SR3 Type 1 Technical Manual
TSP005.doc Issue 5.0 – Jan 2005
Money Controls 2005. All rights reserved.
Page 44 of 50
25.3 Circuit 3 – ccTalk Direct Interface
A very low cost solution is to interface a single pin on a microcontroller directly onto the
ccTalk
data line. The pin can be switched between active-low for transmitting and high-
impedance tri-state for receiving.
Figure 21: Circuit 3,
ccTalk
Direct Interface