NXP Semiconductors MC9S08QE16CLC

Overview

MC9S08QE16CLC from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 16 KB flash, 1 KB RAM, and integrated peripherals including 12-bit ADC, dual analog comparators, two SCI modules, SPI, I²C, three TPM timer/PWM modules, and RTC. It operates from 1.8 V to 3.6 V and supports up to 50.33 MHz CPU frequency at 3.6 V, targeting low-power embedded control in industrial sensors and motor drive interfaces.

For engineers reviewing the MC9S08QE16CLC datasheet, MC9S08QE16CLC pinout, MC9S08QE16CLC application, or MC9S08QE16CLC equivalent, key selection criteria include its 32-pin QFN package (5 mm × 5 mm), stop3 mode wakeup time of 6 µs, 10-channel 12-bit ADC with temperature sensor, internal clock source (ICS) with ±2% deviation over voltage/temperature, and single-wire background debug interface for in-circuit development.

Technical Context

The MC9S08QE16CLC 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), enabling stable CPU frequencies from 4 kHz to 50.33 MHz across supply and temperature.

System-level protection includes COP reset with dedicated 1 kHz internal clock option, low-voltage detection (LVD) with selectable trip points (VLVDH = 2.11–2.27 V, VLVDL = 1.80–1.99 V), illegal opcode/address detection, and flash block protection. Peripheral operation in stop3 mode is supported for ADC, ACMP, RTC, and SCI wake-on-active-edge functionality.

Key Specifications

Pinout & Package

MC9S08QE16CLC is housed in a 32-pin QFN package (Case 1582), 5 mm × 5 mm body size, exposed thermal pad, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC16, MC9S08QE16CLC adds RTC, dual ACMP, and TPM3 - essential for time-aware and analog-rich systems; versus S9KEAZ128AMLH, it delivers superior low-voltage operation (1.8 V) and lower active/stop-mode currents, making it more suitable for energy-harvesting or long-life battery applications.

Availability

MC9S08QE16CLC is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, smart lighting controllers, and home appliance UI panels requiring stable component supply and long-term lifecycle support.

Supply support for MC9S08QE16CLC 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 focused on secure connectivity solutions for automotive, industrial, IoT, and mobile applications.

The MC9S08QE16CLC belongs to the HCS08-based QE series, designed specifically for cost-sensitive, ultra-low-power embedded control in resource-constrained environments where analog integration, robust system protection, and debug simplicity are critical.

FAQ

What is the maximum operating frequency of the MC9S08QE16CLC at 2.4 V supply?

The MC9S08QE16CLC supports up to 40 MHz CPU frequency at 2.4 V supply across the full temperature range (–40 °C to +85 °C). This is enabled by its internal clock source (ICS) with FLL, which maintains stability under varying voltage and temperature conditions. The MC9S08QE16CLC achieves this performance while retaining full peripheral functionality, including ADC operation and stop3 mode readiness.

Does the MC9S08QE16CLC support debugging via a single pin?

Yes, the MC9S08QE16CLC features a single-wire background debug (BDC) interface accessible through PTA4/BKGD. This allows full in-circuit debugging - including breakpoint setting, memory inspection, and register access - using only one dedicated pin, reducing PCB footprint and connector complexity. The MC9S08QE16CLC also supports three on-chip debug breakpoints and an eight-deep FIFO for trace capture during development.

Can the MC9S08QE16CLC operate from a 1.8 V supply while running its ADC?

Yes, the MC9S08QE16CLC is fully specified to operate its 12-bit ADC across the entire supply range of 1.8 V to 3.6 V. The ADC maintains 10-channel capability, 2.5 µs conversion time, and internal bandgap reference functionality at 1.8 V. This ensures consistent sensor measurement accuracy in battery-powered applications where supply voltage drops over time - a key design advantage of the MC9S08QE16CLC.

What package type and dimensions does the MC9S08QE16CLC use?

The MC9S08QE16CLC uses a 32-pin QFN package (Case 1582), measuring 5 mm × 5 mm with an exposed thermal pad. It is lead-free and RoHS-compliant. This compact footprint supports high-density PCB layouts while providing adequate thermal dissipation for typical embedded control workloads. The MC9S08QE16CLC shares pin compatibility with other 32-pin QFN variants in the QE family, simplifying design reuse.

How does the MC9S08QE16CLC handle low-voltage conditions?

The MC9S08QE16CLC incorporates dual-threshold low-voltage detection (LVD) with independently configurable high-range (VLVDH = 2.11–2.27 V) and low-range (VLVDL = 1.80–1.99 V) trip points. It supports both reset and interrupt responses, enabling graceful shutdown or state preservation before brownout. The MC9S08QE16CLC also includes low-voltage warning (LVW) with hysteresis, allowing firmware to initiate backup operations proactively.