參數(shù)資料
型號: UPD70433R-12
廠商: NEC Corp.
元件分類: 16位微控制器
英文描述: V55PITM 16-BIT MICROPROCESSOR
中文描述: V55PITM 16位微處理器
文件頁數(shù): 50/166頁
文件大?。?/td> 772K
代理商: UPD70433R-12
50
μ
PD70433
7.
SERIAL INTERFACE FUNCTIONS
The V55PI is equipped with a 2-channel serial interface unit (ch0, ch1).
The two communication protocols supported by the V55PI are as follows:
(1)
(2)
Asynchronous
Clocked
UART
CSI
SBI:
IOE:
2-wire serial bus interface
I/O expansion 3-wire serial interface
7.1
FEATURES
Two communication protocols supported
Two serial channels
Wake-up function
On-chip dedicated baud rate generator
DMA request generated by completion of transmission/reception (transmit/receive data DMA transfer is
capable)
7.2
PROTOCOLS
The UART is an asynchronous serial interface which achieves data synchronization by means of start/stop bits, and is
functionally enhanced UART functions compared with previous single-chip microcontroller.
The CSI (clocked serial interface) is a clocked serial interface which achieves synchronization by transmission/reception
of a clock. The CSI is a subset of the standard serial bus interface specification for NEC single-chip microcontrollers, and
I
2
C functions are not supported. The wake-up release function is implemented by using macro service.
Table 7-1. Supported Protocols
Supported Protocols
Serial Interface Unit
Clocked (CSI)
Asynchronous
SBI
IOE
(UART)
Channel 0
Yes
Yes
Yes
Channel 1
No
Yes
Yes
The UART function or CSI function can be programmably selected for each channel. Protocol selection is performed by
means of the protocol selection register (ASP).
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