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Product Detailed Parameters
- Description：IC MCU 8BIT 4KB FLASH 24SSOP
- Series：C8051F85x
- Mfr：Silicon Labs
- Package：Tube
- Core Processor：8051
- Core Size：8-Bit
- Speed：25MHz
- Connectivity：I2C, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O：16
- Program Memory Size：4KB (4K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：512 x 8
- Voltage - Supply (Vcc/Vdd)：2.2V ~ 3.6V
- Data Converters：-
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：-
- Package / Case：24-SSOP (0.154", 3.90mm Width)
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Overview
The C8051F854-C-GU is an 8-bit microcontroller from the Silicon Labs C8051F85x family, featuring a high-speed CIP-51 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 a 12-bit ADC with up to 16 input channels, two analog comparators, and multiple communication peripherals including UART, I2C/SMBus, and SPI. Powered by a 2.2 V to 3.6 V supply, it operates within a -40°C to +85°C temperature range and is housed in a 24-pin QSOP package.
Feature Summary
- High-speed CIP-51 core delivering up to 25 MIPS throughput
- Integrated 12-bit ADC supporting up to 16 input channels
- On-chip debug circuitry for non-intrusive system debugging
- Flexible I/O with 5 V-tolerant pins and digital crossbar
Applications
- Industrial control systems
- Sensor signal processing
- Portable instrumentation
- Battery-powered devices
Procurement Notes
Verify the specific suffix 'GU' corresponds to the 24-pin QSOP package and commercial temperature grade (-40°C to +85°C). Confirm that the component status is acceptable for your design lifecycle, as this series may be marked Not Recommended for New Designs. Ensure voltage levels match the 2.2 V to 3.6 V operating range.
Selection Notes
Select this MCU when a cost-effective 8-bit solution with mixed-signal capabilities is required. The CIP-51 core offers enhanced performance over standard 8051 architectures. Consider the integrated ADC and comparator resources if external analog components can be eliminated. Verify pin count requirements against the 18 available I/O pins in the 24-pin QSOP package.
Part Context
This component belongs to the C8051F85x/86x low-cost 8-bit MCU family. These devices are designed for applications requiring moderate processing power and integrated analog peripherals. The family shares architectural similarities but varies in memory size and I/O count. The C8051F854 variant specifically provides 8 kB of Flash and 512 bytes of RAM.
Replacement Considerations
Check for EFM8BB51 series alternatives which offer similar functionality in newer packages. Verify compatibility with existing firmware due to potential differences in peripheral registers or clock configurations between generations.
