參數(shù)資料
型號: UPD784225Y
廠商: NEC Corp.
英文描述: 16/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16/8-BIT單晶片微控制器
文件頁數(shù): 39/92頁
文件大?。?/td> 687K
代理商: UPD784225Y
39
μ
PD784224, 784225, 784224Y, 784225Y
Data Sheet U12376EJ1V0DS00
7.7 Serial Interface
Three independent serial interface channels are provided.
Asynchronous serial interface (UART)/3-wire serial I/O (IOE)
×
2
Clocked serial interface (CSI)
×
1
3-wire serial I/O (IOE)
I
2
C bus interface (I
2
C) (
μ
PD784225Y Subseries only)
Therefore, communication with an external system and local communication within the system can be simultaneously
executed (see
Figure 7-9
).
Figure 7-9. Example of Serial Interface
(a) UART + I
2
C
PD784225Y (master)
μ
μ
PD4711A
μ
PD4711A
RS-232C
driver/receiver
RS-232C
driver/receiver
[UART]
[UART]
Port
Port
RxD1
TxD1
RxD2
TxD2
SDA0
SCL0
[I
2
C]
LCD
PD780078Y (slave)
μ
PD780308Y (slave)
μ
V
DD0
SDA
SCL
SDA
SCL
V
DD0
(b) UART + 3-wire serial I/O
PD784225Y (master)
μ
PD4711A
μ
RS-232C
driver/receiver
[UART]
Port
RxD2
TxD2
PD753106 (slave)
μ
SI
SO
SCK
Port
INT
[3-wise serial I/O]
Note
SO1
SI1
SCK1
INTPm
Port
Note
Handshake line
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