UPD70433GD-16-5BB NEC [NEC], UPD70433GD-16-5BB Datasheet - Page 50

• Manufacturer Part Number: UPD70433GD-16-5BB
• Description: V55PITM 16-BIT MICROPROCESSOR
• Manufacturer: NEC [NEC]

50
7. SERIAL INTERFACE FUNCTIONS
7.1
7.2
functionally enhanced UART functions compared with previous single-chip microcontroller.
of a clock. The CSI is a subset of the standard serial bus interface specification for NEC single-chip microcontrollers, and
I
means of the protocol selection register (ASP).
2
C functions are not supported. The wake-up release function is implemented by using macro service.
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)
The UART is an asynchronous serial interface which achieves data synchronization by means of start/stop bits, and is
The CSI (clocked serial interface) is a clocked serial interface which achieves synchronization by transmission/reception
The UART function or CSI function can be programmably selected for each channel. Protocol selection is performed by
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)
FEATURES
PROTOCOLS
Asynchronous
Clocked
UART
CSI
Serial Interface Unit
Channel 0
Channel 1
SBI:
IOE:
Table 7-1. Supported Protocols
2-wire serial bus interface
I/O expansion 3-wire serial interface
Yes
SBI
No
Clocked (CSI)
Supported Protocols
IOE
Yes
Yes
Asynchronous
(UART)
Yes
Yes
PD70433