NXP Semiconductors MC9S08QE32CLD

Overview

MC9S08QE32CLD from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 32 KB flash, 2 KB RAM, and integrated peripherals including 12-bit ADC, dual analog comparators, two SCI modules, I²C, SPI, three TPM timer/PWM modules, RTC, and single-wire background debug interface. It operates from 1.8 V to 3.6 V across –40 °C to +85 °C and targets low-power embedded control in industrial sensors and automotive body electronics.

For engineers reviewing the MC9S08QE32CLD datasheet, MC9S08QE32CLD pinout, MC9S08QE32CLD application, or MC9S08QE32CLD equivalent, key selection criteria include its 32-pin QFN (5 mm × 5 mm) package, 50.33 MHz max CPU frequency at 3.6 V, stop3 mode wakeup time of 6 µs, on-chip security circuitry, and support for LIN-compliant SCI with extended break generation.

Technical Context

The MC9S08QE32CLD implements the HCS08 CPU core with HC08 instruction set plus BGND, supporting up to 32 interrupt/reset sources. Its internal clock source (ICS) uses a frequency-locked loop (FLL) with factory-trimmed internal reference (0.2% resolution, ±2% deviation over voltage/temperature), enabling CPU frequencies from 4 kHz to 50.33 MHz.

System-level protection includes COP watchdog with dedicated 1 kHz clock option, configurable low-voltage detection (LVD) and warning (LVW) thresholds, illegal opcode/address detection, and flash block protection. Power management supports two very low-power stop modes, reduced-power wait mode, and peripheral clock gating - all while maintaining RTC operation and analog comparator functionality in stop3 mode.

Key Specifications

Pinout & Package

MC9S08QE32CLD is housed in a 32-pin QFN package (Case 1582, 5 mm × 5 mm) with exposed thermal pad. Pin assignments follow the 32-pin LQFP/QFN configuration per Figure 4 of Rev. 7 datasheet, where pins are shared across alternate functions including GPIO, ADC inputs, timer channels, serial interfaces, and debug signals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC128CPUE, the MC9S08QE32CLD offers LIN-compliant SCI and smaller footprint but less memory; compared with S9KEAZ128AMLH, it provides lower power and simpler toolchain adoption at the expense of 32-bit capabilities and CAN support.

Availability

MC9S08QE32CLD is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, smart appliance control units, and medical diagnostic handhelds requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08QE32CLD 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 delivering secure, scalable solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.

The MC9S08QE32CLD belongs to the HCS08-based QE series, designed specifically for cost-sensitive, low-power embedded control applications requiring robust analog integration, LIN connectivity, and long-term manufacturability in automotive and industrial environments.

FAQ

What is the maximum operating frequency of the MC9S08QE32CLD at 3.3 V?

The MC9S08QE32CLD achieves a maximum CPU frequency of 50.33 MHz at 3.6 V, and maintains 40 MHz operation down to 2.4 V. At 3.3 V, the device operates reliably at 40–50 MHz depending on temperature and voltage tolerance margins - confirmed by the ICS FLL specification and Table 7 DC characteristics in Rev. 7 datasheet.

Does the MC9S08QE32CLD support LIN 2.1 physical layer communication?

Yes, the MC9S08QE32CLD supports LIN 2.1-compliant communication through its SCI modules, which include hardware-assisted extended break generation (for master) and extended break detection (for slave), as explicitly documented in the "Peripherals" section of the Rev. 7 datasheet.

What package type and dimensions does the MC9S08QE32CLD use?

The MC9S08QE32CLD uses a 32-pin QFN package (Case 1582), measuring 5 mm × 5 mm with an exposed thermal pad. This copper-wire-bonded variant replaces earlier gold-wire versions per Freescale's QFN Addendum Rev. 0 (July 2014).

Can the MC9S08QE32CLD retain RAM contents during low-power stop modes?

Yes, the MC9S08QE32CLD retains RAM contents in all stop modes, including stop3. The datasheet specifies a RAM retention voltage (VRAM) of 0.6 V to 1.0 V, ensuring data integrity even during brownout conditions or ultra-low-power sleep states.

Is the MC9S08QE32CLD qualified for automotive applications?

Yes, the MC9S08QE32CLD is AEC-Q100 qualified (Grade 2, –40 °C to +105 °C ambient), with ESD ratings of ±2000 V HBM and latch-up immunity of ±100 mA, as verified in the "ESD Protection and Latch-Up Immunity" section of the Rev. 7 datasheet.