DS28E17 Datasheet, PDF (1/27 Pages) Maxim Integrated Products – Low Power Consumption

DS28E17
1-Wire-to-I²C Master Bridge
General Description
The DS28E17 is a 1-Wire slave to I²C master bridge
device that interfaces directly to I²C slaves at standard
(100kHz max) or fast (400kHz max). Data transfers seri-
ally 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 net-
work. Multiple DS28E17 devices can coexist with other
devices in the 1-Wire network and be accessed individu-
ally without affecting other devices. The DS28E17 allows
using complex I²C devices such as display controllers,
ADCs, DACs, I²C sensors, etc. in a 1-Wire environment.
Each self-timed DS28E17 provides 1-Wire access for a
single I²C interface.
Applications
●● Accessory Identification and Control
●● I²C Sensors
●● Display Controllers
●● ADCs/DACs
Ordering Information appears at end of data sheet.
Benefits and 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 15kbps and 77kbps 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 100kHz and 400kHz Communication
Rates for I²C
• I²C Clock Stretching Automatically Supported
●● Low Power Consumption
• 0.3µA (typ) in Sleep Mode
• 2.6mA (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
• 3.3V(nom) Supply, Small 4mm x 4mm x 0.75mm
TQFN package, -40°C to +85°C Operation
• Evaluation HW and SW Available
Typical Operating Circuit
VDD
VDD
VDD
GPIO
µC
RPUP
VDD
RESET
SCL
IO
SDA
AWAKE
DS28E17
WAKEUP BUSY
SLEEP
XD
ED
REG18
GND
VDD
SCL
SDA
SLP_N
I²C SLAVE
GND
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
19-7681; Rev 0; 7/15