Panasonic MN103001G/F01K - Manual (Page 351)

Serial Interface
13-49
■ UART Serial Interface timing
<Transmission>
• Transfer with 7-bit data length, parity off, and 2 stop bit
Fig. 13-4-3 Timing Chart (18)
• Two-byte transfer with 8-bit data length, parity off, and 1 stop bit
Fig. 13-4-4 Timing Chart (19)
When transmission is enabled, transmission starts when data is written to SC3TXB.
Continuous transmission is possible by writing data to SC3TXB again while transmission is in progress.
During a 7-bit transfer, the MSB (bit 7) is ignored.
The SC3TXF flag is set to "1" when data is written to SC3TXB, and is set to "0" at the end of transmission.
The SC3TBF flag is set to "1" when data is written to SC3TXB, and is set to "0" at the start of transmission.
SBO pin
Data write
SC3TXF flag
SC3TBF flag
Interrupt request
(when set to “transmission buffer
empty”)
Interrupt request
(when set to “transmission end”)
bp1 bp2 bp3 bp4 bp5 bp6 bp0 ST SP SP
bp1 bp2 bp3 bp4 bp5 bp6 bp0 ST SP bp1 bp2 bp3 bp4 bp5 bp6 bp0 ST SP bp7 bp7 SBO pin
Data write
SC3TXF flag
SC3TBF flag
Interrupt request
(when set to “transmission
buffer empty”)
Interrupt request
(when set to “transmission
end”)