C8051F338-GM

Overview

The C8051F338-GM is a mixed-signal System-on-a-Chip microcontroller from Silicon Labs, belonging to the C8051F33x family. It features a high-speed pipelined 8051-compatible core delivering up to 25 MIPS at a 25 MHz clock frequency. The device integrates 16 kB of in-system programmable Flash memory and 768 bytes of internal data RAM. Key analog peripherals include a 10-bit ADC with up to 200 ksps sampling rate and a 10-bit current output DAC. Digital interfaces encompass hardware-enhanced UART, SMBus/I2C, and SPI. It operates within a supply voltage range of 2.7 V to 3.6 V and supports an industrial temperature range of –40 °C to +85 °C.

Feature Summary

• Integrates a high-speed pipelined 8051-compatible microcontroller core for efficient instruction execution.
• Includes on-chip non-intrusive debug circuitry facilitating full-speed in-system debugging without external emulators.
• Features a 10-bit analog-to-digital converter with multiplexer support and a 10-bit current output digital-to-analog converter.
• Provides flexible pin assignment through a programmable digital crossbar and multiple serial communication interfaces.

Applications

• Battery-powered sensor nodes requiring low-power operation
• Industrial control systems utilizing analog signal processing
• Portable instrumentation devices

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm package type matches the required QFN footprint. Ensure the specific revision level aligns with design requirements, as older revisions may carry discontinuation notices. Validate that the ordering suffix corresponds to the correct tape-and-reel or tube packaging configuration for your assembly line.

Selection Notes

Select this component when a fully integrated mixed-signal solution is needed without external ADC/DAC components. Consider the 25 MIPS throughput and 16 kB Flash capacity for moderate complexity firmware. Evaluate the 2.7 V to 3.6 V operating range against system power rails. Check if the available GPIO count and peripheral set meet interface requirements before finalizing the design.

Part Context

This device is part of the C8051F33x series of byte-programmable EPROM MCUs. It shares architectural similarities with the C8051F330 family but offers enhanced analog integration. The C8051F338 variant specifically includes the 10-bit ADC and DAC found in the F336/8 models, distinguishing it from the F337/9 variants which lack these analog peripherals.

Replacement Considerations

Direct pin-compatible replacements within the same family include the C8051F336-GM. Verify functional equivalence regarding the presence of the ADC and DAC modules, as these are absent in the C8051F337 and C8051F339 counterparts.