Motorola MC68HC908AB32 User Manual

Serial Communications Interface
Technical Data MC68HC908AB32 — Rev. 1.0
274 Serial Communications Interface Module (SCI) MOTOROLA
15.9.6 SCI Data Register
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
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.
NOTE: Do not use read/modify/write instructions on the SCI data register.
Address: $0018
Bit 7 654321Bit 0
Read: R7 R6 R5 R4 R3 R2 R1 R0
Write: T7 T6 T5 T4 T3 T2 T1 T0
Reset: Unaffected by reset
Figure 15-15. SCI Data Register (SCDR)

Motorola MC68HC908AB32 Specifications

General

Brand	Motorola
Model	MC68HC908AB32
Category	Controller
Language	English