NXP Semiconductors MC9S08DV32AMLCR

Overview

MC9S08DV32AMLCR from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB on-chip flash, 3 KB RAM, and integrated CAN 2.0A/B controller, ADC, and real-time counter - deployed in automotive body control modules and industrial sensor nodes requiring deterministic timing and bus-level fault resilience.

For engineers reviewing the MC9S08DV32AMLCR datasheet, MC9S08DV32AMLCR pinout, MC9S08DV32AMLCR application, or MC9S08DV32AMLCR equivalent, key selection criteria include CAN protocol compliance, 12-bit ADC conversion time (2.5 μs), MCG clock generator flexibility, stop-mode power consumption, and background debug interface support.

Technical Context

The MC9S08DV32AMLCR implements the S08CPUV3 core running at up to 40 MHz CPU / 20 MHz bus frequency, with HC08 instruction set extension including BGND for single-wire debug. Its Multi-Purpose Clock Generator (MCG) supports FLL (±1.5% accuracy with internal temperature compensation) and PLL modes, plus factory-trimmed internal reference clock.

Peripherals include a 16-channel 12-bit ADC with temperature sensor and bandgap reference, two analog comparators, dual SCI supporting LIN 2.0/SAE J2602, SPI, I²C, two TPM modules (6- and 2-channel), and RTC with 1 kHz low-power oscillator - all operating across run, wait, and two stop modes.

Key Specifications

Pinout & Package

MC9S08DV32AMLCR is housed in a 48-pin LQFP (7×7 mm) package with 53 general-purpose I/O pins and one input-only pin. All I/O pins support configurable pull devices, hysteresis, slew rate, and drive strength; 24 pins support edge-selectable interrupts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DV32AMLCR, S9S08DZ32F2MLC offers improved CAN timing robustness and AEC-Q100 qualification, while MC9S08AC32CFGE trades CAN for EEPROM and removes bus-level fault resilience - making MC9S08DV32AMLCR the optimal choice for legacy or cost-constrained CAN-based control where qualification scope is limited to industrial grade.

Availability

MC9S08DV32AMLCR is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN networks, smart HVAC actuators, and medical infusion pump controllers requiring stable component supply and long-lifecycle support.

Supply support for MC9S08DV32AMLCR 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, with roots in Freescale's microcontroller heritage.

The MC9S08DV32AMLCR belongs to the HCS08 DV-series - designed specifically for cost-sensitive, real-time automotive and industrial control applications demanding integrated CAN, low-power operation, and robust debug capabilities.

FAQ

What is the maximum bus frequency supported by the MC9S08DV32AMLCR?

The MC9S08DV32AMLCR supports a maximum bus frequency of 20 MHz, derived from its 40-MHz CPU clock via internal division. This frequency is validated across the full operating voltage (2.7–5.5 V) and temperature (−40°C to 105°C) range, and directly governs peripheral timing for SCI, SPI, I²C, and TPM modules. The MCG clock generator ensures stable bus synchronization using FLL or PLL modes.

Does the MC9S08DV32AMLCR include a hardware watchdog timer?

Yes, the MC9S08DV32AMLCR includes a Computer Operating Properly (COP) watchdog timer with configurable timeout and dual clock source options: it can run from either the main bus clock or a dedicated 1-kHz internal clock - ensuring reliable recovery even during deep stop modes. The COP module is enabled by default after reset and requires periodic servicing to prevent system reset.

Can the MC9S08DV32AMLCR operate without an external crystal?

Yes, the MC9S08DV32AMLCR can operate without an external crystal by using its Multi-Purpose Clock Generator (MCG) in FLL mode with the factory-trimmed internal reference clock (IRC). The IRC is calibrated to ±1.5% accuracy across temperature and provides sufficient stability for UART, SPI, and non-timing-critical CAN applications - eliminating BOM cost and board space for external oscillators.

What is the role of the BKGD/MS pin on the MC9S08DV32AMLCR?

The BKGD/MS pin serves dual functions: it acts as the single-wire interface for the background debug module (BDM) during normal operation, and as the mode select input during reset to determine boot behavior. When held low at reset, it forces entry into active background mode for non-intrusive debugging, flash programming, and real-time bus trace - all without halting CPU execution or requiring additional debug pins.

How many CAN message buffers does the MC9S08DV32AMLCR support?

The MC9S08DV32AMLCR MSCAN module supports five dedicated receive buffers organized in FIFO order, with flexible identifier acceptance filtering configurable as two 32-bit, four 16-bit, or eight 8-bit masks. Transmit functionality uses a single transmit buffer with automatic retransmission on bus error - enabling robust handling of mixed-standard and extended-frame traffic in automotive and industrial networks.