59
edits
Changes
Jump to navigation
Jump to search
m
→Notes: Changed formatting of notes
===Notes===
<references group="IC Footnotes" responsive="0" />
== Test Points ==
TP58 - MUX in/out (U14 Pin 3)
<br />
=== Analog Multiplexer ===
U14 is an 8-channel mux/demux. Four of the channels (A0-A3) go to SP1. (A4-A7 appear to go to SENS2-4, need to be traced) Pin 3 is the common in/out, and goes to R13 (560k) and R15 (47k). R15 goes to U15 Pin 7 (555 Reset), and R13 goes to U15 Pin 8 (555 Control.) <br />
