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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 24QFN
- 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-QFN (4x4)
- Package / Case：24-WFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The C8051F997-GMR is an 8-bit microcontroller from the Silicon Labs C8051F99x series, featuring a high-performance 8051 core operating at up to 25 MHz. It integrates 8 kB of in-system programmable Flash memory and 512 bytes of RAM. The device includes 14 channels of CapSense capability for touch sensing applications. Connectivity options include Enhanced SPI, Enhanced UART, I2C, and SMBus interfaces. It operates within a supply voltage range of 1.8 V to 3.6 V and supports surface-mount packaging.
Feature Summary
- Integrates 14-channel CapSense functionality for capacitive touch sensing without external components.
- Features ultra-low power consumption with sleep modes as low as 10 nA with memory retention.
- Includes built-in LDO regulator allowing operation from supply voltages down to 1.8 V.
- Provides fast wakeup time of 2 µs for responsive low-power system management.
Applications
- Battery-powered portable devices requiring extended standby life
- Capacitive touch interface controllers for consumer electronics
- Low-power sensor nodes and IoT endpoints
- Embedded systems with strict power budget constraints
Procurement Notes
Verify the specific suffix 'GMR' indicates tape and reel packaging when sourcing. Confirm RoHS compliance status through official Silicon Labs documentation or authorized distributor datasheets prior to procurement. Ensure the ordering part number matches the exact package type and temperature grade required for your design specifications.
Selection Notes
Select this component if the application requires integrated capacitive sensing alongside standard 8051 processing capabilities. Compare against the C8051F990-C-GMR if fewer CapSense channels are sufficient. Consider the C8051F930 series if higher Flash capacity and ADC resolution are prioritized over touch sensing features. Evaluate power requirements against the 150 µA/MHz active mode current specification.
Part Context
This part belongs to the C8051F99x/C8051F98x family of ultra-low power 8-bit MCUs. These devices are designed for applications demanding minimal power consumption while maintaining robust peripheral integration. The family shares common architectural features but varies in Flash size, CapSense channel count, and package options to suit different form factors.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material. Consult Silicon Labs documentation for pin-compatible alternatives within the C8051F9xx series that offer similar CapSense channel counts and memory configurations.
