NXP Semiconductors MC9S08PT16AVTJ

Overview

MC9S08PT16AVTJ from NXP Semiconductors is an 8-bit S08 core 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 FlexTimer modules (6-channel + 2-channel), 12-bit 12-channel ADC, I²C, two SCI/UARTs, SPI, RTC, TSI touch interface, and on-chip ICE debug support. It targets industrial motor control and sensor-based embedded systems requiring robust low-power operation and mixed-signal integration.

For engineers reviewing the MC9S08PT16AVTJ datasheet, MC9S08PT16AVTJ pinout, MC9S08PT16AVTJ application, or MC9S08PT16AVTJ equivalent, key selection considerations include its 20-pin TSSOP package, –40 °C to 105 °C extended temperature rating, 20 MHz bus frequency at 2.7–5.5 V, ultra-low stop3 mode current (1.3 µA), and integrated touch sensing with wake-from-stop capability.

Technical Context

The MC9S08PT16AVTJ implements an enhanced 8-bit S08 CPU with four-level nested interrupt handling and up to 40 interrupt/reset sources. Its clock system combines a 31.25 kHz–20 MHz external crystal oscillator (XOSC) and an internal clock source (ICS) with FLL, enabling precise 1% internal reference accuracy from 0 °C to 70 °C and 2% over full temperature range.

System protection includes independent watchdog timer, programmable low-voltage detect (LVD) with multiple trip points (2.56–4.4 V), illegal opcode/address detection, and flash/RAM access protection. Peripheral clock gating via the peripheral clock enable register allows selective module disable in low-power modes, including Stop3 with only 1 kHz LPO active.

Key Specifications

Pinout & Package

MC9S08PT16AVTJ is housed in a 20-pin TSSOP package (JEDEC MO-153AA), with 18 GPIOs, one output-only pin (PTA4/BKGD), two true open-drain outputs (PTA2, PTA3), and four 20 mA high-drive pins (PTB4, PTB5, PTD0, PTD1). Pin assignments follow NXP's standardized S08 port mapping with multiplexed peripherals including TSI, ADC, FTM, SCI, and I²C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08PT16AVTJ, MC9S08PT16VLD offers more I/O and ADC channels in a larger package, while S9KEAZ128AMLH delivers higher compute throughput at the cost of increased power and non-compatible toolchain - making MC9S08PT16AVTJ optimal for cost-sensitive, low-power 20-pin embedded control.

Availability

MC9S08PT16AVTJ is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, automotive body electronics, and appliance user interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC9S08PT16AVTJ 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 markets, with deep expertise in microcontrollers and mixed-signal integration.

The MC9S08PT16 series belongs to NXP's legacy S08 portfolio, designed specifically for cost-optimized, low-power embedded control in harsh environments - emphasizing robustness, integrated peripherals, and long-term manufacturability.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PT16AVTJ?

The MC9S08PT16AVTJ 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 extended industrial temperature range of –40 °C to 105 °C. Its internal clock source (ICS) with FLL achieves this performance using either internal trimming or external crystal reference, with 2% accuracy over the full temperature range.

Does the MC9S08PT16AVTJ support touch sensing, and how many electrodes can it handle?

Yes, the MC9S08PT16AVTJ integrates 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 - enabling responsive, ultra-low-power human-machine interaction.

What low-power modes does the MC9S08PT16AVTJ offer, and what is its lowest current consumption?

The MC9S08PT16AVTJ supports multiple low-power modes, including Wait and Stop3. In Stop3 mode - where only the 1 kHz LPO clock remains active - it consumes just 1.3 µA at 5 V and 1.3 µA at 3 V. Additional peripherals like TSI, LVD, or RTC add minimal overhead (e.g., +121 µA for TSI), preserving µA-level standby operation.

Which pins on the MC9S08PT16AVTJ support 20 mA drive strength, and are they bidirectional?

The MC9S08PT16AVTJ provides four ultra-high-current sink/source pins: PTB4, PTB5, PTD0, and PTD1. Each supports 20 mA drive in both sourcing and sinking directions. These pins are fully bidirectional and retain GPIO functionality while delivering sufficient current to drive LEDs, small relays, or MOSFET gates without external buffers.

Is the MC9S08PT16AVTJ pin-compatible with other members of the MC9S08PT16 family?

No - the MC9S08PT16AVTJ uses a 20-pin TSSOP package, while other variants like MC9S08PT16VLD (44-pin LQFP) and MC9S08PT16VLC (32-pin LQFP) have different pin counts and layouts. Although they share identical peripheral sets and register maps, physical pinout and I/O count differ significantly; PCB redesign is required when switching between packages.