NXP Semiconductors MC9S08QE96CFT

Overview

MC9S08QE96CFT from NXP Semiconductors (formerly Freescale) is an 8-bit HCS08 microcontroller with 96 KB flash, 6 KB RAM, and 64-pin LQFP package. It delivers up to 50.33 MHz CPU operation above 2.4 V, integrates dual analog comparators, a 22-channel 12-bit ADC, two I²C modules, two SPI interfaces, two SCI/UARTs, three TPM timer/PWM modules, and RTC-all operating in low-power stop3 mode. It targets automotive body electronics and industrial control systems requiring robust mixed-signal integration and extended temperature support.

For engineers reviewing the MC9S08QE96CFT datasheet, MC9S08QE96CFT pinout, MC9S08QE96CFT application, or MC9S08QE96CFT equivalent, key selection factors include its 64-pin LQFP mechanical compatibility, 1.8–3.6 V supply range, 22-channel ADC with internal temperature sensor, dual I²C masters supporting 100 kbps, and background debug interface for in-circuit development-critical for cost-sensitive, safety-aware embedded designs.

Technical Context

The MC9S08QE96CFT implements the HCS08 CPU core with HC08 instruction set extension (including BGND), supports up to 32 interrupt/reset sources, and features an Internal Clock Source (ICS) with FLL and precision-trimmed internal reference enabling ±0.2% resolution at 2–50.33 MHz. Its clock system allows flexible sourcing from crystal (1–16 MHz), ceramic resonator (31.25–38.4 kHz), or internal oscillator.

System-level protection includes COP watchdog with selectable 1-kHz or bus-clock source, programmable low-voltage detection (VLVDH = 2.11–2.27 V, VLVDL = 1.80–1.99 V), illegal opcode reset, and flash block protection. Power management supports two stop modes, reduced-power wait, peripheral clock gating, and 6 μs typical wake-up time from stop.

Key Specifications

Pinout & Package

MC9S08QE96CFT is housed in a 64-pin LQFP package (Case 840F) with exposed pad thermal design, compliant with JEDEC MS-026. Pin assignments match the MC9S08QE128 series 64-pin variant, supporting full peripheral routing including dual I²C, dual SPI, dual SCI, 22 ADC inputs, and 54 general-purpose I/Os with configurable pull-ups, slew rate, and drive strength.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08AC128CPUE, the MC9S08QE96CFT offers smaller footprint and integrated RTC, while S9KEAZ128AMLH provides ARM-based performance and memory headroom at the cost of architectural discontinuity and higher active power.

Availability

MC9S08QE96CFT is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, home appliance motor controllers, and medical diagnostic handhelds requiring stable component supply, long-term lifecycle support, and qualified automotive-grade reliability.

Supply support for MC9S08QE96CFT 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in microcontrollers and analog integration.

The MC9S08QE96CFT belongs to the HCS08-based QE series designed for cost-effective, mixed-signal embedded control in automotive body electronics and industrial automation-emphasizing low-voltage operation, integrated analog peripherals, and debug-enabled development.

FAQ

What is the maximum operating frequency of the MC9S08QE96CFT and under what voltage conditions?

The MC9S08QE96CFT achieves up to 50.33 MHz CPU operation when supplied above 2.4 V, 40 MHz above 2.1 V, and 20 MHz above 1.8 V across the full –40°C to +85°C temperature range. This graded frequency scaling ensures deterministic timing behavior while maintaining functional integrity at lower supply voltages common in battery-operated or brownout scenarios. The internal clock source (ICS) with FLL and trimmed reference enables stable high-speed execution without external crystal dependency.

Does the MC9S08QE96CFT support real-time clock functionality and how is it powered in low-power modes?

Yes, the MC9S08QE96CFT integrates a dedicated real-time counter (RTC) that operates in run, wait, and stop3 modes using either internal 1-kHz low-power oscillator or external clock source. In stop3 mode, the RTC remains fully functional with typical current draw below 1 μA, enabling precise time-of-day tracking, calendar functions, or cyclic wake-up events without waking the CPU. This capability is critical for battery-backed applications like smart sensors or alarm systems where continuous timekeeping is required with minimal energy consumption.

How many analog-to-digital converter channels does the MC9S08QE96CFT provide and what is their resolution?

The MC9S08QE96CFT features a 22-channel, 12-bit successive approximation register (SAR) ADC with 2.5 μs conversion time, internal bandgap reference, automatic compare function, and integrated temperature sensor (1.7 mV/°C). All 22 channels remain operational in stop3 mode, allowing analog measurements during ultra-low-power states. The ADC supports single-ended and differential input configurations, and its resolution enables sub-1 LSB accuracy for precision sensor interfacing in automotive and industrial applications.

What debug interface does the MC9S08QE96CFT use and what capabilities does it offer?

The MC9S08QE96CFT uses a single-wire background debug (BKGD) interface compatible with standard Freescale/NXP BDM tools. It supports in-circuit debugging with one hardware breakpoint, two additional software breakpoints, and full read/write access to memory and registers. The on-chip debug module includes two comparators, nine trigger modes, and an eight-deep FIFO for storing flow-change addresses-enabling efficient code validation, timing analysis, and field firmware updates without requiring JTAG headers or additional PCB space.

Is the MC9S08QE96CFT pin-compatible with other devices in the MC9S08QE128 series and what package options exist?

Yes, the MC9S08QE96CFT shares identical pinouts with the MC9S08QE128 and MC9S08QE64 in the 64-pin LQFP package (Case 840F), enabling direct substitution within that footprint. The QE series also offers 80-pin LQFP (MC9S08QE128), 48-pin QFN (MC9S08QE64), 44-pin LQFP (MC9S08QE64), and 32-pin LQFP (MC9S08QE64) variants-each with defined pin mapping per Table 2 in the datasheet. Mechanical compatibility is maintained across the family, though peripheral availability (e.g., second I²C, RTC, ADC channels) varies by flash/RAM size and pin count.