HD6412350 Hitachi, HD6412350 Datasheet - Page 894

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

SSR0—Serial Status Register 0
874
Bit
Initial value
Read/Write
Note: * Can only be written with 0 for flag clearing.
Transmit Data Register Empty
0
1
[Clearing condition]
• When 0 is written to TDRE after reading TDRE = 1
• When the DMAC or DTC is activated by a TXI interrupt and write data to TDR
[Setting condition]
• When the TE bit in SCR is 0
• When data is transferred from TDR to TSR and data can be written to TDR
:
:
:
R/(W)*
TDRE
7
1
Receive Data Register Full
0
1
R/(W)*
RDRF
[Clearing condition]
• When 0 is written to RDRF after reading RDRF = 1
• When the DMAC or DTC is activated by an RXI interrupt and read data from RDR
[Setting condition]
When serial reception ends normally and receive data is transferred
from RSR to RDR
6
0
Overrun Error
0
1
R/(W)*
ORER
[Clearing condition]
When 0 is written to ORER after reading ORER = 1
[Setting condition]
When the next serial reception is completed while
RDRF = 1
5
0
Framing Error
0
1
R/(W)*
[Clearing condition]
When 0 is written to FER after reading FER = 1
[Setting condition]
When the SCI checks whether the stop bit at the end of the receive
data when reception ends, and the stop bit is 0
FER
4
0
Parity Error
0
1
R/(W)*
[Clearing condition]
When 0 is written to PER after reading PER = 1
[Setting condition]
When, in reception, the number of 1 bits in the receive data plus the parity bit
does not match the parity setting (even or odd) specified by the O/E bit in SMR
PER
3
0
Transmit End
0
1
TEND
[Clearing condition]
• When 0 is written to TDRE after reading TDRE = 1
• When the DMAC or DTC is activated by a TXI interrupt
[Setting conditions]
• When the TE bit in SCR is 0
• When TDRE = 1 at transmission of the last bit of a 1-byte
R
2
1
and write data to TDR
serial transmit character
Multiprocessor Bit
0
1
H'FF7C
MPB
[Clearing condition]
When data with a 0 multiprocessor bit is received
[Setting condition]
When data with a 1 multiprocessor bit is received
R
1
0
Multiprocessor Bit Transfer
0
1
MPBT
R/W
Data with a 0 multiprocessor bit is transmitted
Data with a 1 multiprocessor bit is transmitted
0
0
SCI0