This document describes the features and characteristics of the Small Form Factor product introduced by Silicon Laboratories in 2005. The product is a mixed-signal MCU with 2 kB Flash memory, 10-bit ADC, and a 24.5 MHz system clock.
The C8051F334 is a 20‑pin mixed‑signal microcontroller featuring a 25 MIPS 8051 core, 2 kB Flash, 768 bytes of RAM and a 10‑bit ADC with up to 200 ksps throughput. It includes analog peripherals such as a programmable ADC, comparator, temperature sensor, and on‑chip debug circuitry for full‑speed, non‑intrusive debugging.
The device supports multiple digital interfaces (UART, SPI, SMBus/I²C), 17 I/O ports, programmable timers, and flexible clock sources with internal oscillators and external crystal options. Electrical specifications, package details, and pin assignments are provided for design integration.
| Supply Voltage | 2.7 V to 3.6 V |
|---|---|
| Typical Operating Current | 6.4 mA at 25 MHz |
| Stop‑Mode Current | < 0.1 pA |
| Temperature Range | ‑40 °C to +85 °C |
| Flash Memory | 2 kB |
| Data RAM | 768 bytes |
| ADC Resolution | 10 bits |
| ADC Throughput | up to 200 ksps |
| I/O Ports | 17 ports (5 V tolerant) |
| Package Type | 20‑Pin QFN (lead‑free) |
The device operates from 2.7 V to 3.6 V.
It includes 2 kB of on‑chip flash memory.
The ADC provides a 10‑bit resolution.
The microcontroller offers 17 I/O ports, all 5 V tolerant.