Datasheet

Serial Communications Interface (SCI)
Register Descriptions
MC9S12DP256 — Revision 1.1
Serial Communications Interface (SCI)
SCI Data Registers
(SCIDRH/L)
Read: anytime; reading accesses SCI receive data register
Write: anytime; writing accesses SCI transmit data register; writing to R8
has no effect
R8 — Received Bit 8
R8 is the ninth data bit received when the SCI is configured for 9-bit
data format (M = 1).
T8 — Transmit Bit 8
T8 is the ninth data bit transmitted when the SCI is configured for 9-bit
data format (M = 1).
R7–R0 — Received bits seven through zero for 9-bit or 8-bit data
formats
T7–T0 — Transmit bits seven through zero for 9-bit or 8-bit formats
NOTE: If the value of T8 is the same as in the previous transmission, T8 does
not have to be rewritten. The same value is transmitted until T8 is
rewritten.
Address Offset: $006
7 6 5 4 3 2 1 0
R R8
T8
0 0 0 0 0 0
W
RESET: 0 0 0 0 0 0 0 0
= Unimplemented or Reserved
Address Offset: $007
7 6 5 4 3 2 1 0
R R7 R6 R5 R4 R3 R2 R1 R0
W T7 T6 T5 T4 T3 T2 T1 T0
RESET: 0 0 0 0 0 0 0 0
= Unimplemented or Reserved
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