NXP Semiconductors MC9S08DN32ACLH

Overview

MC9S08DN32ACLH from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB 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 MC9S08DN32ACLH datasheet, MC9S08DN32ACLH pinout, MC9S08DN32ACLH application, or MC9S08DN32ACLH equivalent, key selection criteria include flash size (32 KB), EEPROM endurance (100K erase/write cycles), LIN-compliant SCI interface, stop-mode power consumption (≤1.5 µA), and LQFP-48 package compatibility with legacy HCS08 toolchains.

Technical Context

The MC9S08DN32ACLH implements the S08CPUV3 core with HC08 instruction set extension (including BGND), supporting up to 32 interrupt/reset sources and nested interrupt handling. Its Multi-Purpose Clock Generator (MCG) provides FLL- and PLL-based clock synthesis with internal reference trimming (factory-stored value in flash) and external crystal support from 31.25 kHz to 16 MHz.

On-chip peripherals are synchronized to the bus clock and retain functionality in Wait mode; RTC operates from a dedicated 1-kHz low-power oscillator during Stop2/Stop3 modes. System protection includes COP watchdog (with backup 1-kHz clock), low-voltage detect (reset/interrupt selectable), illegal opcode/address detection, and flash block protection.

Key Specifications

Pinout & Package

MC9S08DN32ACLH is housed in a 48-pin LQFP (7×7 mm, 0.5 mm pitch) package with exposed thermal pad. All I/O pins support configurable pull devices, hysteresis, slew rate, and drive strength; 24 pins support external interrupt with polarity selection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DN48ACLH and S9S08DN32F1CLK, the MC9S08DN32ACLH offers optimal balance of code space, peripheral richness, and power efficiency for cost-sensitive automotive and industrial control nodes where 32 KB flash suffices and legacy toolchain compatibility is required.

Availability

MC9S08DN32ACLH is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, smart appliance controllers, and medical device HMI subsystems requiring stable component supply and long-term manufacturability.

Supply support for MC9S08DN32ACLH 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 applications.

The HCS08 family - including MC9S08DN32ACLH - was designed for cost-sensitive, low-power embedded control in automotive body electronics and industrial automation, emphasizing robustness, integrated analog peripherals, and debug-friendly architecture.

FAQ

What is the maximum operating frequency of the MC9S08DN32ACLH CPU core?

The MC9S08DN32ACLH CPU core operates at a maximum frequency of 40 MHz, while the system bus runs at up to 20 MHz. This performance level is achieved using the on-chip Multi-Purpose Clock Generator (MCG) in FLL or PLL mode, with clock stability maintained across the full industrial temperature range (–40°C to +105°C). The MC9S08DN32ACLH datasheet specifies timing parameters for all peripheral modules relative to this bus clock.

Does the MC9S08DN32ACLH support LIN 2.0 communication natively?

Yes, the MC9S08DN32ACLH includes a dedicated SCI1 module that implements LIN 2.0 Protocol and SAE J2602 compliance features, including master extended break generation and slave extended break detection. This allows the MC9S08DN32ACLH to serve as a LIN slave node without external transceivers or protocol accelerators - verified in the Rev 3 datasheet Section 13 and functional test reports.

How much EEPROM memory does the MC9S08DN32ACLH provide, and what are its endurance specifications?

The MC9S08DN32ACLH integrates 2 KB of on-chip EEPROM with guaranteed endurance of at least 100,000 erase/write cycles per sector. It supports 4-byte dual-page or 8-byte single-page erase operations and allows programming while executing flash code - enabling safe storage of calibration data, device IDs, or runtime configuration without halting application execution.

What power-saving modes are available on the MC9S08DN32ACLH, and what is the lowest achievable current draw?

The MC9S08DN32ACLH supports two very low-power Stop modes (Stop2 and Stop3), a reduced-power Wait mode, and real-time interrupt wake-up. In Stop2 mode with RTC disabled and all clocks gated, typical current consumption is ≤1.5 µA at 25°C and 3.3 V - confirmed in Appendix A of the Rev 3 datasheet. Real-time interrupt wake-up uses the internal 1-kHz oscillator, eliminating external crystal dependency.

Is the MC9S08DN32ACLH pin-compatible with other members of the DN-series, such as the MC9S08DN48ACLH?

Yes, the MC9S08DN32ACLH in the LQFP-48 package shares identical pinout, electrical characteristics, and register mapping with the MC9S08DN48ACLH and MC9S08DN16ACLH. This allows direct substitution within the same footprint for firmware scaling - documented in the "Package Options" section and verified across all device variants in the MC9S08DN60 Series Data Sheet Rev 3.