its resolution and conversion speed?

The MC9S08PT32VLF integrates a 12-bit successive-approximation ADC with 12 input channels, 2.5 µs conversion time, internal bandgap reference, and optional hardware triggering. It supports operation in Stop3 mode and includes data buffers with watermark capability. These specifications are confirmed in Table 1 (Ordering Information) and Section 7.3.1 of the MC9S08PT60 Series Data Sheet, which explicitly lists "12ch" for MC9S08PT32(A) variants.

What low-power modes are available on the MC9S08PT32VLF, and what is the typical current draw in Stop3 mode?

The MC9S08PT32VLF supports Wait mode and Stop3 mode. In Stop3 mode - where only the 1 kHz LPO clock remains active - typical supply current is 1.4 µA at 5 V and 1.45 µA maximum, as specified in Table 5, row 6 of the datasheet. Additional current adders apply for enabled peripherals: ADC (+44 µA), TSI (+111 µA), and LVD (+130 µA), all measured at –40 °C to +105 °C.

Is the MC9S08PT32VLF pin-compatible with other devices in the PT family, and which packages are supported?

Yes, the MC9S08PT32VLF (48-pin LQFP) shares identical pinout and signal mapping with MC9S08PT60VLF per Table 1 and Section 9.2 of the datasheet. The PT family supports five package options: 64-LQFP, 64-QFP, 48-LQFP (VLF), 44-LQFP (VLD), and 32-LQFP (VLC). Pin assignments are consistent across flash variants within the same package code, enabling hardware reuse across 32 KB and 60 KB versions.