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Serial Interface
13-11
■ Clock synchronous mode timing
<Transmission>
• One-byte transfer with 8-bit data length and parity on
Fig. 13-2-3 Timing Chart (1)
• Two-byte transfer with 8-bit data length and parity off
Fig. 13-2-4 Timing Chart (2)
When transmission is enabled, transmission starts when data is written to SC0TXB.
Continuous transmission is possible by writing data to SC0TXB again while transmission is in progress.
During a 7-bit transfer, the MSB (bit 7) is ignored.
The SC0TXF flag is set to "1" when data is written to SC0TXB, and is set to "0" at the end of transmission.
The SC0TBF flag is set to "1" when data is written to SC0TXB, and is set to "0" at the start of transmission.
bp1 bp2 bp3 bp4 bp5 bp6 bp7 PTYbp0
SBO pin
SBT pin
Data write
SC0TXF flag
SC0TBF flag
Interrupt request
(when set to “transmission buffer
empty”)
Interrupt request
(when set to “transmission end”)
bp1 bp2 bp3 bp4 bp5 bp6 bp7bp0 bp1 bp2 bp3 bp4 bp5 bp6 bp7bp0
SBO pin
SBT pin
Data write
SC0TXF flag
SC0TBF flag
Interrupt request
(when set to “transmission buffer
empty”)
Interrupt request
(when set to “transmission end”)