DS9097

DS9097/DS9097E COM Port Adapter www.dalsemi.com FEATURES § Provides a simple, low-cost interface to an RS232C COM Port for reading and writing iButtonTM devices (DS9097E required for programming DS198x Add-Only iButtons) § Adapter is powered entirely from an RS232 interface (DS9097E may require optional auxiliary 12V supply) § Standard DB-9 (DSD9097) or DB-25 (DS9097E) female connector for mating the adapter to the COM Port of a computer and RJ-11 connector for easy attachment of a probe such as the DS9092GT § DS9097E has an additional 2.1 mm male power jack to allow for an auxiliary 12V DC supply for programming Add-Only iButtons Pin assignment DS9097, DB-9 TXD (3), RXD (2), DTR (4), PC-Ground (5); all other pins not connected Pin assignment DS9097E, DB-25 TXD (2), RXD (3), DTR (20), RTS (4), PCGround (7); all other pins not connected www.DataSheet4U.com Auxiliary supply should be a regulated 12V @ 10 mA minimum, center=GND, outer ring=V+ (Newark Electronics Stock No. 84F2081, Allied Electronics Stock No. 9289895, Stancor Model STA-300R, or equivalent) DESCRIPTION The DS9097 COM Port Adapter is a simple, low-cost passive adapter which performs RS232C (±12V) level conversion, allowing an iButton probe to be connected to the serial port of a computer so that a nonEPROM iButton can be read and written directly. It can also read all EPROM-based iButtons. The serial port must support a data transmission rate of 115.2 kbits/s in order to create the 1-WireTM time slots correctly...