NXP Semiconductors MC9S08FL16CLC

Overview

MC9S08FL16CLC from NXP Semiconductors (formerly Freescale) is an 8-bit S08 microcontroller with 16 KB flash, 1024-byte RAM, and integrated peripherals including dual TPM modules, 12-channel 8-bit ADC, SCI interface, and 30 GPIOs. It operates up to 20 MHz at 4.5–5.5 V across –40 °C to +85 °C and supports low-power stop modes for battery-powered industrial sensors and motor control subsystems.

For engineers reviewing the MC9S08FL16CLC datasheet, MC9S08FL16CLC pinout, MC9S08FL16CLC application, or MC9S08FL16CLC equivalent, key selection criteria include its 32-pin LQFP/SDIP package compatibility, ICS-based clock system with ±2% DCO deviation over voltage/temperature, on-chip ICE debug support, and LIN-capable SCI for automotive body electronics integration.

Technical Context

The MC9S08FL16CLC implements the HCS08 CPU core with BGND instruction support and hardware nested interrupt handling via IPC. Its ICS module provides bus frequencies up to 10 MHz using FLL-controlled internal reference trimmed to 31.25 kHz (±0.2% resolution), enabling stable timing without external crystal in cost-sensitive applications.

Peripherals include two timer/PWM modules (TPM1: 4-channel, TPM2: 2-channel), a 16-bit modulo timer (MTIM16), and an ADC with temperature sensor (1.7 mV/°C), bandgap reference, and stop-mode operation - all functional within the 4.5–5.5 V supply range and qualified for industrial temperature operation.

Key Specifications

Pinout & Package

MC9S08FL16CLC is available in 32-pin LQFP (873A-03) and 32-pin SDIP (1376-02) packages. Both variants share identical pin functions and electrical characteristics per Freescale Document Number MC9S08FL16 Rev. 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08FL16CLC, S9S08FL16F1MLC offers identical functionality with updated branding and compliance, while MC9S08AC128CPUE provides significantly more memory and peripherals at the cost of larger footprint and non-interchangeable pinout - making the former a seamless upgrade and the latter a capacity-scaling option.

Availability

MC9S08FL16CLC is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, small-appliance motor controllers, and smart power outlets requiring stable component supply and long-term industrial temperature qualification.

Supply support for MC9S08FL16CLC 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 acquired Freescale in 2015 and maintains full technical and supply chain continuity for the S08 portfolio. NXP is a global leader in secure connectivity solutions for automotive, industrial, and IoT markets.

The MC9S08FL16CLC belongs to the S08FL family designed for cost-optimized, low-power embedded control in automotive and industrial applications where reliability, debug capability, and analog integration are critical.

FAQ

What is the maximum operating frequency of the MC9S08FL16CLC CPU core?

The MC9S08FL16CLC CPU core runs at up to 20 MHz across the full industrial temperature range (–40 °C to +85 °C) when supplied with 4.5–5.5 V. This requires the internal clock source (ICS) to be configured for high-frequency mode with appropriate DCO trim and bus divider settings, as validated in Freescale Document Number MC9S08FL16 Rev. 4 Section 5.8.

Does the MC9S08FL16CLC support in-circuit debugging, and what interface is used?

Yes, the MC9S08FL16CLC supports single-wire background debug (BDM) via the PTA4/BKGD/MS pin. It includes an on-chip ICE debug module with two comparators and nine trigger modes, enabling breakpoint setting and real-time trace during development - all documented in the MC9S08FL16RM Reference Manual and confirmed in the MC9S08FL16 Rev. 4 datasheet.

Can the MC9S08FL16CLC ADC operate while the MCU is in stop mode?

Yes, the MC9S08FL16CLC ADC is explicitly specified to function in Stop3 mode, allowing analog measurements without waking the CPU. This capability is confirmed in the "Peripherals" section of the MC9S08FL16 Rev. 4 datasheet and enables ultra-low-power sensor polling in battery-operated applications using the MC9S08FL16CLC.

What are the supported clock sources for the MC9S08FL16CLC ICS module?

The MC9S08FL16CLC ICS module supports both internal and external clock sources: an internal trimmed RC oscillator (31.25 kHz base), external crystal/resonator (31.25 kHz–16 MHz), or external square-wave clock (0.03125–20 MHz). The FLL dynamically adjusts the DCO output to maintain accuracy, with ±2% deviation over voltage and temperature - as detailed in Table 9 of MC9S08FL16 Rev. 4.

Is the MC9S08FL16CLC pin-compatible with other S08FL-series MCUs like the MC9S08FL8?

No, the MC9S08FL16CLC is not fully pin-compatible with the MC9S08FL8 despite shared package options. While both use 32-pin LQFP/SDIP footprints, the MC9S08FL8 has only 768 bytes RAM and 8 KB flash, and certain peripheral mappings (e.g., ADC channel count, TPM configuration) differ. Pin assignments match per Table 1 in MC9S08FL16 Rev. 4, but functional equivalence is not guaranteed across variants.