NXP Semiconductors MC9S08DN32MLH

Overview

MC9S08DN32MLH 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, dual analog comparators, SCI with LIN 2.0 support, SPI, I²C, two TPM modules, RTC, and single-wire background debug - deployed in automotive body control modules and industrial sensor nodes.

For engineers reviewing the MC9S08DN32MLH datasheet, MC9S08DN32MLH pinout, MC9S08DN32MLH application, or MC9S08DN32MLH equivalent, key selection criteria include Flash size (32 KB), 53 GPIO + 1 input-only pin, 12-bit ADC with temperature sensor, real-time counter with low-power oscillator, and LIN-compliant SCI for vehicle network integration.

Technical Context

The MC9S08DN32MLH implements the S08CPUV3 core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources and nested interrupts. Its Multi-Purpose Clock Generator (MCG) provides FLL- and PLL-based clock synthesis with factory-trimmed internal reference and external crystal/resonator options (31.25 kHz–16 MHz).

Peripherals are tightly coupled to the bus architecture: ADC12 uses dedicated 2.5 μs conversion time and automatic compare; TPM1 (6-channel) and TPM2 (2-channel) support input capture, output compare, and edge-aligned PWM; RTC operates independently using a free-running 1 kHz on-chip oscillator for wake-up without external components.

Key Specifications

Pinout & Package

MC9S08DN32MLH is housed in a 48-pin low-profile quad flat-pack (LQFP), 7 mm × 7 mm, 0.5 mm pitch, RoHS-compliant package with exposed thermal pad (as per Freescale MC9S08DN60 Series Mechanical Drawings, Rev 3, Appendix C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08DN32MLH, S9S08DN32F1MLH offers identical functionality with improved ESD tolerance, while MC9S08DZ32CLH trades RTC for CAN - making the former ideal for ruggedized upgrades and the latter optimal for CAN-centric vehicle networks.

Availability

MC9S08DN32MLH is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, smart metering systems, and medical device monitors requiring stable component supply across extended product lifecycles.

Supply support for MC9S08DN32MLH 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 MC9S08DN series was designed by Freescale (now NXP) as cost-optimized, low-power 8-bit MCUs targeting automotive body electronics and industrial control applications requiring LIN communication, analog sensing, and long-term reliability.

FAQ

What is the maximum operating frequency of the MC9S08DN32MLH CPU and bus?

The MC9S08DN32MLH features an HCS08 CPU core rated for up to 40 MHz operation, with a corresponding maximum bus frequency of 20 MHz. This timing is achieved using the on-chip Multi-Purpose Clock Generator (MCG) in PLL or FLL mode, and is validated across the full industrial temperature range (–40°C to +105°C) and 4.5–5.5 V supply voltage per Freescale MC9S08DN60 Series Data Sheet Rev 3.

Does the MC9S08DN32MLH support LIN 2.0 communication natively?

Yes, the MC9S08DN32MLH includes a dedicated Serial Communications Interface (SCI1) module with hardware support for LIN 2.0 Protocol and SAE J2602 compliance. It provides master-mode extended break generation, slave-mode extended break detection, and wakeup-on-active-edge - all implemented in silicon without firmware overhead. This capability is confirmed in Chapter 13 of the official datasheet.

How much EEPROM memory does the MC9S08DN32MLH have, and what are its erase characteristics?

The MC9S08DN32MLH integrates 2 KB of on-chip EEPROM memory. It supports 8-byte single-page erase or 4-byte dual-page erase sectors, and allows program and erase operations while executing Flash code. Erase abort functionality is also supported, enabling safe interruption of long erase cycles. These specifications are documented in Section 4.5 of the MC9S08DN60 Series Data Sheet Rev 3.

What debug interface does the MC9S08DN32MLH use, and how many pins are required?

The MC9S08DN32MLH uses a single-wire background debug (BDM) interface accessed via the BKGD/MS pin. Only one dedicated pin is required - no additional clock, data-out, or reset signals are needed. This interface supports full in-circuit emulation, flash programming, and real-time bus capture, as detailed in Chapter 16 of the official datasheet.

Is the MC9S08DN32MLH pin-compatible with other members of the DN-series like MC9S08DN60 or MC9S08DN48?

No - the MC9S08DN32MLH is offered exclusively in a 48-pin LQFP package, whereas MC9S08DN60 is available in 64-pin LQFP and MC9S08DN48 shares the same 48-pin LQFP but has different pin mappings for certain peripheral functions (e.g., TPM channel assignments). Pin compatibility is not guaranteed across the DN-series; designers must verify pinouts per device-specific mechanical drawings in Appendix C of the datasheet.