NXP Semiconductors MC9S08DV32ACLH

Overview

MC9S08DV32ACLH from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB flash, 3 KB RAM, and integrated CAN 2.0A/B controller, ADC, SPI, I²C, SCI, TPM, RTC, and analog comparators - deployed in automotive body control modules, industrial sensor nodes, and motor drive supervision systems.

For engineers reviewing the MC9S08DV32ACLH datasheet, MC9S08DV32ACLH pinout, MC9S08DV32ACLH application, or MC9S08DV32ACLH equivalent, key selection criteria include CAN protocol compliance, 12-bit ADC conversion time (2.5 μs), real-time interrupt capability in stop modes, and LQFP-48 package compatibility with legacy HCS08 toolchains.

Technical Context

The MC9S08DV32ACLH implements the S08CPUV3 core with 40-MHz CPU clock (20-MHz bus), supporting up to 32 interrupt/reset sources and BGND instruction for single-wire background debug. Its Multi-Purpose Clock Generator (MCG) provides FLL/PLL modes with ±1.5% accuracy using internal temperature-compensated reference and factory-trimmed IRC.

Peripherals include a 16-channel 12-bit ADC with internal bandgap reference and temperature sensor, two analog comparators with edge-selectable interrupts, MSCAN with five receive buffers and programmable identifier filters (2×32-bit, 4×16-bit, or 8×8-bit), and dual SCIs supporting LIN 2.0 and SAE J2602 protocols.

Key Specifications

Pinout & Package

MC9S08DV32ACLH is housed in a 48-pin low-profile quad flat-pack (LQFP) measuring 7×7 mm with 0.5 mm pitch. Pin assignments are defined per Freescale Document MC9S08DV60 Series Data Sheet, Rev 3 (June 2008), Section 2.1 "Device Pin Assignment".

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DV32ACLH, S9S08DZ32F2MLC offers AEC-Q100 Grade 2 qualification and improved ADC INL, while MC9S08DZ32CLC provides mechanical and functional equivalence with simplified migration path - both retain CAN, RTC, and BDM support but differ in clock stability and safety feature implementation.

Availability

MC9S08DV32ACLH is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, motor drive supervision, and smart power distribution panels requiring stable component supply across extended product lifecycles.

Supply support for MC9S08DV32ACLH 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 company formed from the spin-off of Freescale Semiconductor and Philips' semiconductor division, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The MC9S08DV32ACLH belongs to the HCS08 DV-series microcontrollers, designed specifically for cost-sensitive, CAN-enabled embedded control applications in automotive and industrial environments where robustness, low power, and debug simplicity are critical.

FAQ

What is the maximum bus frequency supported by the MC9S08DV32ACLH?

The MC9S08DV32ACLH supports a maximum bus frequency of 20 MHz, derived from its 40-MHz CPU clock via a fixed 2:1 divider. This bus speed is validated across the full operating voltage (2.7–5.5 V) and temperature (–40°C to 105°C) range, enabling deterministic timing for peripherals including ADC, CAN, and TPM modules. The MC9S08DV32ACLH achieves this using the Multi-Purpose Clock Generator's FLL/PLL modes with internal reference trimming.

Does the MC9S08DV32ACLH include an integrated CAN transceiver?

No, the MC9S08DV32ACLH integrates only the CAN protocol controller (MSCAN module), not the physical layer transceiver. It requires an external CAN transceiver (e.g., TJA1042, MCP2551) to drive the differential CAN_H/CAN_L bus lines. The MC9S08DV32ACLH provides dedicated TX and RX pins (PTB6/PTB7) compatible with industry-standard transceivers and supports ISO 11898-1 compliant message framing, filtering, and error handling.

What packaging and lead finish does the MC9S08DV32ACLH use?

The MC9S08DV32ACLH is supplied in a 48-pin low-profile quad flat-pack (LQFP) package measuring 7×7 mm with 0.5 mm pitch, and features a lead-free, RoHS-compliant matte tin finish. This package matches the mechanical footprint of other HCS08 DV-series devices like MC9S08DV48ACLH and MC9S08DV16ACLH, enabling board-level scalability across memory variants without layout changes.

Can the MC9S08DV32ACLH operate from an internal clock source only?

Yes, the MC9S08DV32ACLH can operate entirely from its internal reference clock (IRC), which is factory-trimmed and stored in flash. The Multi-Purpose Clock Generator supports FLL mode using the IRC as a reference, achieving ±1.5% accuracy across temperature. This eliminates the need for external crystals or resonators in applications where timing precision requirements allow - such as non-safety-critical sensor polling or local control loops. The MC9S08DV32ACLH retains full peripheral functionality including ADC, CAN, and RTC in this configuration.

What debug interface does the MC9S08DV32ACLH support?

The MC9S08DV32ACLH supports a single-wire background debug mode (BDM) interface via the BKGD/MS pin, enabling in-circuit programming, real-time emulation, breakpoint insertion, and memory inspection without requiring a dedicated JTAG header. This interface is fully compatible with standard Freescale/NXP BDM tools including the DEMO9S08DV32 evaluation board and CodeWarrior Development Studio v6.3+. The MC9S08DV32ACLH uses this same pin for both debug and mode selection during reset.