NXP Semiconductors MC9S08DN32CLF

Overview

MC9S08DN32CLF from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB on-chip Flash, 2 KB RAM, and 2 KB EEPROM, operating at up to 40 MHz CPU / 20 MHz bus frequency. It integrates ADC12 (12-bit, 16-channel), dual analog comparators, SCI with LIN 2.0 support, SPI, I²C, two TPM modules (6+2 channels), RTC, and real-time interrupt capability - deployed in automotive body control modules and industrial sensor nodes.

For engineers reviewing the MC9S08DN32CLF datasheet, MC9S08DN32CLF pinout, MC9S08DN32CLF application, or MC9S08DN32CLF equivalent, key selection criteria include Flash size (32 KB), EEPROM endurance (100K erase/write cycles), 53 GPIO with configurable slew rate and hysteresis, and support for Stop2/Stop3 low-power modes with RTC wake-up - all validated for AEC-Q100 Grade 2 temperature operation.

Technical Context

The MC9S08DN32CLF implements the S08CPUV3 core with HC08 instruction set extension (including BGND), supporting up to 32 interrupt/reset sources and vectorized exception handling. Its Multi-Purpose Clock Generator (MCG) provides FLL- and PLL-based clock synthesis with factory-trimmed internal reference (±1.5% deviation) and external crystal support from 31.25 kHz to 16 MHz.

Peripherals are memory-mapped and independently clock-gated: ADC12 uses dedicated 2.5 µs conversion time with automatic compare and internal bandgap reference; SCI1 supports LIN 2.0 and SAE J2602 via master break generation and slave break detection; TPM1/TPM2 offer input capture, output compare, and edge-aligned PWM with independent prescalers.

Key Specifications

Pinout & Package

MC9S08DN32CLF is housed in a 48-pin low-profile quad flat-pack (LQFP) package measuring 7 mm × 7 mm with 0.5 mm pitch. Pin functions are defined per Chapter 2 of the MC9S08DN60 Series Data Sheet Rev 3 (2008), covering all 48 terminals including power, ground, reset, BKGD/MS debug interface, VREFH/VREFL, 53 GPIO (mapped across Ports A–G), and peripheral-specific signals (SCI, SPI, I²C, TPM, ADC inputs).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DN48CLF, the MC9S08DN32CLF trades Flash capacity for lower unit cost and reduced qualification overhead; versus S9KEAZN32ACLH, it offers proven AEC-Q100 reliability with zero software migration effort but lacks ARM ecosystem tooling and performance headroom.

Availability

MC9S08DN32CLF is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, smart lighting controls, and medical device subsystems requiring stable component supply across extended product lifecycles.

Supply support for MC9S08DN32CLF 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications - formed from the spin-off of Freescale Semiconductor in 2015.

The HCS08 family, including MC9S08DN32CLF, was engineered for cost-sensitive, high-reliability embedded control in harsh environments - emphasizing low-power operation, robust peripheral integration, and AEC-Q100 qualification for under-hood and chassis-mounted systems.

FAQ

What is the maximum operating temperature range certified for the MC9S08DN32CLF?

The MC9S08DN32CLF is qualified to AEC-Q100 Grade 2, supporting continuous operation from −40°C to +105°C ambient temperature. This rating is verified per Freescale's MC9S08DN60 Series Data Sheet Rev 3 (June 2008), Section A-1, and applies to all variants including MC9S08DN32CLF in the 48-pin LQFP package. Thermal derating is not required within this range.

Does the MC9S08DN32CLF support in-circuit programming via the BKGD pin?

Yes, the MC9S08DN32CLF supports single-wire background debug (BDM) through the BKGD/MS pin, enabling full flash programming, RAM inspection, and breakpoint debugging without halting real-time peripheral operation. This interface complies with Freescale's BDM specification and is supported by standard tools including PEMicro Cyclone and SEGGER J-Link with BDM firmware.

Can the MC9S08DN32CLF's ADC operate during Stop3 mode?

No - the ADC module is disabled in Stop3 mode per Section 4.5.3 of the MC9S08DN60 Series Data Sheet. However, the MC9S08DN32CLF can wake from Stop3 via real-time interrupt, then enable ADC in Run mode for burst sampling. For continuous low-power sensing, use the integrated temperature sensor with periodic RTC-triggered wakeups.

What clock sources are available for the MC9S08DN32CLF's MCG module?

The MC9S08DN32CLF MCG supports three primary clock sources: (1) external crystal/resonator (31.25 kHz–16 MHz), (2) factory-trimmed internal reference clock (~31.25 kHz, ±1.5%), and (3) external reference input (EXTAL). The MCG dynamically switches between FLL, PLL, and internal reference modes - all documented in Chapter 8 of the MC9S08DN60 Series Data Sheet Rev 3.

Is the MC9S08DN32CLF pin-compatible with the MC9S08DN60CLF in the same 48-pin LQFP package?

No - the MC9S08DN60CLF is only offered in 64-pin LQFP (10×10 mm) and 48-pin LQFP packages, but its 48-pin variant maps peripherals differently than the MC9S08DN32CLF. Pin compatibility is confirmed only between MC9S08DN32CLF and MC9S08DN48CLF in identical 48-pin LQFP footprints, as stated in Table C-1 of the MC9S08DN60 Series Data Sheet Rev 3.