mc68hc908as60 Freescale Semiconductor, Inc, mc68hc908as60 Datasheet - Page 250
mc68hc908as60
Manufacturer Part Number
mc68hc908as60
Description
Mc68hc908as60 Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908AS60.pdf
(454 pages)
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Serial Communications Interface (SCI)
17.9.4 SCI Status Register 1
Technical Data
Address:
SCI status register 1 contains flags to signal these conditions:
SCTE — SCI Transmitter Empty Bit
TC — Transmission Complete Bit
Reset:
Read:
Write:
•
•
•
•
•
•
•
•
This clearable, read-only bit is set when the SCDR transfers a
character to the transmit shift register. SCTE can generate an SCI
transmitter CPU interrupt request. When the SCTIE bit in SCC2 is set,
SCTE generates an SCI transmitter CPU interrupt request. In normal
operation, clear the SCTE bit by reading SCS1 with SCTE set and
then writing to SCDR. Reset sets the SCTE bit.
This read-only bit is set when the SCTE bit is set, and no data,
preamble, or break character is being transmitted. TC generates an
SCI transmitter CPU interrupt request if the TCIE bit in SCC2 is also
set. TC is cleared automatically when data, preamble, or break is
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = SCDR data transferred to transmit shift register
0 = SCDR data not transferred to transmit shift register
Transfer of SCDR data to transmit shift register complete
Transmission complete
Transfer of receive shift register data to SCDR complete
Receiver input idle
Receiver overrun
Noisy data
Framing error
Parity error
Serial Communications Interface (SCI)
$0016
SCTE
Bit 7
1
Figure 17-12. SCI Status Register 1 (SCS1)
Go to: www.freescale.com
= Unimplemented
TC
6
1
SCRF
5
0
IDLE
4
0
OR
3
0
MC68HC908AS60 — Rev. 1.0
NF
2
0
FE
1
0
Bit 0
PE
0
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