©2012 by e-Gizmo Mechatronix Central
N=L+"B"18"QR"7=L+0
EZ HMI Display Terminal
7.5-9.0V DC
DC INPUT
HOST CONTROLLER (MICROCONTROLLER)
with 3.0-3.3V Supply Voltage
TXD
VCC
RXD
GND
GND
NO JUMPER!
+3.0-3.3V
SOURCE
VCC
HOST CONTROLLER (MICROCONTROLLER)
with 5V Supply Voltage
TXD
VCC
RXD
GND
GND
+5V
SOURCE
VCC
JUMPER INSTALLED
ON JP1 5V POSITION
Figure 8. The EZ HMI, conversely, can be powered
from a +5V sourced by the host controller circuit.
Figure 9. UART wiring interface to host controllers
with 3.0-3.3V working logic levels. Make sure the
jumper in JP1 is removed.
