mc68hc711k4 Freescale Semiconductor, Inc, mc68hc711k4 Datasheet - Page 149

• Manufacturer Part Number: mc68hc711k4
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

7.1 Contents
7.2 Introduction
M68HC11K Family
MOTOROLA
Technical Data — M68HC11K Family
Section 7. Serial Communications Interface (SCI)
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
7.9.1
7.9.2
7.9.3
7.9.4
7.9.5
7.9.6
The serial communications interface (SCI) is a universal asynchronous
receiver transmitter (UART) employing a standard non-return-to-zero
(NRZ) format. Several baud rates are available. The SCI transmitter and
receiver are independent, but they use the same data format and baud
rate.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Transmit Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151
Receive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Wakeup Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Short Mode Idle Line Detection . . . . . . . . . . . . . . . . . . . . . . .157
Baud Rate Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
SCI Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .158
Serial Communications Interface (SCI)
SCI Baud Rate Control Register . . . . . . . . . . . . . . . . . . . . 158
Serial Communications Control Register 1 . . . . . . . . . . . . 160
Serial Communications Control Register 2 . . . . . . . . . . . . 161
Serial Communication Status Register 1 . . . . . . . . . . . . . . 162
Serial Communication Status Register 2 . . . . . . . . . . . . . . 164
Serial Communications Data Register . . . . . . . . . . . . . . . . 165
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Technical Data
149