Sam4s ER-5200M - Page 52

7 Special Circuit Descriptions
7-8 SAM4S ER-5200 Series
7-5 RS-232C & IRC Communication Block Diagram
Figure 7-12 IRC Waveform
TRANSMIT ACTION
(
ECR
)
RECEIVE
A
CTION
(
ECR
)
“H”
Transmission a data (1 Byte)
DATA
TX/RX_A
TX/RX_B
“L”
(+)Level
Gnd
(+)Level
Gnd
(+)Level (5V)
(+)Level (5V)
Received data (1 Byte)
TX/RX_A
TX/RX_B
Gnd
Gnd
A-B =
(-)Level
A-B =
(+)Level
A-B =
(-)Level
A-B =
(+)Level
A-B =
(-)Level