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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 24QSOP
- Series：C8051F9xx
- Mfr：Silicon Labs
- Package：Tape & Reel (TR)
- Core Processor：CIP-51 8051
- Core Size：8-Bit
- Speed：25MHz
- Connectivity：SMBus (2-Wire/I2C), SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, Cap Sense, POR, PWM, WDT
- Number of I/O：17
- Program Memory Size：8KB (8K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：512 x 8
- Voltage - Supply (Vcc/Vdd)：1.8V ~ 3.6V
- Data Converters：-
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：24-QSOP
- Package / Case：24-SSOP (0.154", 3.90mm Width)
- Grade：-
- Qualification：-
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Overview
The C8051F997-GUR is an 8-bit microcontroller from the Silicon Labs C8051F9xx family, featuring a CIP-51 core operating at up to 25 MHz. It integrates 8 KB of flash memory and 512 bytes of RAM within a 24-QSOP package. The device supports ultra-low power consumption with active current as low as 150 µA/MHz and sleep modes down to 10 nA. It includes capacitive sensing capabilities, internal oscillators, and standard interfaces such as SPI, UART, and I2C/SMBus.
Feature Summary
- Ultra-low power architecture with nanosecond wakeup times and minimal sleep mode current draw
- Integrated capacitive sensing engine for high-sensitivity touch detection
- On-chip LDO regulator supporting wide supply voltage ranges
- Comprehensive peripheral set including temperature sensors and watchdog timers
Applications
- Battery-powered wearable devices requiring extended operational life
- Consumer electronics utilizing capacitive touch user interfaces
- Industrial sensor nodes demanding low standby power consumption
- Portable medical equipment with strict energy efficiency constraints
Procurement Notes
Verify component authenticity through authorized Silicon Labs distributors or certified partners. Confirm package integrity and moisture sensitivity level handling procedures upon receipt. Ensure compatibility with existing firmware environments before integration. Request official datasheets and errata documents for final design validation. Maintain proper storage conditions to preserve component reliability.
Selection Notes
Select this model when ultra-low power operation and integrated capacitive sensing are primary requirements. Consider the 24-QSOP package constraints for PCB layout optimization. Evaluate the 8 KB flash capacity against application code size needs. Verify that the 25 MHz maximum clock speed meets real-time processing demands. Assess thermal performance within the specified -40°C to 85°C operating range.
Part Context
The C8051F997-GUR belongs to the C8051F9xx series of ultra-low power microcontrollers designed by Silicon Labs. This family emphasizes energy efficiency while maintaining robust processing capabilities. The CIP-51 core provides enhanced performance compared to traditional 8051 architectures. The series targets applications where power conservation and touch interface integration are critical design factors.
Replacement Considerations
Public confirmed substitute part numbers include EFM8BB51F8G-C-TSSOP20R from Silicon Labs. Verify functional equivalence regarding pinout, memory size, and peripheral availability. Review updated feature sets and package dimensions for mechanical compatibility. Consult official replacement guides for migration support and firmware adaptation requirements.
