M058SFAN Datasheet, PDF (48/72 Pages) List of Unclassifed Manufacturers – 32-bit Microcontroller

NuMicro M058S Series Datasheet
6.11 I²C Serial Interface Controller (I²C)
6.11.1 Overview
I²C is a two-wire, bi-directional serial bus that provides a simple and efficient method of data
exchange between devices. The I²C standard is a true multi-master bus including collision
detection and arbitration that prevents data corruption if two or more masters attempt to control
the bus simultaneously. There are two sets of I²C which supports Power-down wake up function.
6.11.2 Features
The I²C bus uses two wires (SDA and SCL) to transfer information between devices connected to
the bus. The main features of the I²C bus include:
 Supports up to two I²C ports
 Master/Slave mode
 Bidirectional data transfer between master and slave
 Multi-master bus (no central master)
 Arbitration between simultaneously transmitting masters without corruption of serial data on
the bus
 Serial clock synchronization allowing devices with different bit rates to communicate via one
serial bus
 Serial clock synchronization used as a handshake mechanism to suspend and resume serial
transfer
 Built-in a 14-bit time-out counter requesting the I²C interrupt if the I²C bus hangs up and
timer-out counter overflows.
 Programmable clocks allowing for versatile rate control
 Supports 7-bit addressing mode
 Supports multiple address recognition ( four slave address with mask option)
 Supports Power-down Wake-up function
Nov. 27, 2014
Page 48 of 72
Rev.1.03