C8051F580-IMR

Overview

The C8051F580-IMR is a mixed-signal ISP Flash microcontroller from Silicon Labs, featuring a high-speed 8051 core with up to 50 MIPS throughput at a 50 MHz clock. It integrates 128 kB of banked Flash memory and 8448 bytes of internal data RAM (256 + 8192 XRAM). The device includes a 12-bit ADC supporting up to 32 external single-ended inputs and 200 ksps conversion rates, alongside three comparators and a built-in temperature sensor. Digital peripherals include CAN 2.0, LIN 2.1 controllers, two UARTs, SMBus, and enhanced SPI. It operates on a supply voltage of 1.8 V to 5.25 V and supports automotive qualification within a -40 °C to +125 °C temperature range.

Feature Summary

• High-Speed 8051 Core: Pipelined architecture executing 70% of instructions in 1 or 2 system clocks for up to 50 MIPS throughput.
• Mixed-Signal Peripherals: Includes a 12-bit ADC with up to 32 inputs, three programmable comparators, and an internal temperature sensor.
• Digital Connectivity: Features hardware-enhanced CAN 2.0 and LIN 2.1 controllers without requiring external crystals, plus dual UARTs and SPI.
• On-Chip Debug: Facilitates full-speed, non-intrusive in-system debugging via the C2 interface without needing separate emulator chips.

Applications

• Automotive embedded systems requiring CAN and LIN bus communication
• Industrial control applications utilizing mixed-signal processing
• Smart sensors integrating analog acquisition with digital logic

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific package markings corresponding to the IMR suffix. Review the latest datasheet revision for any errata or design warnings, as this family may be marked not recommended for new designs.

Selection Notes

Select this MCU when a robust 8051 architecture with extensive analog integration is required. Ensure the 128 kB Flash capacity meets application code storage needs. Verify that the 40 I/O lines fit the pinout constraints. Consider power consumption profiles, noting typical operating current at maximum frequency, if battery operation is a factor.

Part Context

This part belongs to the C8051F58x/F59x family of mixed-signal ISPs. It shares architectural similarities with other members like the C8051F586 but offers distinct memory sizes and I/O counts. The family emphasizes high performance and low cost development through integrated debug capabilities.

Replacement Considerations

Consult official substitution guides for compatible parts within the C8051F5xx series. Verify pin compatibility and peripheral availability before replacing. Check for updated recommendations as older families may have successors.

FAQ

Does the C8051F580 require an external crystal for CAN and LIN operation?

No, the device features an internal 24 MHz oscillator with ±0.5% accuracy sufficient for CAN and master LIN operation without an external crystal.

What is the maximum sampling rate of the onboard ADC?

The 12-bit ADC supports a maximum sampling rate of up to 200 ksps.