Preset states at power-on

The handler I/O port is set at power-on as follows (not affected at reset)

Description

Status

Port A

High (All Bits)

Port B

High (All Bits)

Port C

Input

Port D

Input

Port C STATUS

Low

Port D STATUS

Low

/OUTPUT1

High

/OUTPUT2

High

/SWEEP END

High

/PASS FAIL

High

Other topics about Communication with External Devices