參數(shù)資料
型號： μPD703003
廠商： NEC Corp.
英文描述： 16/32 Bit Single Chip Microcontrollers(16/32位單片微控制器)
中文描述： 16/32位單片機(jī)微控制器（16/32位單片微控制器）
文件頁數(shù)： 24/82頁
文件大?。?/td> 592K
代理商： ΜPD703003
μ
PD703003
24
9. SERIAL INTERFACE FUNCTIONS (SIO)
Two types and six channels of serial interfaces are provided.
Up to four channels may be used at the same time.
(1) Asynchronous serial interfaces 0, 1 (UART0, UART1): 2 channels
(2) Clock-synchronized serial interfaces 0 to 3 (CSI0 to CSI3): 4 channels
Caution
UART0 and CSI0 are a shared pin, as are UART1 and CSI1. Either one can be selected via a
register (ASIM00, ASIM10).
9.1 Asynchronous Serial Interfaces 0, 1 (UART0, UART1)
The features of the asynchronous serial interfaces 0, 1 (UART0, UART1) are shown below.
Transfer rate
150 bps to 76800 bps (@
φ
= 33-MHz operation, using baud rate generator)
110 bps to 307200 bps (@
φ
= 20-MHz operation, using baud rate generator)
Maximum 1031 Kbytes (@
φ
= 33-MHz operation, using
φ
/2)
Full duplex communications: Receive buffer (RXBn) included
Two-pin configuration
TXDn: output pin for transmit data
RXDn: input pin for receive data
Reception error detection function
Parity error
Framing error
Overrun error
Three types of interrupt sources
Reception error interrupt (INTSERn)
Reception completion interrupt (INTSRn)
Transmission completion interrupt (INTSTn)
The character length of transmit and receive data is specified via the ASIMn0, ASIMn1 register
Character lengths: 7 or 8 bits, or 9 bits (if using expansion bit)
Parity function: even, odd, zero, or no parity
Transmission stop bits: 1 or 2 bits
On-chip baud rate generator
Remark
n = 0, 1
φ
: internal system clock
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