参数资料
型号: MC68HC05C8ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 118/156页
文件大小: 755K
代理商: MC68HC05C8ACB
NON-DISCLOSURE
AGREEMENT
REQUIRED
Serial Communications Interface (SCI)
General Release Specification
MC68HC05C8A Rev. 3.0
64
Serial Communications Interface (SCI)
MOTOROLA
9.3 Features
Features of the SCI module include:
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
9.4 SCI Data Format
The SCI uses the standard non-return-to-zero mark/space data format
illustrated in Figure 9-1.
Figure 9-1. SCI Data Format
8-BIT DATA FORMAT
(BIT M IN SCCR1 CLEAR)
9-BIT DATA FORMAT
(BIT M IN SCCR1 SET)
START
BIT
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8
STOP
BIT
NEXT
START
BIT
BIT 0
BIT 1
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
START
BIT
STOP
BIT
NEXT
START
BIT
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