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參數(shù)資料
| 型號(hào)： | UPD780032AYCW |
| 廠商： | NEC Corp. |
| 元件分類(lèi)： | 8位微控制器 |
| 英文描述： | 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 8位單晶片微控制器 |
| 文件頁(yè)數(shù)： | 25/70頁(yè) |
| 文件大?。?/td> | 527K |
| 代理商： | UPD780032AYCW |
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25
μ
PD780031AY, 780032AY, 780033AY, 780034AY
Data Sheet U14045EJ1V0DS00
5.6 Serial Interface
Three serial interface channels are incorporated.
Serial interface UART0:
Serial interface SIO30:
Serial interface IIC0:
1 channel
1 channel
1 channel
(1) Serial interface UART0
The serial interface UART0 has two modes: asynchronous serial interface (UART) mode and infrared data
transfer mode.
Asynchronous serial interface (UART) mode
This mode enables full-duplex operation wherein one byte of data starting from the start bit is transmitted
and received.
The on-chip UART-dedicated baud-rate generator enables communication using a wide range of selectable
baud rates. In addition, a baud rate can be also defined by dividing the clock input to the ASCK0 pin.
The UART-dedicated baud-rate generator can also be used to generate a MIDI-standard baud rate (31.25
kbps).
Infrared data transfer mode
This mode enables pulse output and pulse reception in data format.
This mode can be used for office equipment applications such as personal computers.
Figure 5-9. Block Diagram of Serial Interface UART0
Internal bus
Asynchronous serial
interface mode register 0
(ASIM0)
Asynchronous serial
interface status
register 0 (ASIS0)
Receive
buffer
register 0
RXB0
RxD0/P23
TxD0/P24
Receive
shift
register 0
PE0 FE0
OVE0
TXS0
INTSER0
INTST0
Baud rate
generator
f
X
/2 to f
X
/2
7
TXE0 RXE0
PS01 PS00
CL0
SL0
ISRM0
IRDAM0
INTSR0
Receive
control
circuit
(parity
check)
Transmit
shift
register 0
Transmit
control
circuit
(parity
addition)
RX0
ASCK0/P25
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