ST7263-EMU2 STMicroelectronics, ST7263-EMU2 Datasheet - Page 54

• Manufacturer Part Number: ST7263-EMU2
• Description: MCU, MPU & DSP Development Tools ST7 Emulator Board
• Manufacturer: STMicroelectronics

Specifications of ST7263-EMU2

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ST7263
5.5 SERIAL COMMUNICATIONS INTERFACE (SCI)
5.5.1 Introduction
The Serial Communications Interface (SCI) offers
a flexible means of full-duplex data exchange with
external equipment requiring an industry standard
NRZ asynchronous serial data format.
5.5.2 Main Features
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– Address bit (MSB)
– Idle line
– Overrun error
– Noise error
– Frame error
– Transmit data register empty
– Transmission complete
– Receive data register full
– Idle line received
– Overrun error detected
Full duplex, asynchronous communications
NRZ standard format (Mark/Space)
Independently programmable transmit and
receive baud rates up to 250K baud.
Programmable data word length (8 or 9 bits)
Receive buffer full, Transmit buffer empty and
End of Transmission flags
Two receiver wake-up modes:
Muting function for multiprocessor configurations
Separate enable bits for Transmitter and
Receiver
Three error detection flags:
Five interrupt sources with flags:
5.5.3 General Description
The interface is externally connected to another
device by two pins (see Figure 1):
– TDO: Transmit Data Output. When the transmit-
– RDI: Receive Data Input is the serial data input.
Through this pins, serial data is transmitted and re-
ceived as frames comprising:
– An Idle Line prior to transmission or reception
– A start bit
– A data word (8 or 9 bits) least significant bit first
– A Stop bit indicating that the frame is complete.
ter is disabled, the output pin returns to its I/O
port configuration. When the transmitter is ena-
bled and nothing is to be transmitted, the TDO
pin is at high level.
Oversampling techniques are used for data re-
covery by discriminating between valid incoming
data and noise.