UPD78F1502AGK-GAK-AX Datasheet, PDF (455/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
14.1 Functions of Serial Array Unit
Each serial interface supported by the 78K0R/Lx3 microcontrollers has the following features.
14.1.1 3-wire serial I/O (CSI00, CSI01, CSI10, CSI20)
This is a clocked communication function that uses three lines: serial clock (SCK) and serial data (SI and SO) lines.
[Data transmission/reception]
• Data length of 7 or 8 bits
• Phase control of transmit/receive data
• MSB/LSB first selectable
• Level setting of transmit/receive data
[Clock control]
• Master/slave selection
• Phase control of I/O clock
• Setting of transfer period by prescaler and internal counter of each channel
[Interrupt function]
• Transfer end interrupt/buffer empty interrupt
[Error detection flag]
• Overrun error
14.1.2 UART (UART0, UART1, UART2, UART3)
This is a start-stop synchronization function using two lines: serial data transmission (TXD) and serial data reception
(RXD) lines. It transmits or receives data in asynchronization with the party of communication (by using an internal baud
rate). Full-duplex UART communication can be realized by using two channels, one dedicated to transmission (even
channel) and the other to reception (odd channel).
[Data transmission/reception]
• Data length of 5, 7, or 8 bits
• Select the MSB/LSB first
• Level setting of transmit/receive data and select of reverse
• Parity bit appending and parity check functions
• Stop bit appending
[Interrupt function]
• Transfer end interrupt/buffer empty interrupt
• Error interrupt in case of framing error, parity error, or overrun error
[Error detection flag]
• Framing error, parity error, or overrun error
The LIN-bus is accepted in UART3 (2 and 3 channels of unit 1)
[LIN-bus functions]
• Wakeup signal detection
• Sync break field (SBF) detection
• Sync field measurement, baud rate calculation
External interrupt (INTP0) or timer array unit (TAU) is
used.
R01UH0004EJ0501 Rev.5.01
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Jun 20, 2011