NXP Semiconductors MC9S08PT8AVLD

Overview

MC9S08PT8AVLD from NXP Semiconductors is an 8-bit S08 microcontroller with 8 KB flash, 2 KB RAM, and 256 B EEPROM, operating at up to 20 MHz across –40 °C to 105 °C. It integrates ADC (12-channel, 12-bit), dual FTM modules (6+2 channels), I²C, two SCI/UARTs, SPI, RTC, TSI (16-electrode), and ACMP - deployed in automotive body control modules, industrial sensor nodes, and smart appliance controllers.

For engineers reviewing the MC9S08PT8AVLD datasheet, MC9S08PT8AVLD pinout, MC9S08PT8AVLD application, or MC9S08PT8AVLD equivalent, this page delivers verified electrical specs, validated package mapping (44-pin LQFP), confirmed peripheral timing behavior, and real-world use-case implementation guidance - all strictly traceable to NXP's Rev. 4 (03/2020) technical data sheet for the MC9S08PT16/PT8 series.

Technical Context

The MC9S08PT8AVLD uses an S08 CPU core with nested interrupt support (up to four levels) and a flexible clock system combining internal ICS (FLL-based, ±1% @ 0–70 °C) and external XOSC (4–20 MHz crystal). Its memory subsystem includes flash with read-while-write capability, EEPROM with 2-byte erase sectors, and RAM with access protection.

Peripheral integration centers on deterministic real-time control: dual FTM modules support edge- and center-aligned PWM, input capture, and output compare; TSI enables capacitive touch wake-up from Stop3 mode; and the 12-bit ADC achieves 2.5 µs conversion with hardware trigger and stop-mode operation - all coordinated via the System Integration Module (SIM) and Power Management Controller (PMC).

Key Specifications

Pinout & Package

MC9S08PT8AVLD is housed in a 44-pin LQFP (Leadless Quad Flat Package) with 0.8 mm pitch, 10 mm × 10 mm body size, and exposed thermal pad per NXP package drawing SOT109-1. Pin assignments follow the MC9S08PT16/PT8 series standard signal multiplexing layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08PT16AVLD, MC9S08PT8AVLD trades flash capacity for lower unit cost while retaining identical peripheral set and footprint - ideal for cost-constrained, fixed-function designs. Versus S9KEAZ128AMLH, it offers proven capacitive touch and keyboard interrupt support in a smaller package, but with less computational headroom.

Availability

MC9S08PT8AVLD is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and smart appliance control panels requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC9S08PT8AVLD 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in microcontrollers, RF, and analog technologies.

The MC9S08PT8AVLD belongs to NXP's legacy S08 8-bit MCU family, designed specifically for cost-sensitive, real-time embedded control in harsh environments - emphasizing low-power operation, integrated analog peripherals, and robust debug capabilities.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PT8AVLD?

The MC9S08PT8AVLD operates at up to 20 MHz bus frequency across a supply voltage range of 2.7 V to 5.5 V, fully specified over the industrial temperature range of –40 °C to 105 °C. Its internal ICS clock generator supports ±1% accuracy from 0 °C to 70 °C and ±2% across the full operating range, enabling reliable timing without external crystals in many applications.

Does the MC9S08PT8AVLD support capacitive touch sensing, and how many electrodes can it handle?

Yes, the MC9S08PT8AVLD includes a dedicated Touch Sense Interface (TSI) module supporting up to 16 external electrodes. It features configurable software or hardware scan triggers, full compatibility with NXP's touch sensing software library, and the ability to wake the MCU from Stop3 mode - making it suitable for touch-enabled HMI in appliances and industrial panels.

What are the power consumption characteristics of the MC9S08PT8AVLD in low-power modes?

In Stop3 mode with only the 1 kHz LPO clock active, the MC9S08PT8AVLD draws just 1.35 µA typical (5 V) or 1.3 µA (3 V). Adding active peripherals increases current incrementally: +40 µA for ADC, +121 µA for TSI, and +128 µA for LVD - all measured at –40 °C to 105 °C. This enables multi-year battery life in sensor nodes and always-on automotive modules.

How does the MC9S08PT8AVLD handle reset and watchdog functionality?

The MC9S08PT8AVLD integrates an independent watchdog timer with its own clock source and a programmable low-voltage detection (LVD) circuit offering selectable trip points (e.g., 4.3 V or 2.61 V). Both can generate either reset or interrupt, and illegal opcode/address detection provides additional fault containment - ensuring safe recovery in safety-critical automotive and industrial deployments.

Is the MC9S08PT8AVLD pin-compatible with other devices in the PT-series family?

Yes, the MC9S08PT8AVLD shares identical pinout and package (44-pin LQFP) with the MC9S08PT16AVLD, enabling direct hardware reuse. Differences are limited to flash size (8 KB vs. 16 KB) and certain peripheral channel counts (e.g., ADC channels vary by variant), but all I/O, peripheral, and debug signals map identically - simplifying design scalability and inventory consolidation.