
UIC680 Programmer’s Manual
UDN PM063-U Rev. 4
5-3
B. Operation Example
In this example, it assumes UIC680 is in protocol USI2 and Self-ARM disable.
After host issues the Arm-to-Read command, UIC680 will check if any payment card in the
reading read zone or any magnetic stripe card swiped (the magnetic stripe reader is
optional device). No matter the card is decoded succeed or failed, it will return ‘^’ to indicate
the card has been read. The host can issue Q, R, S command to retrieve the card data.
Read Card Start
Send “Arm-to-Read”
command to UIC680
Any card
read?
Send Transmit track 1, 2,
or 3 command to retrieve
track data
Card data processing
Yes
No
For next transaction