HD643303x Hitachi, HD643303x Datasheet - Page 343
HD643303x
Manufacturer Part Number
HD643303x
Description
Hitachi Microcomputer
Manufacturer
Hitachi
Datasheet
1.HD643303X.pdf
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Bit 3—Parity Error (PER): Indicates that data reception ended abnormally due to a parity error
in asynchronous mode.
Bit 3
PER
0
1
Notes: 1. Clearing the RE bit to 0 in SCR does not affect the PER flag, which retains its previous
Bit 2—Transmit End (TEND): Indicates that when the last bit of a serial character was
transmitted TDR did not contain new transmit data, so transmission has ended. The TEND flag is
a read-only bit and cannot be written.
Bit 2
TEND
0
1
2. When a parity error occurs the SCI transfers the receive data into RDR but does not set
Description
Receiving is in progress or has ended normally
[Clearing conditions]
The chip is reset or enters standby mode.
Software reads PER while it is set to 1, then writes 0.
A receive parity error occurred
[Setting condition]
The number of 1s in receive data, including the parity bit, does not match the even or
odd parity setting of O/E in SMR.
Description
Transmission is in progress
[Clearing conditions]
Software reads TDRE while it is set to 1, then writes 0 in the TDRE flag.
End of transmission
[Setting conditions]
The chip is reset or enters standby mode.
The TE bit is cleared to 0 in SCR.
TDRE is 1 when the last bit of a serial character is transmitted.
value.
the RDRF flag. Serial receiving cannot continue while the PER flag is set to 1. In
synchronous mode, serial transmitting is also disabled.
*2
328
*1
(Initial value)
(Initial value)
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