2 DS28E17 1-Wire-to-I C Master Bridge General Description Benefits and Features 2 2 The DS28E17 is a 1-Wire slave to I C master bridge Converts 1-Wire Communication Protocol to I C 2 device that interfaces directly to I C slaves at standard Master I/O 2 (100kHz max) or fast (400kHz max). Data transfers seri- Operates I C Slave Peripherals over the Single- ally by means of the 1-Wire protocol, which requires only Contact, 1-Wire Interface a single data lead and a ground return. Every DS28E17 2 Extend I C Communication Distance with 1-Wire Protocol is guaranteed to have a unique 64-bit ROM registration 100 Meters (typ) in Standard Speed for a number that serves as a node address in the 1-Wire net- Properly Configured Network work. Multiple DS28E17 devices can coexist with other 2 Flexible 1-Wire Slave and I C Master Operational Modes devices in the 1-Wire network and be accessed individu- Supports 15kbps and 77kbps 1-Wire Protocol with ally without affecting other devices. The DS28E17 allows 2 Packetized I C Data Payloads 2 using complex I C devices such as display controllers, Factory-Programmed, Unique 64-Bit 1-Wire ROM 2 ADCs, DACs, I C sensors, etc. in a 1-Wire environment. ID Provides Unalterable Serial Number to End Each self-timed DS28E17 provides 1-Wire access for a Equipment 2 single I C interface. Standard 100kHz and 400kHz Communication 2 Rates for I C Applications 2 I C Clock Stretching Automatically Supported Accessory Identification and Control 2 Low Power Consumption I C Sensors 0.3A (typ) in Sleep Mode Display Controllers 2.6mA (typ) when Operational ADCs/DACs Separate Pins for Sleep and Wakeup Flexibility Remote Power Controlled by an Awake Pin Sleep Mode Enabled by Sleep Pin or a 1-Wire Ordering Information appears at end of data sheet. Device Command Easy to Integrate 3.3V(nom) Supply, Small 4mm x 4mm x 0.75mm TQFN Package, -40C to +85C Operation Evaluation HW and SW Available Typical Operating Circuit V V DD DD VDD V V DD DD RESET SCL SCL RPUP SDA SDA GPIO IO AWAKE SLP N C 2 DS28E17 I C SLAVE WAKEUP BUSY SLEEP XD ED REG18 GND GND 1-Wire is a registered trademark of Maxim Integrated Products, Inc. 19-7681 Rev 1 12/152 DS28E17 1-Wire-to-I C Master Bridge Absolute Maximum Ratings Voltage Range on V with Respect to GND ......-0.3V to +3.6V Operating Temperature Range .......................... -40C to +85C DD Voltage Range on Any Lead with Storage Temperature Range ............................ -65C to +150C Respect to GND .....................................-0.3V to V + 0.5V Lead Temperature (soldering, 10s) .................................+300C DD Continuous Output Current for Any Single I/O Pin ........... 32mA Lead Temperature (reflow) ..............................................+260C Continuous Output Current for All I/O Pins Combined ......32mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Thermal Characteristics (Note 1) TQFN Junction-to-Ambient Thermal Resistance ( ) ..........40C/W JA Junction-to-Case Thermal Resistance ( ) .................6C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (T = -40C to +85C, V = V , unless otherwise noted.) (Note 2) A DD PUP PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V (Note 3) 2.45 3.6 V DD 1.8V Internal Regulator V 1.62 1.72 1.98 V REG18 Supply Current I 2.6 4.5 mA DD T = 25C 0.3 3 A Sleep Mode Current I T = 0 to +75C 1 12 A SLP A T = -40 to +85C 2 16 A Sleep Mode Resume t 2 s SLPON IO PIN: GENERAL 1-Wire Pullup Resistance R (Note 3, 4) 300 2200 W PUP Input Capacitance C (Notes 4) 15 pF IO Input Hysteresis V (Notes 5) 300 mV IHYS Input Leakage Current I -100 +100 nA L 0.3 x Input Low Voltage V (Notes 3, 6, 7) V IL V DD 0.7 x Input Low Voltage V (Notes 3, 8) V IH V DD V = 3.6V, I = 11mA 0.4 0.5 V DD OL Output Low Voltage V OL V = 2.45V, I = 8mA 0.4 0.5 V DD OL Standard speed, R = 2200 5 Recovery Time PUP t s REC (Notes 3, 9) Overdrive speed, R = 2200 8 PUP Standard speed 65 Time Slot Duration t s SLOT (Notes 3, 10) Overdrive speed 13 Maxim Integrated 2 www.maximintegrated.com