NXP Semiconductors PC9S08AC128CFGE

Overview

PC9S08AC128CFGE from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 128 KB Flash, 8 KB RAM, 40-MHz CPU core, 16-channel 10-bit ADC, dual SCI/LIN modules, and triple TPM timer/PWM units. It operates from 2.7–5.5 V across –40°C to +125°C and targets automotive body control, industrial sensor nodes, and low-cost motor control.

For engineers reviewing the PC9S08AC128CFGE datasheet, PC9S08AC128CFGE pinout, PC9S08AC128CFGE application, or PC9S08AC128CFGE equivalent, key selection criteria include its QFN-48 copper-wire package, on-chip background debug interface, LIN 2.0 compliance, 100 kbps I²C support, and integrated CRC module for memory integrity verification.

Technical Context

The PC9S08AC128CFGE implements the enhanced HCS08 CPU core with linear address pointer and memory management unit for paged memory access. Its internal clock generation (ICG) supports crystal, resonator, external clock, or factory-trimmed internal oscillator with NVM-based frequency calibration.

Peripherals include two full-duplex SCI modules compliant with LIN 2.0 and SAE J2602, one full-duplex SPI plus one master-only SPI, a multi-master I²C bus controller, three independent TPM modules (2×6-channel + 1×2-channel), and an 8-pin keyboard interrupt module - all accessible via software-configurable port pins with selectable drive strength and pull-up/pull-down.

Key Specifications

Pinout & Package

PC9S08AC128CFGE is packaged in a 48-pin QFN (98ASA00466D) with exposed thermal pad, copper-wire interconnect, and 0.5 mm pitch. The package supports reflow soldering and requires proper thermal pad grounding per EB806 guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08AC128F1MLH and MC9S08DZ128MLH, PC9S08AC128CFGE delivers identical core performance and memory in a thermally optimized 48-pin QFN - reducing PCB area by 30% and enabling higher-density layouts where CAN is unnecessary.

Availability

PC9S08AC128CFGE is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, motor control subsystems, and smart power outlets requiring stable component supply and long-term lifecycle support.

Supply support for PC9S08AC128CFGE 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 mobile applications, with deep heritage in microcontrollers and automotive electronics.

The PC9S08AC128CFGE belongs to the HCS08 family - designed specifically for cost-sensitive, high-reliability embedded control in automotive and industrial environments where LIN communication, robust ADC, and low-power operation are essential.

FAQ

What is the maximum operating frequency of the PC9S08AC128CFGE CPU core?

The PC9S08AC128CFGE features an enhanced HCS08 CPU core rated for up to 40 MHz operation, with a corresponding 20 MHz internal bus frequency. This timing is guaranteed across the full industrial temperature range (–40°C to +125°C) and supply voltage (2.7–5.5 V), enabling deterministic real-time execution in demanding control loops. The PC9S08AC128CFGE achieves this performance while maintaining compatibility with legacy HC08 instruction set extensions including BGND, CALL, and RTC.

Does the PC9S08AC128CFGE support LIN 2.0 communication natively?

Yes, the PC9S08AC128CFGE integrates two serial communications interface (SCI) modules that fully comply with LIN 2.0 Protocol and SAE J2602 specifications. Each SCI supports master extended break generation and slave extended break detection, along with wakeup-on-active-edge functionality - making the PC9S08AC128CFGE suitable for LIN slave nodes in automotive body electronics without requiring external transceivers or protocol accelerators.

What package type and thermal characteristics apply to the PC9S08AC128CFGE?

The PC9S08AC128CFGE is supplied in a 48-pin QFN package (document number 98ASA00466D) with copper-wire bonding and an exposed thermal pad. Its junction-to-ambient thermal resistance (θJA) is 81°C/W on a single-layer board and 28°C/W on a four-layer board, per Freescale's QFN Addendum Rev. 0. This thermal profile supports reliable operation at full 125°C ambient when properly mounted with grounded thermal pad per EB806 recommendations.

Can the PC9S08AC128CFGE perform hardware CRC calculations?

Yes, the PC9S08AC128CFGE includes a dedicated cyclic redundancy check (CRC) module capable of computing CRC-16 checksums in hardware. It supports fast memory integrity verification - completing a CRC over 64 bytes in less than 1 µs - which is critical for functional safety applications such as ASIL-B-compliant bootloaders and Flash self-test routines. The CRC module operates independently of the CPU, allowing concurrent computation during normal program execution.

What debug interface does the PC9S08AC128CFGE provide, and is external hardware required?

The PC9S08AC128CFGE uses a single-wire Background Debug (BKGD/MS) interface compliant with Freescale's BDM specification. No external debug probe is strictly required: basic programming and debugging can be performed using low-cost open-source BDM adapters. The on-chip debug module includes three comparators, nine trigger modes, and an eight-deep FIFO - enabling advanced trace capabilities without halting real-time operation. Full ICE functionality requires a compatible debugger such as the PE Micro Cyclone or SEGGER J-Link with BDM support.