Overview
The C8051F321-GMR is a high-performance, 8-bit microcontroller from Silicon Labs, part of the C8051F32x family. This device is built around a pipelined 8051-compatible microcontroller core, offering up to 25 MIPS throughput with a 25 MHz clock. It features a robust set of analog and digital peripherals, making it suitable for a wide range of applications. The microcontroller is available in a 28-pin QFN package and is RoHS compliant, operating within a temperature range of –40 to +85 °C.
Key Specifications
| Parameter | Specification |
|---|---|
| MCU Core | 8051 |
| Maximum Clock Speed | 25 MHz |
| Flash Memory | 16 kB |
| RAM | 2.25 kB (including 1 kB USB FIFO) |
| ADC | 10-bit, 13 channels, up to 200 ksps |
| DAC | — |
| Comparators | 2 |
| PCA Channels | 5 |
| Timers | 4 (16-bit counter/timers) |
| USB | Yes, USB 2.0 compliant (full speed and low speed) |
| Digital I/O Pins | 21 |
| Package Type | 28-pin QFN |
| Package Size | 5x5 mm |
Key Features
- Pipelined Instruction Architecture: Executes 70% of instructions in 1 or 2 system clocks, achieving up to 25 MIPS throughput.
- Analog Peripherals: Includes a 10-bit ADC with up to 13 external single-ended or differential inputs, two comparators, and an internal voltage reference.
- USB Function Controller: Compliant with USB 2.0, supporting full speed (12 Mbps) and low speed (1.5 Mbps) operation without requiring an external crystal.
- On-Chip Debug: Non-intrusive in-system debug interface, facilitating full-speed debugging without an emulator.
- Digital Peripherals: Features hardware-enhanced SPI, UART, SMBus, and four 16-bit counter/timers.
- Clock Sources: Supports internal oscillator, external oscillator (crystal, RC, C, or clock), and on-the-fly clock source switching.
- Voltage Regulator: Input voltage range of 4.0 to 5.25 V with built-in voltage regulator.
Applications
The C8051F321-GMR is versatile and can be used in various applications, including:
- Industrial Automation: For control and monitoring systems due to its robust analog and digital capabilities.
- Consumer Electronics: In devices requiring USB connectivity and advanced peripheral support.
- Medical Devices: Where precise analog measurements and reliable digital control are necessary.
- Automotive Systems: For applications needing high reliability and a wide operating temperature range.
Q & A
- What is the maximum clock speed of the C8051F321-GMR?
The maximum clock speed is 25 MHz. - How much flash memory does the C8051F321-GMR have?
The device has 16 kB of flash memory. - What is the resolution and sampling rate of the ADC?
The ADC is 10-bit with a sampling rate of up to 200 ksps. - Does the C8051F321-GMR support USB?
Yes, it supports USB 2.0 with full speed and low speed operation. - What is the operating temperature range of the C8051F321-GMR?
The operating temperature range is –40 to +85 °C. - What package types are available for the C8051F321-GMR?
The device is available in a 28-pin QFN package. - Does the C8051F321-GMR have on-chip debug capabilities?
Yes, it features non-intrusive in-system debug interface. - How many digital I/O pins does the C8051F321-GMR have?
The device has 21 digital I/O pins. - What are the key analog peripherals of the C8051F321-GMR?
The key analog peripherals include a 10-bit ADC, two comparators, and an internal voltage reference. - Can the C8051F321-GMR switch between different clock sources?
Yes, it can switch between internal and external clock sources on-the-fly.
