Renesas H8SX/1668R - Manual (Page 15)

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Section 2 Connection Procedures
2.1 Connecting the User System Interface Board to the User System
WARNING
Always switch OFF the user system and the emulator
product before the USER SYSTEM INTERFACE BOARD
is connected or removed. Before connecting the two, 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 all of pins including the
port N 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 [USER-ON].
Failure to do so will damage the emulator product, user
system interface board, and user system.