NXP Semiconductors MC9S08FL8CLCR

Overview

MC9S08FL8CLCR from NXP Semiconductors (formerly Freescale) is an 8-bit S08 microcontroller with 8 KB flash, 768-byte RAM, and integrated peripherals including ADC, TPM timers, SCI, and ICS clock system. It operates up to 20 MHz at 4.5–5.5 V across –40 °C to 85 °C and targets cost-sensitive embedded control in industrial sensors and appliance motor interfaces.

For engineers reviewing the MC9S08FL8CLCR datasheet, MC9S08FL8CLCR pinout, MC9S08FL8CLCR application, or MC9S08FL8CLCR equivalent, key selection criteria include its 32-pin LQFP package, 12-channel 8-bit ADC with temperature sensor, dual TPM modules supporting PWM and input capture, and single-wire background debug interface for in-circuit development.

Technical Context

The MC9S08FL8CLCR implements the HCS08 CPU core with BGND instruction support and hardware nested interrupt handling via IPC. Its ICS module provides flexible clock generation-including FLL-locked internal reference trimmed to ±0.2%-enabling bus frequencies up to 10 MHz while maintaining operation in low-power stop modes.

Peripherals are tightly coupled to the memory-mapped register space: ADC supports automatic compare and conversion in stop mode; TPM1 (4-channel) and TPM2 (2-channel) offer configurable edge- or center-aligned PWM; MTIM16 delivers modulo timing; and SCI includes LIN extensions for automotive sub-networks.

Key Specifications

Pinout & Package

MC9S08FL8CLCR is packaged in a 32-pin LQFP (8 mm × 8 mm, 0.8 mm pitch) compliant with JEDEC MO-220. Pin functions are shared across multiple peripheral modules with priority-based assignment per Table 1 of the datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC9S08FL8CLCR, MC9S08FL16CLCR offers double flash/RAM in identical packaging for seamless firmware growth, while S9KEAZ128AMLH provides ARM-based performance and CAN support at the cost of architectural discontinuity and higher BOM complexity.

Availability

MC9S08FL8CLCR is available at Aetrix Electronics and suitable for industrial sensor nodes, home appliance motor controls, automotive body electronics, and smart power outlets requiring stable component supply and long-term manufacturability.

Supply support for MC9S08FL8CLCR 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 MC9S08FL8CLCR belongs to the S08FL family designed for cost-optimized, low-power embedded control in resource-constrained systems where deterministic real-time behavior and debug simplicity are critical.

FAQ

What is the maximum operating frequency of the MC9S08FL8CLCR CPU core?

The MC9S08FL8CLCR CPU core runs at up to 20 MHz across its full operating voltage (4.5–5.5 V) and temperature (–40 °C to 85 °C) range. This frequency is achieved using the internal clock source (ICS) with FLL enabled and appropriate trim settings. Bus clock frequency is derived from the CPU clock and limited to 10 MHz per specification.

Does the MC9S08FL8CLCR support in-circuit debugging, and what interface is used?

Yes, the MC9S08FL8CLCR supports in-circuit debugging via a single-wire background debug interface (BDC) using the PTA4/BKGD pin. This eliminates the need for multi-pin debug headers and allows breakpoint setting, memory inspection, and register access during live operation without halting the entire system.

What are the low-power modes supported by the MC9S08FL8CLCR, and what is the lowest current draw?

The MC9S08FL8CLCR supports Run, Wait, Stop2, and Stop3 low-power modes. Stop2 draws 1.06 μA and Stop3 draws 1.17 μA (at 5 V, –40 °C to 85 °C). Additional peripherals like ADC or LVD can be enabled in Stop3, increasing current by up to ~325 μA total depending on configuration.

Can the MC9S08FL8CLCR's ADC operate while the MCU is in Stop mode?

Yes, the MC9S08FL8CLCR's 12-channel 8-bit ADC is fully functional in Stop3 mode. Conversion results are stored in registers accessible upon wake-up, enabling ultra-low-power sensor sampling without CPU intervention-critical for battery-powered monitoring applications.

Is the MC9S08FL8CLCR pin-compatible with other devices in the S08FL family?

Yes, the MC9S08FL8CLCR is pin-compatible with the MC9S08FL16CLCR in the same 32-pin LQFP package. Both share identical pin assignments, peripheral mappings, and electrical characteristics, allowing direct replacement when firmware fits within the 8 KB flash limit of the MC9S08FL8CLCR.