MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 279

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

17.9.6 SCI Data Register
MC68HC708AS48
MOTOROLA
—
Rev. 4.0
Address:
The SCI data register is the buffer between the internal data bus and the
receive and transmit shift registers. Reset has no effect on data in the
SCI data register.
R7/T7:R0/T0 — Receive/Transmit Data Bits
Reset:
Read:
Write:
Reading address $0018 accesses the read-only received data bits,
R7:R0. Writing to address $0018 writes the data to be transmitted,
T7:T0. Reset has no effect on the SCI data register.
Serial Communications Interface (SCI)
$0018
Bit 7
R7
T7
Figure 17-15. SCI Data Register (SCDR)
R6
T6
6
R5
T5
5
Unaffected by Reset
R4
T4
4
Serial Communications Interface (SCI)
R3
T3
3
R2
T2
2
Advance Information
R1
T1
1
I/O Registers
Bit 0
R0
T0
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