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 |
|
|
- Low power consumption
- 0.3 µA (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°C to 85°C operation
- Evaluation HW and SW available
|
|
- 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
- Converts 1-wire communication protocol to I2C master I/O
- Operates I2C slave peripherals over the single-contact, 1-wire interface
|
