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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, 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
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Overview
The C8051F987-C-GM is an 8-bit microcontroller from the Silicon Labs C8051F9xx series, utilizing the CIP-51 core architecture. It features 8KB of in-system programmable Flash memory and 512 bytes of RAM. The device operates at speeds up to 25MHz with an internal oscillator and supports a supply voltage range of 1.8V to 3.6V. It includes 17 general-purpose I/O pins and integrates communication interfaces such as SMBus, SPI, and UART/USART. Packaged in a 24-QFN (4x4) format, it functions within a temperature range of -40°C to 85°C.
Feature Summary
- Integrates capacitive sensing capabilities for touch interface applications
- Combines high-performance 8051 processing with mixed-signal peripherals
- Supports in-system programming via standard debug adapters
Applications
- Capacitive touch sensor controllers
- Low-power embedded control systems
- Mixed-signal data acquisition modules
Procurement Notes
Verify component authenticity through authorized distributors due to discontinued status. Confirm package marking and revision level against official errata documents. Ensure ESD handling protocols are followed during storage and assembly. Cross-reference pinouts with current datasheets to avoid compatibility issues with legacy designs.
Selection Notes
Select this model when specific capacitive sensing integration is required alongside standard 8051 functionality. Compare pin counts and peripheral sets against alternatives like the C8051F989 if additional I/O is needed. Evaluate power consumption requirements against the 1.8V to 3.6V operating range. Consider package size constraints relative to the 24-QFN footprint.
Part Context
This component belongs to the C8051F9xx family of ultra-low-power microcontrollers designed by Silicon Labs. It shares architectural similarities with other members like the C8051F980 and C8051F985 but distinguishes itself through integrated capacitive sensing features. The series targets applications requiring efficient mixed-signal processing in compact packages.
Replacement Considerations
No direct public substitute part numbers are confirmed for this specific variant. Review the C8051F989-GM for similar I/O counts or the C8051F985 series for comparable flash sizes, noting differences in capacitive sensing support.
