Datasheet

Installation and Operation

16 Now write values to the TCON register (bit 7 to

bit 4) and monitor the effects on the VW1 pin.

The different Potentiometer termi-

nals (A1, W1, and B1), will be either

connected or disconnected depend-

ing on the value.

17 Write assorted values to the devices memory

locations and then read the values to see what

is present. If the write is to Non-Volatile mem-

ory, power down (unplug) the MCP42XX PICtail

Plus Daughter Board and then power up to

evaluate if the non-volatile memory value is

retained.

TABLE 2-4: DEMO STEPS USING THE PICDEM HPC EXPLORER DEMO

BOARD (CONTINUED)

Step Action Result

Note 1: A Digital Multi-Meter (DMM) configured to measure voltage may be used instead of

an oscill0scope.

TCON = Result

‘x 1110 xxxx’b B1 open,

W1 pulled high

‘x 1011 xxxx’b A1 open,

W1 pulled low

‘x 1101 xxxx’b W1 floating

‘x 0111 xxxx’b A1 open,

W1 connected to

B1 (Zero-Scale)

‘x 1111 xxxx’b All terminals con-

nected to their

respective pin