E1/E20/E2/E2 Lite Additional Document 2. Designing the User System
R20UT1994EJ0910 Rev.9.10 Page 28 of 59
Oct.06.23
2.5.2 TOOL0 Pin
The E1/E20/E2/E2 Lite uses the TOOL0 pin. Any functions that are multiplexed on this pin are not available.
Pull up the signals of the TOOL0 pin at 1 kΩ and do not arrange these signal lines in parallel with or across
other high-speed signal lines.
TOOL0
14-pin
2.54-mm pitch
connector
MCU
TOOL0
1 kΩ
Driving power supply
for TOOL0
Figure 2-15 Connection Example of the TOOL0 Pin
Do not use adjacent resistors for pull-up of the TOOL0 pin because they may affect or may be affected from other pins.
Do not install capacitors, series resistors, or filters on signal lines; if attempted, correct communication may not be
established.
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