NXP Semiconductors MC9S08DZ32ACLC

Overview

MC9S08DZ32ACLC from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB on-chip Flash, 4 KB RAM, and integrated CAN 2.0A/B controller, ADC, and real-time counter - deployed in automotive body control modules requiring deterministic timing and robust communication.

For engineers reviewing the MC9S08DZ32ACLC datasheet, MC9S08DZ32ACLC pinout, MC9S08DZ32ACLC application, or MC9S08DZ32ACLC equivalent, key selection criteria include CAN protocol compliance, 24-channel 12-bit ADC performance, single-wire background debug support, and low-power stop mode operation under 1 µA.

Technical Context

The MC9S08DZ32ACLC implements the HCS08 CPU core running at up to 40 MHz (20 MHz bus), supporting 32 interrupt/reset sources and BGND instruction for debug entry. Its Multi-Purpose Clock Generator (MCG) provides FLL- and PLL-based clock synthesis with internal reference trim stored in Flash.

On-chip peripherals include MSCAN with five receive buffers and programmable identifier filters (2×32-bit, 4×16-bit, or 8×8-bit), two SCIs supporting LIN 2.0 and SAE J2602, and a 6-channel + 2-channel TPM for PWM and input capture - all operating across Run, Wait, and Stop3 modes.

Key Specifications

Pinout & Package

MC9S08DZ32ACLC is housed in a 64-pin LQFP (10×10 mm) package with exposed thermal pad. Pin assignments are defined per Chapter 2 of the MC9S08DZ60 Series Data Sheet Rev. 4, covering dedicated VDD/VSS pairs, crystal inputs (EXTAL/XTAL), CANH/CANL, ADC reference (VREFH/VREFL), and multiplexed peripheral I/O.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DZ32ACLC, S9S08DZ32F1MLC offers improved clock jitter performance and updated silicon revision, while MC9S08DZ48ACLC provides 16 KB more Flash in identical footprint - both retain full functional and pin compatibility for drop-in upgrades.

Availability

MC9S08DZ32ACLC is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN nodes, and smart lighting controllers requiring stable component supply, long-term manufacturability, and AEC-Q100-aligned qualification.

Supply support for MC9S08DZ32ACLC 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 focused on secure connectivity solutions for automotive, industrial, and IoT applications.

The MC9S08DZ32ACLC belongs to the HCS08 DZ-series, designed specifically for cost-sensitive automotive body electronics requiring CAN, ADC, and low-power operation in harsh environments.

FAQ

What is the maximum bus frequency supported by the MC9S08DZ32ACLC?

The MC9S08DZ32ACLC supports a maximum bus frequency of 20 MHz, derived from its 40-MHz HCS08 CPU core via a 2:1 divider. This frequency is maintained across all operating modes including Run and Wait, and is compatible with MSCAN timing requirements up to 1 Mbps. The MCG module allows configuration of multiple clock sources - including internal reference, crystal, or PLL - to sustain this bus speed under varying voltage and temperature conditions. MC9S08DZ32ACLC maintains timing integrity through on-chip clock monitoring and loss-of-lock protection.

Does the MC9S08DZ32ACLC support in-circuit programming of Flash and EEPROM?

Yes, the MC9S08DZ32ACLC supports full in-circuit programming and erasure of both Flash and EEPROM across its entire operating voltage and temperature range. Flash erase operations can be performed in sector sizes, while EEPROM supports 8-byte single-page or 4-byte dual-page erase. The device also enables program-and-erase-while-executing (PEWE) functionality, allowing background firmware updates without halting application code. MC9S08DZ32ACLC includes flash block protection and security features to prevent unauthorized access during field programming.

How many CAN message buffers does the MC9S08DZ32ACLC provide, and what filtering options are available?

The MC9S08DZ32ACLC integrates the MSCAN module with five dedicated receive buffers organized in FIFO structure. Identifier acceptance filtering is fully programmable in three configurations: two 32-bit filters, four 16-bit filters, or eight 8-bit filters - enabling flexible message prioritization and bandwidth allocation. All filters operate independently of CPU intervention and support standard (11-bit) and extended (29-bit) frame formats per CAN 2.0A/B. MC9S08DZ32ACLC uses these buffers to decouple reception from processing, reducing latency in high-traffic CAN networks.

What debug interface does the MC9S08DZ32ACLC use, and is it compatible with standard tools?

The MC9S08DZ32ACLC uses a single-wire background debug mode (BDM) interface compliant with Freescale/NXP's BDM specification. It is supported by standard tools including the P&E Micro USB-ML-12 and SEGGER J-Link (with BDM firmware), as well as NXP's S08 CodeWarrior IDE. The interface provides non-intrusive breakpoint setting, register inspection, and real-time memory access without requiring dedicated debug pins beyond BKGD/MS and RESET. MC9S08DZ32ACLC also includes on-chip in-circuit emulation (ICE) with real-time bus capture for timing-critical analysis.

What low-power modes are available on the MC9S08DZ32ACLC, and how does RTC function in Stop mode?

The MC9S08DZ32ACLC offers two very low-power Stop modes (Stop2 and Stop3), plus a reduced-power Wait mode. In Stop3 mode, current consumption drops below 1 µA while retaining RAM and register contents. The real-time counter (RTC) continues running using the dedicated 1-kHz internal low-power oscillator - enabling cyclic wake-up events without external crystal or components. MC9S08DZ32ACLC supports RTC-triggered exit from Stop3 to Run mode, making it suitable for battery-powered nodes requiring periodic sensor sampling or CAN heartbeat transmission.