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13.2 General-purpose serial interface
13.2.1 Features
Serial interface 0 is a general-purpose serial interface for which clock sync mode, UART mode, or I2C mode can
be specified. The features of each mode are described below.
<Clock synchronous mode>
• Parity
• Character length 7 bits, 8 bits
• Transmission and reception bit sequence
• Clock source
• Maximum bit rate
• Error detection during reception
• Buffers
• Interrupts
None, 0 fixed, 1 fixed, even, odd
LSB or MSB selectable
1/2, 1/8, or 1/32 of IOCLK
1/8 of timer 3 or timer 9 underflow, 1/2 of timer 9 underflow
External clock
7.5 Mbit/s (when IOCLK is 15 MHz)
Parity errors, overrun errors
Independent buffers for transmission and reception:
Reception and transmission buffers are both double buffers
Transmission interrupts:
"Transmission end" or "transmission buffer empty" selectable
Reception interrupts:
"Reception end" or "reception end with error" selectable
Serial Interface
13-3
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