NXP Semiconductors MC9S08DV32ACLF

Overview

MC9S08DV32ACLF 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 - used in automotive body control modules and industrial sensor nodes requiring deterministic timing and bus communication.

For engineers reviewing the MC9S08DV32ACLF datasheet, MC9S08DV32ACLF pinout, MC9S08DV32ACLF application, or MC9S08DV32ACLF equivalent, key selection criteria include CAN protocol compliance, 12-bit ADC conversion time (2.5 μs), stop-mode power consumption, MCG clock flexibility, and background debug interface support.

Technical Context

The MC9S08DV32ACLF implements the HCS08 CPU core running at up to 40 MHz (20 MHz bus), supporting 32 interrupt/reset sources and BGND instruction for single-wire debug. Its Multi-Purpose Clock Generator (MCG) provides FLL/PLL modes with ±1.5% accuracy using internal temperature compensation and factory-trimmed internal reference.

On-chip peripherals include a 16-channel 12-bit ADC with temperature sensor and bandgap reference, two analog comparators, dual SCI interfaces supporting LIN 2.0/SAE J2602, SPI, I²C, two TPM modules (6+2 channels), and an 8-bit RTC with external clock input and 1 kHz low-power oscillator.

Key Specifications

Pinout & Package

MC9S08DV32ACLF is available 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.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DV32ACLF, S9S08DZ32F2CLK offers stronger automotive qualification and LIN PHY but requires PCB redesign; MC9S08DZ32CLC removes CAN entirely and trades RTC/ADC depth for LIN integration - neither is pin-compatible, and both demand firmware adaptation for peripheral register access.

Availability

MC9S08DV32ACLF is available at Aetrix Electronics and suitable for automotive body electronics, industrial CAN sensor networks, and smart actuator modules requiring stable component supply across extended product lifecycles.

Supply support for MC9S08DV32ACLF 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 Philips' semiconductor division, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The MC9S08DV32ACLF belongs to NXP's legacy HCS08 microcontroller family, designed specifically for cost-sensitive, real-time embedded applications requiring CAN 2.0 communication, analog sensing, and ultra-low-power operation in harsh environments.

FAQ

What is the maximum bus frequency supported by the MC9S08DV32ACLF?

The MC9S08DV32ACLF supports a maximum bus frequency of 20 MHz, derived from its 40-MHz HCS08 CPU core via a 2:1 divider. This bus speed enables deterministic execution of time-critical tasks such as CAN message handling and ADC sampling within defined latency windows. The actual achievable bus frequency depends on the selected MCG mode and external clock source stability. MC9S08DV32ACLF maintains full peripheral functionality-including MSCAN, TPM, and ADC-at this rated bus speed.

Does the MC9S08DV32ACLF include a hardware CAN controller?

Yes, the MC9S08DV32ACLF integrates a fully compliant Freescale Controller Area Network (MSCAN) module supporting CAN 2.0A and 2.0B protocols. It features five receive buffers with FIFO storage, flexible identifier filtering (configurable as 2×32-bit, 4×16-bit, or 8×8-bit), and support for standard/extended frames and remote frames. MC9S08DV32ACLF does not require external CAN protocol logic - only a physical transceiver is needed for bus connection.

What packaging option is used for the MC9S08DV32ACLF?

The MC9S08DV32ACLF is packaged in a 48-pin low-profile quad flat-pack (LQFP) measuring 7×7 mm. This RoHS-compliant package supports surface-mount assembly and provides 53 general-purpose I/O pins plus one dedicated input pin. The 'LF' suffix in MC9S08DV32ACLF explicitly denotes the LQFP-48 variant, distinguishing it from other pin counts in the DV-series such as the 64-pin or 32-pin LQFP options.

Can the MC9S08DV32ACLF operate from an internal clock source without an external crystal?

Yes, the MC9S08DV32ACLF can operate using its internal reference clock (IRC), which is factory-trimmed and stored in flash. The Multi-Purpose Clock Generator (MCG) supports FLL mode with ±1.5% accuracy using internal temperature compensation - eliminating the need for an external crystal in applications where absolute timing precision is secondary to cost and board space. MC9S08DV32ACLF retains full peripheral functionality including ADC and CAN in this configuration.

Is there on-chip debugging support for the MC9S08DV32ACLF?

Yes, the MC9S08DV32ACLF includes a single-wire background debug (BDM) interface compliant with the HCS08 standard. This allows non-intrusive program download, breakpoint setting, register inspection, and real-time bus capture via on-chip in-circuit emulation (ICE). No additional debug probe is required beyond a standard BDM pod or compatible debugger - MC9S08DV32ACLF uses the BKGD/MS pin for both debug communication and boot-mode selection.