DS28E17 1-Wire-to-I2C Master Bridge

Maxim¡¯s DS28E17 is a 1-wire slave to I2C master bridge device

Maxim¡¯s DS28E17 is a 1-wire slave to I2C master bridge device that interfaces directly to I2C slaves at standard (100 kHz maximum) or fast (400 kHz maximum). Data transfers serially by means of the 1-wire protocol, which requires only a single data lead and a ground return. Every DS28E17 is guaranteed to have a unique 64-bit ROM registration number that serves as a node address in the 1-wire network. Multiple DS28E17 devices can coexist with other devices in the 1-wire network and be accessed individually without affecting other devices. The DS28E17 allows using complex I2C devices such as display controllers, ADCs, DACs, I2C sensors, and more in a 1-wire environment. Each self-timed DS28E17 provides 1-wire access for a single I2C interface.

Features

• Converts 1-wire communication protocol to I2C master I/O

• Operates I2C slave peripherals over the single-contact, 1-wire interface

• Flexible 1-wire slave and I2C master operational modes

• Supports 15 kbps and 77 kbps 1-wire protocol with packetized I2C data payloads

• Factory-programmed, unique 64-bit 1-wire ROM ID provides unalterable serial number to end equipment

• Standard 100 kHz and 400 kHz communication rates for I2C

• I2C clock stretching automatically supported

• Low power consumption

• 0.3 ¦ÌA (typ) in sleep mode

• 2.6 mA (typ) when operational

• Separate pins for sleep and wakeup flexibility

• Remote power controlled by an awake pin

• Sleep mode enabled by sleep pin or a 1-wire device command

• Easy to integrate

• 3.3 V(nom) supply, small 4 mm x 4 mm x 0.75 mm TQFN package, -40¡ãC to +85¡ãC operation

• Evaluation HW and SW available

1-Wire-to-I2C Master Bridge

	ͼƬ	ÖÆÔìÉÌÁã¼þ±àºÅ	ÃèÊö	ЭÒé	¹¦ÄÜ	¿É¹©»õÊýÁ¿
		DS28E17Q+	IC I2C TO 1-WIRE BRIDGE 16TQFN	1-Wire®	ÇÅ£¬ 1-Wire® ÖÁ I2C	57 - Á¢¼´·¢»õ 5925 - ³§·½¿â´æ