NXP Semiconductors MC9S08PA16VTJ

Overview

MC9S08PA16VTJ 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 FlexTimer modules (6-channel + 2-channel), 12-bit 12-channel ADC, two SCI/LIN interfaces, I²C, SPI, RTC, and analog comparator - deployed in automotive body control modules requiring deterministic real-time response under extended temperature conditions.

For engineers reviewing the MC9S08PA16VTJ datasheet, MC9S08PA16VTJ pinout, MC9S08PA16VTJ application, or MC9S08PA16VTJ equivalent, this page delivers verified technical context, package-specific pin mapping for the 20-pin TSSOP variant, functional peripheral timing constraints, low-voltage detection thresholds, and validated alternative parts for cost- or supply-sensitive design iterations.

Technical Context

The MC9S08PA16VTJ implements an S08 CPU core with nested interrupt support (up to four levels) and 40 interrupt/reset sources. Its clock system combines a 4–20 MHz external crystal oscillator (XOSC) and an internal clock source (ICS) with FLL-based frequency multiplication, enabling stable 20 MHz bus operation with ±1% accuracy over 0–70 °C and ±2% over full temperature range.

System-level protection includes independent watchdog timer, programmable low-voltage detect (LVD) with four warning levels (e.g., VLVDH = 4.3 V typical), illegal opcode/address reset, and flash/RAM access protection. Power management supports Stop3 mode with <1.35 µA typical current draw and peripheral clock gating to minimize active power.

Key Specifications

Pinout & Package

MC9S08PA16VTJ is housed in a 20-pin Thin Shrink Small Outline Package (TSSOP) with 0.65 mm pitch, optimized for compact automotive PCB layouts and reflow-compatible assembly. Thermal resistance is 116 °C/W (single-layer board) and 76 °C/W (four-layer board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08PA16VTJ, MC9S08PA16AVTJ offers identical functionality with improved manufacturing maturity, while S9KEAZ128AMLH delivers higher compute throughput at the cost of layout incompatibility and increased power consumption - making the former ideal for direct replacement and the latter suitable only for architectural upgrades.

Availability

MC9S08PA16VTJ is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor controllers, and medical handheld devices requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MC9S08PA16VTJ 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 MC9S08PA16 series belongs to NXP's legacy S08 portfolio, engineered specifically for cost-sensitive, thermally demanding embedded control tasks where deterministic real-time behavior, robust peripheral integration, and AEC-Q100 qualification are mandatory.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PA16VTJ?

The MC9S08PA16VTJ operates at up to 20 MHz bus frequency across a supply voltage range of 2.7 V to 5.5 V, with guaranteed performance over the full industrial temperature range of –40 °C to +105 °C. This specification is validated per the Rev. 4 (03/2020) datasheet and applies specifically to the VTJ (20-pin TSSOP) package variant of the MC9S08PA16VTJ.

Does the MC9S08PA16VTJ support in-circuit debugging, and what interface is used?

Yes, the MC9S08PA16VTJ supports single-wire background debug (BKGD) via the PTA4 pin, enabling full in-circuit emulation including breakpoint setting, register inspection, and flash programming without requiring a multi-pin debug header. This interface is integral to the MC9S08PA16VTJ silicon and requires no external debug adapter beyond standard BDM tools.

How many analog-to-digital converter channels does the MC9S08PA16VTJ include, and what is their resolution?

The MC9S08PA16VTJ integrates a 12-bit successive approximation ADC with 12 input channels (ADP0–ADP11), capable of 2.5 µs conversion time and supporting operation in Stop3 mode. Channel selection, trigger sources, and data buffering are fully configurable in the MC9S08PA16VTJ's ADCSC1 and ADCSC2 registers per the official datasheet.

What power-saving modes are available on the MC9S08PA16VTJ, and what is the lowest achievable current draw?

The MC9S08PA16VTJ supports multiple low-power states, including Wait mode and Stop3 mode. In Stop3 mode - where only the 1 kHz LPO clock remains active - the MC9S08PA16VTJ draws just 1.35 µA typical (5 V, 25 °C), enabling multi-year battery operation in sensor applications while retaining RTC and wake-up capability.

Is the MC9S08PA16VTJ pin-compatible with other members of the MC9S08PA16 family, such as the MC9S08PA16VLD?

No, the MC9S08PA16VTJ (20-pin TSSOP) is not pin-compatible with MC9S08PA16VLD (44-pin LQFP) due to fundamental package and pin count differences. While both share identical core functionality and register maps, their physical pinouts, peripheral multiplexing, and thermal characteristics differ significantly - requiring separate PCB layouts for each package variant of the MC9S08PA16VTJ family.