參數(shù)資料
型號: UPD784031YGK-BE9
廠商: NEC Corp.
英文描述: 16-/8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 16-/8-bit的單晶片微控制器
文件頁數(shù): 35/88頁
文件大小: 464K
代理商: UPD784031YGK-BE9
35
μ
PD784031Y
7.8 Serial Interface
Three independent serial interface channels are provided.
Asynchronous serial interface (UART)/3-wire serial I/O (IOE) x 2
Clocked serial interface (CSI) x 1
3-wire serial I/O (IOE)
2-wire serial I/O (IOE)
I
2
C bus interface (I
2
C)
Therefore, communication with an external system and local communication within the system can be simultaneously
executed (refer to
Figure 7-9
).
Figure 7-9. Example of Serial Interface
(a) UART + I
2
C
(b) UART + 3-wire serial I/O + 2-wire serial I/O
Note
Handshake line
RS-232-C
driver/receiver
[UART]
Port
RxD
TxD
SI
SO
SCK
Port
INT
[3-wire serial I/O]
SO1
SI1
SCK1
INTPm
Port
SB0
SCK0
Port
INT
Note
SDA
SCL
INTPn
Port
V
DD
V
DD
[2-wire serial I/O]
PD784031Y (master)
μ
PD4711A
μ
PD75108 (slave)
μ
PD78014 (slave)
μ
Note
PD784031Y (master)
μ
PD4711A
μ
RS-232-C
driver/receiver
RS-232-C
driver/receiver
[UART]
[UART]
RxD
TxD
RxD2
TxD2
SDA
SCL
[I
2
C]
LCD
PD6272 (EEPROM
TM
)
μ
V
DD
SDA
SCL
SDA
SCL
V
DD
PD4711A
μ
Port
Port
PD78062Y (slave)
μ
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