MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 274

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Communications Interface
15.9.6 SCI Data Register
Technical Data
274
NOTE:
Address:
The SCI data register (SCDR) 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
Do not use read/modify/write instructions on the SCI data register.
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.
Freescale Semiconductor, Inc.
Serial Communications Interface Module (SCI)
For More Information On This Product,
$0018
Bit 7
R7
T7
Go to: www.freescale.com
Figure 15-15. SCI Data Register (SCDR)
R6
T6
6
R5
T5
5
Unaffected by reset
R4
T4
4
R3
T3
3
MC68HC908AB32
R2
T2
2
R1
T1
1
MOTOROLA
—
Rev. 1.0
Bit 0
R0
T0