NXP Semiconductors MC9S08PA4VTG

Overview

MC9S08PA4VTG from NXP Semiconductors is an 8-bit S08 microcontroller with 4 KB flash, 512 byte RAM, and 128 byte EEPROM, operating up to 20 MHz across 2.7–5.5 V supply and –40°C to +105°C temperature range. It integrates an 8-channel 12-bit ADC, three 2-channel FlexTimer modules, SCI/UART with LIN support, RTC, analog comparator, and keyboard interrupt module - deployed in industrial sensor nodes and motor control interfaces.

For engineers reviewing the MC9S08PA4VTG datasheet, MC9S08PA4VTG pinout, MC9S08PA4VTG application, or MC9S08PA4VTG equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative parts for embedded control design, low-power sensing, and cost-sensitive MCU replacement.

Technical Context

The MC9S08PA4VTG implements the HCS08 CPU core with four-level nested interrupt handling and up to 40 interrupt/reset sources. Its clock system combines a Pierce external oscillator (31.25 kHz–20 MHz) and an internal clock source (ICS) with FLL-based frequency multiplication and factory-trimmed reference enabling ±1% accuracy from 0°C to 70°C.

System protection includes a watchdog with independent 1 kHz LPO clock, selectable low-voltage detect/warning thresholds (2.56–4.8 V), illegal opcode/address detection, and flash/RAM access protection. Debug is supported via single-wire background debug interface with three breakpoints and on-chip ICE module featuring two comparators and nine trigger modes.

Key Specifications

Pinout & Package

MC9S08PA4VTG is housed in a 16-pin thin shrink small outline package (TSSOP), measuring 5.0 mm × 4.4 mm × 1.2 mm, with 0.65 mm lead pitch and exposed pad for thermal enhancement. Pin assignments are validated per MC9S08PA4 Data Sheet Rev. 10 (03/2020), Section 9.2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08PA4VTG, MC9S08PA8VTG offers double flash capacity in identical packaging for seamless upgrade, while S9KEAZ128AMLH provides ARM-based scalability at the cost of increased footprint and power - making MC9S08PA4VTG optimal for cost- and space-constrained 8-bit control where legacy S08 toolchain and minimal BOM are priorities.

Availability

MC9S08PA4VTG is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, smart metering subsystems, and home appliance control panels requiring stable component supply and long-term manufacturability.

Supply support for MC9S08PA4VTG 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 delivering secure, scalable solutions for automotive, industrial, IoT, and communication infrastructure markets.

The MC9S08PA4VTG belongs to the S08PA family - designed specifically for cost-sensitive, low-power embedded control applications requiring integrated analog peripherals, robust system protection, and compact packaging in harsh environments.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PA4VTG?

The MC9S08PA4VTG operates at up to 20 MHz bus frequency across a supply voltage range of 2.7 V to 5.5 V, fully specified over its –40°C to +105°C operating temperature range. This ensures reliable timing performance in industrial environments where wide voltage tolerance and thermal stability are critical. The internal clock source (ICS) with FLL maintains frequency accuracy even under varying supply conditions, and the external oscillator supports crystal or ceramic resonator inputs from 31.25 kHz to 20 MHz.

Does the MC9S08PA4VTG support debugging during live operation?

Yes, the MC9S08PA4VTG supports in-circuit debugging via its single-wire background debug interface (BKGD/MS pin), enabling real-time code execution control without halting system operation. It provides three hardware breakpoints and integrates an on-chip in-circuit emulator (ICE) module with two comparators and nine trigger modes - allowing precise event capture such as ADC completion, timer overflow, or GPIO state change. This capability is essential for validating timing-critical functions like motor commutation or sensor sampling in the MC9S08PA4VTG.

How many analog-to-digital converter channels does the MC9S08PA4VTG include, and what is their resolution?

The MC9S08PA4VTG includes an 8-channel, 12-bit successive approximation ADC with 2.5 µs conversion time, internal bandgap reference (1.14–1.18 V), and optional hardware triggering. All channels support operation in stop mode, enabling low-power sensor reading without waking the CPU. The ADC also features data buffers with watermark interrupt capability and automatic compare functionality - making it suitable for threshold-based monitoring in applications like battery voltage supervision or temperature sensing using the MC9S08PA4VTG.

What package type and thermal characteristics apply to the MC9S08PA4VTG?

The MC9S08PA4VTG uses a 16-pin TSSOP (TG) package measuring 5.0 mm × 4.4 mm × 1.2 mm with 0.65 mm lead pitch. Its thermal resistance is RθJA = 130°C/W on a single-layer board and 87°C/W on a four-layer board. These values are confirmed in the MC9S08PA4 Data Sheet Rev. 10, Table 10. Proper thermal design - including adequate copper pour and vias under the exposed pad - ensures junction temperature remains within the –40°C to +125°C limit during continuous operation at 20 MHz and 5.5 V supply.

Can the MC9S08PA4VTG operate in low-power modes while maintaining peripheral functionality?

Yes, the MC9S08PA4VTG supports multiple low-power modes including Stop3, where only the 1 kHz LPO clock remains active. In Stop3 mode, the ADC can remain operational with only +96 µA added current draw at 5 V, and the low-voltage detector adds +129 µA. The RTC continues running, and the keyboard interrupt module retains wake capability. This enables battery-powered applications - such as remote sensors using the MC9S08PA4VTG - to achieve multi-year operation while preserving responsiveness to external events.