mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 233

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

17.9.3 SCI Control Register 3
MC68HC08QA24
Freescale Semiconductor
Address:
SCI control register 3:
R8 — Received Bit 8
T8 — Transmitted Bit 8
Reset:
Read:
Write:
•
•
When the SCI is receiving 9-bit characters, R8 is the read-only ninth
bit (bit 8) of the received character. R8 is received at the same time
that the SCDR receives the other eight bits.
When the SCI is receiving 8-bit characters, R8 is a copy of the eighth
bit (bit 7). Reset has no effect on the R8 bit.
When the SCI is transmitting 9-bit characters, T8 is the read/write
ninth bit (bit 8) of the transmitted character. T8 is loaded into the
transmit shift register at the same time that the SCDR is loaded into
the transmit shift register. Reset has no effect on the T8 bit.
Stores the ninth SCI data bit received and the ninth SCI data bit to
be transmitted
Enables these interrupts:
– Receiver overrun interrupts
– Noise error interrupts
– Framing error interrupts
– Parity error interrupts
Serial Communications Interface (SCI)
$0015
Bit 7
R8
R
U
R
Figure 17-9. SCI Control Register 3 (SCC3)
= Reserved
T8
U
6
R
5
0
U = Unaffected
R
4
0
Serial Communications Interface (SCI)
ORIE
3
0
NEIE
2
0
FEIE
1
0
Technical Data
PEIE
Bit 0
0
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