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| 型号： | UPD780023AYCW(A)-XXX |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP64 |
| 封装： | 0.750 INCH, PLASTIC, SDIP-64 |
| 文件页数： | 24/92页 |
| 文件大小： | 689K |
| 代理商： | UPD780023AYCW(A)-XXX |
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PD780021A(A), 780022A(A), 780023A(A), 780024A(A), 780021AY(A), 780022AY(A), 780023AY(A), 780024AY(A)
Data Sheet U15131EJ3V0DS
5.6 Serial Interface
Three serial interface channels are incorporated.
PD780024A Subseries
Serial interface UART0:
1 channel
Serial interface SIO30, SIO31:
2 channels
PD780024AY Subseries
Serial interface UART0:
1 channel
Serial interface SIO30:
1 channel
Serial interface IIC0
1 channel
(1) Serial interface UART0
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 also be 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
Receive
buffer
register 0
RXB0
RxD0/P23
TxD0/P24
Receive
shift
register 0
PE0 FE0 OVE0
Asynchronous serial
interface status
register 0
(ASIS0)
TXS0
INTSER0
INTST0
Baud rate
generator
fX/2 to fX/27
TXE0 RXE0 PS01 PS00 CL0
SL0 ISRM0 IRDAM0
Asynchronous serial
interface mode
register 0 (ASIM0)
INTSR0
Receive
controller
(parity
check)
Transmit
shift
register 0
Transmit
controller
(parity
addition)
RX0
P25/ASCK0
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