RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 832
Dec 10, 2015
15.5 Operation of 3-Wire Serial I/O (CSI00, CSI01, CSI10, CSI11) Communication
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 to 16 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
• Maximum transfer rate
During master communication: Max. f
MCK/4
Note
During slave communication: Max. f
MCK/6
Note
[Interrupt function]
• Transfer end interrupt/buffer empty interrupt
[Error detection flag]
• Overrun error
In addition, CSI00m, CSI01, CSI10, and CSI11 support the slave select input function. For details, refer to 15.6 Clock
Synchronous Serial Communication with SPI Function.
Note Use the clocks within a range satisfying the SCK cycle time (tKCY) characteristics (see CHAPTER 34 to
CHAPTER 36 ELECTRICAL SPECIFICATIONS).
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