s908ab32ag0cfue Freescale Semiconductor, Inc, s908ab32ag0cfue Datasheet - Page 274

• Manufacturer Part Number: s908ab32ag0cfue
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, 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.
Serial Communications Interface Module (SCI)
$0018
Bit 7
R7
T7
Figure 15-15. SCI Data Register (SCDR)
R6
T6
6
R5
T5
5
Unaffected by reset
R4
T4
4
R3
T3
3
MC68HC908AB32
R2
Freescale Semiconductor
T2
2
R1
T1
1
—
Rev. 1.1
Bit 0
R0
T0