IS32CS8979-QWLA3-TR

Application Specific Microcontrollers Overview

The IS32CS8979 is an automotive-grade integrated circuit combining a 1-cycle 8051 MCU with an 18-channel LED driver. The MCU features a 32MHz core, 64KB e-Flash with ECC, and 2KB SRAM/XRAM with ECC protection. It includes three independent watchdog timers, a checksum/CRC accelerator, and various peripherals such as I2C, SPI, EUART/LIN, and a capacitance sense touch-key controller. The LED driver provides 18 constant current sources up to 60mA each with 40V tolerance voltage. It supports 8-bit PWM per channel, 8-bit dot correction for RGB accuracy, and spread-spectrum EMI reduction. The device operates on a single supply of 2.7V to 5.5V and is housed in a wettable flank WQFN-40 package.

Application Specific Microcontrollers Feature Summary

• Integrated 1-cycle 8051 CPU (up to 32MHz) with 64KB e-Flash and 2KB RAM, both featuring ECC protection
• 18-channel LED driver with 60mA output current per channel and 40V tolerance voltage
• Advanced lighting control including 8-bit PWM, 8-bit dot correction, and spread-spectrum EMI reduction
• Automotive qualification (AEC-Q100) with operation temperature range from -40°C to 125°C

Application Specific Microcontrollers Applications

• Automotive ambient lighting
• Dome lighting systems
• Tail light animations
• Welcome lighting functions

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and tape/reel specifications. Confirm that the component meets AEC-Q100 requirements for the intended automotive application environment. Check the datasheet for recommended land pattern dimensions for the WQFN-40 package to ensure proper PCB layout and thermal management.

Application Specific Microcontrollers Selection Notes

Select this component when a combined MCU and high-channel-count LED driver is required for automotive lighting. Ensure the design utilizes the 2.7V to 5.5V supply range. Consider the 18-channel output capacity and 60mA per channel limit for load calculations. Verify interface compatibility with host controllers using I2C, SPI, or UART/LIN protocols.

Application Specific Microcontrollers Part Context

The IS32CS8979 belongs to the Lumissil Microsystems IS32CS series of automotive microcontrollers. It is designed specifically for applications requiring integrated control and power driving capabilities in harsh environments. The device integrates robust memory protection features like ECC to enhance reliability in automotive systems.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult the manufacturer's documentation for potential cross-references or updated product line information.