Renesas H8SX/1653 - Manual (Page 14)

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Section 2 Connection Procedures
2.1 Connecting User System Interface Board to User System
WARNING
Always switch OFF the user system and the emulator
product before the USER SYSTEM INTERFACE BOARD
is connected to or removed from any part. Before
connecting, make sure that pin 1 on both sides are correctly
aligned. Failure to do so will result in a FIRE HAZARD and
will damage the user system and the emulator product or
will result in PERSONAL INJURY. The USER PROGRAM will
be LOST.
CAUTION
1. Do not connect a 5-V signal to any pin, including the
USB pins. Incorrect usage will cause damage to the
emulator product, user system interface board, and
user system.
2. To connect the emulator to the user system, ensure that
the SW1 jumper pin is inserted to [ON].
Failure to do so will damage the emulator product, user
system interface board, and user system.