Serial Communications Interface (SCI)
Technical Data
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A — Rev. 5.0
80
Serial Communications Interface (SCI)
MOTOROLA
9.6.3 SCI Control Register 2
SCI control register 2 has these functions:
Enables the SCI receiver and SCI receiver interrupts
Enables the SCI transmitter and SCI transmitter interrupts
Enables SCI receiver idle interrupts
Enables SCI transmission complete interrupts
Enables SCI wakeup
Transmits SCI break characters
TIE — Transmit Interrupt Enable Bit
This read/write bit enables SCI interrupt requests when the TDRE bit
becomes set. Reset clears the TIE bit.
1 = TDRE interrupt requests enabled
0 = TDRE interrupt requests disabled
TCIE — Transmission Complete Interrupt Enable Bit
This read/write bit enables SCI interrupt requests when the TC bit
becomes set. Reset clears the TCIE bit
1 = TC interrupt requests enabled
0 = TC interrupt requests disabled
RIE — Receive Interrupt Enable Bit
This read/write bit enables SCI interrupt requests when the RDRF bit
or the OR bit becomes set. Reset clears the RIE bit.
1 = RDRF interrupt requests enabled
0 = RDRF interrupt requests disabled
Address: $000F
Bit 7
654321
Bit 0
Read:
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
Write:
Reset:
00000000
Figure 9-6. SCI Control Register 2 (SCCR2)