NXP Semiconductors MC9S08PA32AVLH

Overview

MC9S08PA32AVLH from NXP Semiconductors is an 8-bit S08 microcontroller with 32 KB flash, 4 KB RAM, and 256 B EEPROM, operating at up to 20 MHz across –40 °C to 105 °C. It integrates a 16-channel 12-bit ADC, three FlexTimer modules (6+2+2 channels), three SCI/LIN-capable UARTs, I²C, dual SPI, RTC, CRC, analog comparator, and keyboard interrupt modules. It serves in automotive body control units requiring robust real-time I/O management and low-power stop3 mode operation.

For engineers reviewing the MC9S08PA32AVLH datasheet, MC9S08PA32AVLH pinout, MC9S08PA32AVLH application, or MC9S08PA32AVLH equivalent, key selection factors include its 32-pin LQFP package, 20 mA high-drive GPIO capability, flash/EEPROM endurance specs, stop3-mode current (1.4 µA), and compatibility with NXP's S08 background debug interface for in-circuit development.

Technical Context

The MC9S08PA32AVLH implements an enhanced S08 CPU core with four-level nested interrupt support and up to 40 interrupt/reset sources. Its clock system combines an internal frequency-locked loop (ICS) - trimmed to ±1% over 0–70 °C and ±2% over full temperature range - with an external crystal/ceramic oscillator (XOSC) supporting 31.25 kHz–20 MHz.

System protection includes independent watchdog with dedicated clock, programmable low-voltage detection (LVD) with four warning thresholds, illegal opcode/address reset, and flash/RAM access protection. Power management supports one low-power stop mode and reduced-power wait mode, with peripheral clock gating via PMC register to minimize active current draw.

Key Specifications

Pinout & Package

MC9S08PA32AVLH is housed in a 32-pin LQFP (7 × 7 mm, 0.8 mm pitch) package with exposed pad. Pin assignments follow the MC9S08PA32A variant mapping per datasheet Rev. 4 (09/2019), supporting 28 GPIOs, two KBI inputs, true open-drain outputs (PTA2/PTA3), and eight 20 mA high-sink pins (PTB4, PTB5, PTD0, PTD1, PTE0, PTE1, PTH0, PTH1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08PA32AVLH, MC9S08PA60AVLH offers direct pin-compatible flash expansion, while S9KEAZ128AMLH provides architectural modernization at the cost of increased code migration effort and power budget impact.

Availability

MC9S08PA32AVLH is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and smart appliance control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC9S08PA32AVLH 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 and mixed-signal integration.

The MC9S08PA series targets cost-sensitive, high-reliability embedded control applications where deterministic real-time response, low-power operation, and robust peripheral integration are essential - particularly in automotive body electronics and industrial equipment.

FAQ

What is the maximum operating frequency and voltage range for the MC9S08PA32AVLH?

The MC9S08PA32AVLH 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 clock source (ICS) uses a frequency-locked loop with factory-trimmed reference, achieving ±1% accuracy from 0 °C to 70 °C and ±2% across the full operating range. This ensures timing stability in demanding environments without external crystal dependency.

Does the MC9S08PA32AVLH support in-circuit debugging, and what interface is used?

Yes, the MC9S08PA32AVLH supports in-circuit debugging via a single-wire background debug mode (BDM) using the BKGD/MS pin. It provides breakpoint capability (up to three breakpoints), on-chip in-circuit emulator (ICE) with two comparators and nine trigger modes, and full visibility into CPU registers and memory during runtime. This eliminates the need for external debug headers and simplifies development on space-constrained PCBs.

How much flash, RAM, and EEPROM does the MC9S08PA32AVLH include?

The MC9S08PA32AVLH integrates 32 KB of on-chip flash memory, 4 KB of RAM, and 256 bytes of EEPROM. Flash supports read/program/erase over full voltage and temperature range, with erase sectors sized at 2 bytes. EEPROM allows byte-level writes and retains data through 100,000 write cycles. Both memories feature access protection to prevent unauthorized reads or modifications during debug or field operation.

What low-power modes are available on the MC9S08PA32AVLH, and what is the lowest current consumption?

The MC9S08PA32AVLH offers multiple low-power modes, including Wait and Stop3. In Stop3 mode - where only the 1 kHz low-power oscillator remains active - typical supply current is 1.4 µA at 5 V. Additional peripherals like ADC or LVD can be enabled in Stop3, adding predictable current increments (e.g., +44 µA for ADC, +130 µA for LVD). This enables ultra-low-power wake-on-event operation ideal for battery-powered systems.

Which packages are supported for the MC9S08PA32AVLH, and what is the pin count for VLH?

The MC9S08PA32AVLH is offered exclusively in the 32-pin LQFP package, as indicated by the "VLH" suffix per NXP's part numbering convention (where "LC" = 32-pin LQFP, but "VLH" maps to the same 32-pin variant per datasheet Table 1). The 32-pin LQFP measures 7 mm × 7 mm with 0.8 mm pitch and includes an exposed thermal pad. It supports 28 GPIOs, two KBI inputs, and all core peripherals with no pin multiplexing conflicts in standard configurations.