DS1413 MAXIM | Alldatasheet
Document overview
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Technical content
19-4863; 8/09
FEATURES
Small size, low-cost in terface to an RS232C COM Port for reading and writing iButton® devices Supports reading all and writing non- EPROM iButton devices at regular speed Powered entirely from an RS232 interface Standard DB female connector for mating to the COM Port of a computer with a DS9098 i Button Retainer for a single iButton or MicroLAN Cable (DS1402x)
ORDERING INFORMATION
DS1413# DB–9 Connector # Denotes an RoHS-compliant device that may include lead(Pb) that is exempt under the RoHS requirements.
DESCRIPTION
The DS1413 Passive Serial Port i Button Holder is a simple, low-co st adapter which performs RS232C (±12 volt) level conversion, allowing a non-EPROM i Button to be read and writt en directly. It can also read all EPROM based i Buttons. The serial port must support a data transmission rate of 115.2 kbits/s in order to create the 1-Wire ® time slots correctly. Nearly all PCs and several other hardware platforms support the required bit rate and are fully compatib le with the DS1413. Since an eight bit character (6-data bits plus start-and stop bit) on the RS232C port operating at 115.2 kbits/s is used to form a single 1-Wire time slot, the maximum effective 1-Wire tran sfer rate is 14.4 kbits/s (regular speed). The DS1413 has a DS9098 retainer for a single F5 Micro-Ca n and can replace the DS9097 COM Port Adapter in applications that use only a single i Button. Multiple i Buttons can be connected to the DS1413 using standard MicroLAN Cables and button holders (see DS1401 and DS1402x data sheets). The DS1413 does not support the str ong pullup. For applications requ iring a strong 5-volt pullup see DS1411. Details on the operation of the DS1413 are found in Application Note 214: Using a UART to Implement a 1-Wire Bus Master. DS1413 Passive Serial Port iButton® Holder www.maxim-ic.com
REVISION HISTORY
7/99 Initial release. — Added # to the Ordering Information to reflect the conversion to a RoHS-compliant product. Changed the reference in the Description section from Application Note 74 to Application Note 214. 2 of 2