C8051F505-IQR

Overview

The C8051F505-IQR is an 8-bit mixed-signal microcontroller from the Silicon Labs C8051F50x family, featuring a high-speed pipelined 8051 core operating at up to 50 MHz. It integrates 32 kB of in-system programmable Flash memory and 4352 bytes of internal data RAM (256 + 4096 XRAM). The device includes a 12-bit ADC with up to 32 external single-ended inputs, two voltage comparators, and a built-in temperature sensor. Digital peripherals include CAN 2.0, LIN 2.1, SMBus, SPI, UART, four 16-bit timers, and a PCA. It operates on a supply voltage of 1.8 V to 5.25 V and supports automotive qualification with a temperature range of –40 °C to +125 °C.

Feature Summary

• Integrates a high-speed 8051 core with pipelined architecture for up to 50 MIPS throughput.
• Includes on-chip debug circuitry for full-speed, non-intrusive in-system debugging without external emulators.
• Features a 12-bit ADC with selectable gain and programmable window detector capabilities.
• Supports automotive applications with AEC-Q100 compliance and extended temperature range.

Applications

• Automotive embedded systems requiring CAN and LIN communication
• Industrial control systems utilizing mixed-signal processing
• Smart sensors with integrated analog-to-digital conversion

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the 48-pin QFP/QFN specifications. Ensure compatibility with existing design files by cross-referencing the latest datasheet revision. Check for any product change notices regarding assembly or material updates before finalizing procurement orders.

Selection Notes

Select this model when 32 kB of Flash memory suffices for application code. Choose the IQR suffix specifically for the 48-pin QFP package variant. Consider alternative models within the F50x family if different I/O counts or memory sizes are required. Verify that the 1.8 V to 5.25 V supply range aligns with system power constraints.

Part Context

This component belongs to the C8051F50x/F51x mixed-signal ISP Flash MCU family. It shares architectural similarities with other members like the C8051F500 and C8051F506 but differs in specific memory configurations and package options. The family emphasizes high integration with onboard peripherals, reducing external component count for mixed-signal designs.

Replacement Considerations

Public confirmed substitute part numbers: C8051F500-IQR, C8051F501-IQR, C8051F504-IQR.