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Product Detailed Parameters
- Description：IC MCU 8BIT 8KB FLASH 32LQFP
- Series：C8051F2xx
- Mfr：Silicon Labs
- Package：Tray
- Core Processor：8051
- Core Size：8-Bit
- Speed：25MHz
- Connectivity：SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, POR, WDT
- Number of I/O：22
- Program Memory Size：8KB (8K x 8)
- Program Memory Type：FLASH
- EEPROM Size：-
- RAM Size：256 x 8
- Voltage - Supply (Vcc/Vdd)：2.7V ~ 3.6V
- Data Converters：A/D 22x8b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：32-LQFP (7x7)
- Package / Case：32-LQFP
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Overview
The C8051F221-GQ is an 8-bit microcontroller from the Silicon Labs C8051F2xx series, featuring a fully integrated mixed-signal system-on-chip design. It utilizes a standard 8051-compatible core operating at a maximum clock frequency of 25 MHz. The device includes 8 kB of in-system programmable Flash memory and 256 bytes of RAM. It provides 22 general-purpose I/O pins and supports a wide operating voltage range of 2.7 V to 3.6 V. The component is housed in a 32-lead LQFP package with dimensions suitable for surface-mount applications.
Feature Summary
- Integrates hardware UART and SPI serial interfaces for direct communication without software bit-banging
- Supports non-invasive, full-speed online debugging via JTAG without requiring external emulators
- Includes on-board voltage monitor, watchdog timer, and clock oscillator for system stability
Applications
- Embedded systems requiring in-circuit reprogrammable Flash storage
- Industrial control applications utilizing hardware serial interfaces
- Battery-powered devices operating within specified voltage ranges
Procurement Notes
Verify the specific suffix against official documentation to confirm package type and temperature rating. Confirm current production status as availability may vary by region. Ensure compatibility with existing development tools and debuggers before procurement.
Selection Notes
Select this model for applications needing a complete mixed-signal solution with integrated peripherals. Consider the 22 I/O count and 8 kB memory limits for code size and pin requirements. Verify that the 25 MHz speed meets real-time processing needs.
Part Context
This part belongs to the C8051F2xx family of fully integrated mixed-signal MCUs. The series offers various ADC resolutions and I/O configurations while maintaining a consistent 8051 core architecture and Flash programming interface across different package options.
Replacement Considerations
Check for other members of the C8051F2xx series with identical memory sizes but different I/O counts or ADC channels. Verify pin compatibility if substituting with variants in different packages such as TQFP.
