I2C

High‑Speed I2C Master – Precision, Reliability, and Compactness

The I2C module implements the I²C protocol as a dedicated master interface, enabling rapid, low‑pin communication with a wide array of peripherals such as sensors, EEPROMs, and RTCs. With open‑drain signalling and configurable pull‑up resistors, the design supports multi‑master environments while maintaining signal integrity on both 2.5 V to 5.5 V supply rails. The compact footprint and minimal external component requirement reduce PCB area and simplify integration into embedded systems.

• Key Spec 1: Dual‑mode bus speed – Standard Mode (100 kHz) and Fast Mode (400 kHz), with optional 1 MHz Fast‑Mode Plus support.
• Key Spec 2: Wide voltage range – 2.5 V to 5.5 V supply compatibility with 0‑level and 2.5‑level logic tolerance.
• Key Spec 3: Low pin count – 2‑lead interface (SCL, SDA) plus ground, enabling ultra‑compact layouts.
• Common Use Case: Seamless sensor integration in microcontroller projects (e.g., accelerometers, temperature & humidity sensors) and high‑capacity memory access such as EEPROM or RAM modules.