Disconnecting Qb-78K0Mini From Related Devices; Pin Statuses At Power-On - Renesas QB-78K0MINI User Manual

3.6.3 Disconnecting QB-78K0MINI from related devices

Follow the steps described below when disconnecting the QB-78K0MINI from other related devices.
(1) Close the ID78K0-QB.
(2) Turn off the power to the target system (if using a target system).
(3) Remove the USB interface cable from the QB-78K0MINI and the host machine.
(4) Remove the QB-78K0MINI connection cable from the QB-78K0MINI and from either the target system or the
self-check board.

3.7 Pin Statuses at Power-on

Table 3-1 lists the statuses of pins at power-on.
However, when the USB interface cable is not connected, if the target voltage does not start up right away (V
less than 2 V), the device may be degraded, so do not turn on the target's power until after the USB interface cable
has been connected.
Power-on Mode
USB Cable
Not connected
Not connected
Connected
Connected
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CHAPTER 3 HARDWARE SETTINGS AND FUNCTIONS
Table 3-1. Pin Statuses
Target Power Supply
ON All pins at low level
OFF All pins at high impedance
ON Normal operation
OFF All pins at high impedance
User's Manual U17029EJ3V0UM
Status of Target Interface Pin
Output Pin
All pins at high impedance
All pins at high impedance
Normal operation
All pins at high impedance
DD
Input Pin
=