Christophe DELPECH

Place MC68332 in high impedance

Discussion created by Christophe DELPECH on Apr 23, 2007
Latest reply on Apr 30, 2007 by Maclain Lobdell
I'm developping a board test in boundary scan and i need to place an MC68332 in high impedance in order to test adress and data bus of the board.
I think that i have to use the TSC pin but I don't know how to use it. The document M68331/332TUT/D says that :

Driving this pin to approximately 1.6 times causes the MCU to place all output drivers in a high-impedance state, isolating the MCU from the rest of the system.

But it doesn't work.

Can you say me how to do ?