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CHAPTER 15 SERIAL INTERFACE OVERVIEW
User’s Manual U12697EJ3V0UM
Figure 15-1. Serial Interface Example
(a) UART + I
2
C
PD784225Y (master)
PD4711A
µ
µ
µ
µ
µ
RS-232C
driver/receiver
PD4711A
[UART]
[UART]
Port
Port
RxD1
TxD1
RxD2
TxD2
SDA0
SCL0
[I
2
C]
LCD
PD78054Y (slave)
PD78062Y (slave)
V
DD0
SDA
SCL
SDA
SCL
V
DD0
RS-232C
driver/receiver
(b) UART + 3-wired serial I/O
PD784225Y (master)
PD4711A
µ
µ
µ
[UART]
Port
RxD2
TxD2
PD75108 (slave)
SI
SO
SCK
[3-wire serial I/O]
Note
SO1
SI1
SCK1
INTPm
Port
RS-232C
driver/receiver
Port
INT
Note
Handshake lines