DS3900 Datasheet, PDF (1/15 Pages) Dallas Semiconductor – Serial Communications Module For Evaluation Kits

Rev 1; 7/04
Serial Communications Module
For Evaluation Kits
General Description
The DS3900 provides bidirectional communication with
2-wire and 3-wire devices using a PC’s serial
port. In addition, it can also be used as a general-pur-
pose digital I/O interface with 11 I/O signals that can
evaluate a wide variety of ICs.
The DS3900 is intended for evaluation purposes only.
Applications
Prototyping 2-Wire and 3-Wire Device Designs
Evaluating 2-Wire and 3-Wire Devices
Building Test Software for Systems Containing
2-Wire or 3-Wire Devices
Communicating With ICs that Require up to 11 I/O
Signals
Features
♦ Communicates from PCs to ICs Through a
Serial Port
♦ Fast Communication to 2-Wire Devices
♦ Eleven General-Purpose Digital I/O Pins,
Including SDA and SCL
♦ Built-in Pullup Resistors for SDA and SCL
Minimize Required External Hardware
♦ Connection to Standard Prototyping Boards
Possible Using Header Connectors
♦ Operates from 3.0V to 5.5V
PART
DS3900EVKIT
Ordering Information
DESCRIPTION
DS3900 Module
DS3900 Photo
Pin Configuration
P1
P2
P3
(N.C.) RESET
GND
P4
P5
GND
JP1
DS3900 R1.0
U1
X1
C1
SCL
SDA
C4
C6
C5
R2
R3 ^JP2
P11 / SDA
P10 / SCL
GND
V_CC
P9
P8
P7
P6
Typical Operating Circuit appears at end of data sheet.
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.