Rev. 1.40
194
De�e��e� 1�� �01�
Rev. 1.40
19�
De�e��e� 1�� �01�
BS67F340/BS67F350/BS67F360/BS67F370
Enhanced Touch A/D Flash MCU with LCD Driver
BS67F340/BS67F350/BS67F360/BS67F370
Enhanced Touch A/D Flash MCU with LCD Driver
UART Interface
These devices contain an integrated full-duplex asynchronous serial communications UART
interface that enables communication with external devices that contain a serial interface. The
UART function has many features and can transmit and receive data serially by transferring a frame
of data with eight or nine data bits per transmission as well as being able to detect errors when the
data is overwritten or incorrectly framed. The UART function possesses its own internal interrupt
which can be used to indicate when a reception occurs or when a transmission terminates.
The integrated UART function contains the following features:
• Full-duplex, asynchronous communication
• 8 or 9 bits character length
• Even, odd or no parity options
• One or two stop bits
• Baud rate generator with 8-bit prescaler
• Parity, framing, noise and overrun error detection
• Support for interrupt on address detect (last character bit=1)
• Separately enabled transmitter and receiver
• 2-byte Deep FIFO Receive Data Buffer
• RX pin wake-up function
• Transmit and receive interrupts
• Interrupts can be initialized by the following conditions:
♦
Transmitter Empty
♦
Transmitter Idle
♦
Receiver Full
♦
Receiver Overrun
♦
Address Mode Detect
MSB
LSB
…………………………
T�ans�itte� Shift Registe� (TSR)
MSB
LSB
…………………………
Re�eive� Shift Registe� (RSR)
TX Pin
RX Pin
Baud Rate
Gene�ato�
TX Register (TXR)
RX Register (RXR)
Data to �e t�ans�itted
Data �e�eived
Buffe�
f
SYS
MCU Data Bus
UART Data Transfer Block Diagram