tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 261

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

16.12
Status Flag
RA001
RXD0 pin input
UART0SR<FERR>
UART0SR<PERR>
UART0SR<RBFL>
UART0SR<OERR>
INTRXD0 interrupt request
RD0BUF
RXD0 pin input
UART0SR<PERR>
UART0SR<RBFL>
UART0SR<OERR>
INTRXD0 interrupt request
RD0BUF
Figure 16-13 Framing/Parity Error Flags When an Overrun Error Occurs
When a parity error occurs in the first received data and a framing error occurs in the second data
Start Bit0
Start Bit0
A parity error occurs.
The parity is OK.
Data A
Data A
Parity Stop Start Bit0
Parity Stop Start Bit0
When a parity error occurs in the second received data
The contents of data B are discarded
The contents of data B are discarded
and those of data A are maintained.
and those of data A are maintained.
The flag is set.
An interrupt request
is generated.
An interrupt request
is generated.
Data A
Data A
A parity error occurs.
Data B
Data B
The parity is OK.
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Parity Stop
Parity Stop
The contents of data C are discarded
and those of data A are maintained.
The flag is not set even if
a framing error occurs.
An interrupt request
is generated.
The error flag is not set
together with an overrun error.
An interrupt request
is generated.
Start Bit0
The contents of data C are
discarded and those of
data A are maintained.
Start Bit0
Data C
Data C
Parity Stop Start Bit0
Parity Stop Start Bit0
The contents of data D are
discarded and those of
data A are maintained.
No interrupt request
is generated.
The contents of data D are
Data D
discarded and those of
data A are maintained.
No interrupt request
is generated.
Data D
Parity Stop
TMP89FM42A
Parity Stop