MC68HC08AS32 Datasheet, PDF (174/280 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Address: $0015
Bit 7
6
5
4
3
2
1
Bit 0
Read: R8
Write: R
T8
R
R
ORIE
NEIE
FEIE
PEIE
Reset: U
U
0
0
0
0
0
0
R = Reserved
U = Unaffected
Figure 12-10. SCI Control Register 3 (SCC3)
R8 — Received Bit 8
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.
T8 — Transmitted Bit 8
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.
ORIE — Receiver Overrun Interrupt Enable Bit
This read/write bit enables SCI error CPU interrupt requests generated by the
receiver overrun bit, OR.
1 = SCI error CPU interrupt requests from OR bit enabled
0 = SCI error CPU interrupt requests from OR bit disabled
NEIE — Receiver Noise Error Interrupt Enable Bit
This read/write bit enables SCI error CPU interrupt requests generated by the
noise error bit, NE. Reset clears NEIE.
1 = SCI error CPU interrupt requests from NE bit enabled
0 = SCI error CPU interrupt requests from NE bit disabled
FEIE — Receiver Framing Error Interrupt Enable Bit
This read/write bit enables SCI error CPU interrupt requests generated by the
framing error bit, FE. Reset clears FEIE.
1 = SCI error CPU interrupt requests from FE bit enabled
0 = SCI error CPU interrupt requests from FE bit disabled
PEIE — Receiver Parity Error Interrupt Enable Bit
This read/write bit enables SCI receiver CPU interrupt requests generated by
the parity error bit, PE. (See Figure 12-11.) Reset clears PEIE.
1 = SCI error CPU interrupt requests from PE bit enabled
0 = SCI error CPU interrupt requests from PE bit disabled
Data Sheet
174
MC68HC08AS32 — Rev. 4.1
Freescale Semiconductor