C8051F335-GMR

Overview

The C8051F335-GMR is a mixed-signal ISP Flash microcontroller from Silicon Labs, part of the C8051F33x family. It features an 8051-compatible core operating at up to 25 MHz with 25 MIPS throughput. The device includes 2 kB of in-system programmable Flash memory and 768 bytes of internal data RAM. Key peripherals include four 16-bit counter/timers, a Programmable Counter Array (PCA), and serial interfaces such as UART, SMBus, and SPI. It operates within a supply voltage range of 2.7 V to 3.6 V and supports temperatures from -40 °C to +85 °C.

Feature Summary

• Integrated high-speed 8051 microcontroller core with pipelined architecture for efficient instruction execution.
• On-chip debug circuitry enabling full-speed, non-intrusive in-system debugging without external emulators.
• In-system programmable Flash memory allowing field upgrades and non-volatile data storage.
• Comprehensive analog and digital peripheral set including timers, PCA, and multiple serial communication ports.

Applications

• Battery-powered sensor nodes requiring low power consumption
• Industrial control systems utilizing serial communication protocols
• Embedded applications needing in-circuit reprogrammability

Procurement Notes

Verify component authenticity through authorized channels. Confirm package integrity and pin alignment against the QFN-20 specification. Ensure compatibility with existing firmware architectures due to the specific memory configuration. Check for end-of-life status or obsolescence notices prior to final design approval.

Selection Notes

Select this model when 2 kB of Flash memory suffices for application code. Suitable for designs requiring 17 I/O pins with 5 V tolerance. Consider alternative variants if higher ADC resolution or larger memory capacity is required. Verify that the 25 MHz clock speed meets real-time processing requirements.

Part Context

This component belongs to the C8051F33x series of mixed-signal microcontrollers. It shares the same core architecture and peripheral suite as other members like the C8051F330 and C8051F331, differing primarily in Flash memory size. The series is designed for cost-sensitive, high-performance embedded applications.

Replacement Considerations

Direct substitutes within the same family include C8051F330, C8051F331, C8051F332, C8051F333, and C8051F334. Note that these variants have different Flash capacities (8 kB or 4 kB) but maintain pin compatibility and functional equivalence.

FAQ

Does the C8051F335-GMR include an on-chip ADC?

No, the C8051F335 variant does not include the 10-bit ADC found in the C8051F330/2/4 models. It focuses on digital I/O and standard peripherals.

What is the maximum operating frequency of the core?

The CIP-51 microcontroller core operates at a maximum frequency of 25 MHz, delivering up to 25 MIPS throughput.