NXP Semiconductors MC9S08PA16AVWJ

Overview

MC9S08PA16AVWJ from NXP Semiconductors is an 8-bit S08 microcontroller with 16 KB flash, 2 KB RAM, and 256 B EEPROM, operating at up to 20 MHz across –40 °C to 105 °C. It integrates dual FTM modules (6-channel + 2-channel), 12-bit 12-channel ADC, I²C, two SCI/LIN UARTs, SPI, RTC, and analog comparator-designed for automotive body control modules requiring robust low-power operation and mixed-signal integration.

For engineers reviewing the MC9S08PA16AVWJ datasheet, MC9S08PA16AVWJ pinout, MC9S08PA16AVWJ application, or MC9S08PA16AVWJ equivalent, key selection criteria include its 20-pin SOIC package, VDD range of 2.7–5.5 V, stop3 mode current of 1.3 µA, 4 high-current GPIOs (20 mA sink/source), and integrated background debug interface for in-circuit development.

Technical Context

The MC9S08PA16AVWJ implements an S08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines a Pierce oscillator (31.25 kHz–20 MHz) and an internal frequency-locked-loop (FLL) with factory-trimmed reference enabling ±1% accuracy from 0 °C to 70 °C.

System protection includes independent watchdog timer, programmable low-voltage detect (LVD) with four warning thresholds, illegal opcode/address detection, and flash/RAM access protection. Peripheral clock gating via the peripheral clock enable register allows selective module power-down in low-power modes.

Key Specifications

Pinout & Package

The MC9S08PA16AVWJ is housed in a 20-pin SOIC package (package code VWJ), with 18 GPIOs, two true open-drain outputs (PTA2, PTA3), one output-only pin (PTA4/BKGD), and dedicated reset, IRQ, XTAL/EXTAL, VDD/VSS, and analog supply pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08PA16AVWJ, S9S08PA16AVWJ offers identical functionality under updated branding, while MC9S08AC128VFAE trades analog peripherals and RTC for greater flash/RAM-making it suitable for algorithm-heavy but less sensor-integrated designs.

Availability

MC9S08PA16AVWJ is available at Aetrix Electronics and suitable for automotive body electronics, smart lighting systems, and industrial sensor nodes requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.

Supply support for MC9S08PA16AVWJ 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.

The MC9S08PA16 series belongs to NXP's legacy S08 8-bit MCU family, designed specifically for cost-sensitive, low-power automotive body electronics and industrial control where robustness, mixed-signal integration, and debug accessibility are critical.

FAQ

What is the maximum operating temperature range for the MC9S08PA16AVWJ?

The MC9S08PA16AVWJ is rated for operation from –40 °C to +105 °C, as indicated by the "V" suffix in its part number. This makes it suitable for under-hood automotive applications and industrial environments where extended temperature tolerance is required. Junction temperature is specified up to 125 °C, and thermal resistance for the 20-pin SOIC package is 82 °C/W on a single-layer board.

Does the MC9S08PA16AVWJ support LIN communication?

Yes, the MC9S08PA16AVWJ supports LIN communication through its two SCI modules, both of which include LIN extension features such as 13-bit break detection and automatic sync field handling. The SCI modules operate in full-duplex NRZ mode and are compliant with LIN 2.x specifications, enabling use in automotive body networks as either master or slave node.

How many high-current GPIO pins does the MC9S08PA16AVWJ have, and what is their drive capability?

The MC9S08PA16AVWJ has four ultra-high-current GPIO pins: PTB4, PTB5, PTD0, and PTD1. Each supports 20 mA sink or source current at VDD = 5 V, enabling direct driving of LEDs, relays, or small solenoids without external drivers. These pins also double as FTM2 and FTM0 channels for timing-critical applications.

Can the MC9S08PA16AVWJ execute code from RAM, and what are the current implications?

Yes, the MC9S08PA16AVWJ can execute code from RAM in FBE mode. In this configuration, typical run current is 10.9 mA at 20 MHz and 5 V-higher than flash execution (7.6 mA) due to RAM access overhead. However, RAM execution enables dynamic code updates and faster interrupt response, making it valuable for bootloader or safety-monitoring routines where deterministic latency is critical.

What debug interface does the MC9S08PA16AVWJ provide, and is external hardware required?

The MC9S08PA16AVWJ provides a single-wire background debug (BKGD) interface accessible via PTA4, eliminating the need for dedicated JTAG pins. No external emulator hardware is required-only a simple level-shifting circuit to interface with standard USB-BDM tools. The on-chip ICE module supports three breakpoints and nine trigger modes, enabling full in-circuit debugging including real-time variable watch and program flow analysis.