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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 24QFN
- Series：C8051F9xx
- Mfr：Silicon Labs
- Package：Tube
- 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-QFN (4x4)
- Package / Case：24-WFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The C8051F997-GM is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, featuring a CIP-51 core operating at up to 25 MHz. It integrates 8 KB of in-system programmable Flash memory and 1 KB of RAM. The device includes a 12-bit ADC, CapSense interface for capacitive touch sensing, and multiple communication peripherals including SPI, I2C, and UART. It operates within a voltage range of 1.8 V to 3.6 V and is housed in a 24-QFN package.
Feature Summary
- Integrates CapSense technology for capacitive touch sensing applications
- Includes a high-resolution 12-bit analog-to-digital converter
- Supports in-system programming via standard debug interfaces
Applications
- Capacitive touch sensor controllers
- Low-power embedded control systems
- Battery-operated devices requiring efficient power management
Procurement Notes
Verify the specific revision level (Rev A or B) against the latest errata documents provided by Silicon Labs before finalizing design integration. Confirm that the 24-QFN package dimensions match your PCB footprint requirements. Ensure supply chain sources provide genuine components with traceable manufacturing dates to avoid counterfeit risks.
Selection Notes
Select this component when a balance of moderate Flash capacity and integrated capacitive sensing capabilities is required. It is suitable for designs needing a single-chip solution for both control logic and touch input processing. Consider the 25 MHz speed limit and 12-bit ADC resolution against application performance needs.
Part Context
This part belongs to the C8051F9xx family of ultra-low-power 8-bit MCUs. These devices are designed for applications demanding low power consumption and integrated peripheral sets. The C8051F997 variant specifically targets markets requiring capacitive touch functionality alongside standard microcontroller operations.
Replacement Considerations
Check for C8051F997-C-GM as a potential alternative if commercial temperature ratings are required instead of industrial ratings. Verify pin compatibility and software compatibility before substituting.
