CM68HC05C4ACFB Motorola / Freescale Semiconductor, CM68HC05C4ACFB Datasheet - Page 64
![no-image](/images/no-image-200.jpg)
CM68HC05C4ACFB
Manufacturer Part Number
CM68HC05C4ACFB
Description
Microcontroller
Manufacturer
Motorola / Freescale Semiconductor
Datasheet
1.CM68HC05C4ACFB.pdf
(156 pages)
- Current page: 64 of 156
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Serial Communications Interface (SCI)
9.3 Features
9.4 SCI Data Format
General Release Specification
64
Features of the SCI module include:
The SCI uses the standard non-return-to-zero mark/space data format
illustrated in
•
•
•
•
•
•
•
•
•
START
START
BIT
BIT
Standard Mark/Space Non-Return-to-Zero Format
Full-Duplex Operation
32 Programmable Baud Rates
Programmable 8-Bit or 9-Bit Character Length
Separately Enabled Transmitter and Receiver
Two Receiver Wakeup Methods:
– Idle Line Wakeup
– Address Mark Wakeup
Interrupt-Driven Operation Capability with Five Interrupt Flags:
– Transmitter Data Register Empty
– Transmission Complete
– Receiver Data Register Full
– Receiver Overrun
– Idle Receiver Input
Receiver Framing Error Detection
1/16 Bit-Time Noise Detection
Serial Communications Interface (SCI)
BIT 0
BIT 0
Figure
BIT 1
BIT 1
9-1.
BIT 2
BIT 2
Figure 9-1. SCI Data Format
BIT 3
BIT 3
BIT M IN SCCR1 CLEAR
8-BIT DATA FORMAT
9-BIT DATA FORMAT
BIT M IN SCCR1 SET
BIT 4
BIT 4
BIT 5
BIT 5
BIT 6
BIT 6
BIT 7
BIT 7
MC68HC05C4A
STOP
BIT 8
BIT
START
NEXT
STOP
BIT
BIT
MOTOROLA
—
START
NEXT
BIT
Rev. 4.0
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