NXP Semiconductors MC9S08DZ48AMLH

Overview

MC9S08DZ48AMLH from NXP (formerly Freescale) is an 8-bit HCS08 microcontroller with 48 KB on-chip Flash, 2 KB EEPROM, and 4 KB RAM, operating at up to 40 MHz CPU / 20 MHz bus frequency. It integrates MSCAN (CAN 2.0A/B), dual SCI with LIN 2.0 support, 24-channel 12-bit ADC, two analog comparators, RTC, and six-channel TPM - deployed in automotive body control modules requiring CAN-based sensor/actuator communication.

For engineers reviewing the MC9S08DZ48AMLH datasheet, MC9S08DZ48AMLH pinout, MC9S08DZ48AMLH application, or MC9S08DZ48AMLH equivalent, key selection criteria include CAN protocol compliance, Flash/E2PROM endurance under automotive temperature cycling, real-time interrupt wake-up from Stop3 mode, and single-wire background debug interface for production programming.

Technical Context

The MC9S08DZ48AMLH implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources and vector redirection. Its Multi-Purpose Clock Generator (MCG) provides FLL- and PLL-based clock synthesis with factory-trimmed internal reference and external crystal support (1–16 MHz).

On-chip peripherals include a 24-channel 12-bit ADC with 2.5 µs conversion time and internal temperature sensor, dual SCIs compliant with SAE J2602 and LIN 2.0, and MSCAN with five receive buffers and programmable identifier filters (2×32-bit, 4×16-bit, or 8×8-bit).

Key Specifications

Pinout & Package

MC9S08DZ48AMLH is housed in a 48-pin LQFP package (7×7 mm, 0.5 mm pitch), with 53 general-purpose I/O pins and one input-only pin - pin count exceeds package count due to multiplexed peripheral functions across port pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S9S08DZ48F2MLH and MC9S08DZ60AMLH, the MC9S08DZ48AMLH delivers optimal balance of Flash capacity, automotive qualification, and cost for production body electronics - offering full peripheral functionality without over-provisioning memory.

Availability

MC9S08DZ48AMLH is available at Aetrix Electronics and suitable for automotive body control units, door module controllers, roof modules, and seat position memory systems requiring stable component supply across multi-year production cycles.

Supply support for MC9S08DZ48AMLH 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's microcontroller legacy.

The MC9S08DZ48AMLH belongs to the HCS08 DZ-series, designed specifically for cost-optimized, CAN-enabled automotive body electronics where robustness, low-power operation, and production-programmable non-volatile memory are critical.

FAQ

What is the maximum operating frequency of the MC9S08DZ48AMLH CPU core?

The MC9S08DZ48AMLH CPU core operates at up to 40 MHz, with a corresponding 20 MHz bus clock frequency. This timing is achieved using the on-chip Multi-Purpose Clock Generator (MCG) in PLL or FLL mode, supporting precise CAN bit timing and real-time control loop execution. The MC9S08DZ48AMLH maintains this performance across its full automotive temperature range (−40°C to +125°C) with appropriate voltage supply.

Does the MC9S08DZ48AMLH support CAN 2.0B extended frames?

Yes, the MC9S08DZ48AMLH MSCAN module fully supports CAN 2.0B extended frames, in addition to standard frames. Its five receive buffers implement a FIFO storage scheme, and identifier acceptance filters can be configured as 2×32-bit, 4×16-bit, or 8×8-bit - enabling flexible message filtering for both standard and extended identifiers in automotive network topologies.

How much EEPROM is integrated into the MC9S08DZ48AMLH, and what is its endurance rating?

The MC9S08DZ48AMLH integrates 2 KB of on-chip EEPROM, organized for in-circuit programming with 8-byte single-page or 4-byte dual-page erase sectors. While the datasheet does not specify a guaranteed endurance cycle count, Freescale's characterization confirms >100,000 write/erase cycles at 25°C and data retention exceeding 10 years at 85°C - meeting automotive EEPROM reliability requirements.

What debug interface does the MC9S08DZ48AMLH provide, and is external hardware required?

The MC9S08DZ48AMLH features a single-wire background debug (BDM) interface accessible via the BKGD/MS pin. No external debug probe is strictly required for basic programming - a simple level-shifter circuit suffices for connection to a PC USB port. Full in-circuit emulation (ICE) with real-time bus capture is supported using NXP's DEMO9S08DZ60 evaluation board or compatible BDM tools.

Is the MC9S08DZ48AMLH qualified for automotive applications, and what temperature grade does it support?

Yes, the MC9S08DZ48AMLH is AEC-Q100 qualified for automotive use and rated for the extended temperature range of −40°C to +125°C. Its design includes low-voltage detection with selectable trip points, COP watchdog with backup 1-kHz clock, and Flash block protection - all aligned with automotive functional safety expectations for body electronics applications.