參數(shù)資料
型號: MC68HC705C9A
廠商: Motorola, Inc.
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 87/160頁
文件大?。?/td> 2076K
代理商: MC68HC705C9A
Serial Communications Interface (SCI)
Features
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
Serial Communications Interface (SCI)
For More Information On This Product,
Go to: www.freescale.com
87
Figure 9-1. Serial Communications Interface Block Diagram
NOTE:
The serial communications data register (SCI SCDR) is controlled by the
internal R/W signal. It is the transmit data register when written to and
the receive data register when read.
+
+
INTERNAL BUS
SCI INTERRUPT
TRANSMIT
DATA
REGISTER
RECEIVE
DATA
REGISTER
TDO
PIN
RDI
PIN
TRANSMITTER
CONTROL
RECEIVER
CONTROL
CLOCK
RECEIVER
FLAG
CONTROL
TIE
TCIE
RIE
ILIE
TE
RE
SBK
RWU
7
6
5
5
4
3
3
2
1
0
$000F
SCCR2
SCSR
$0010
1
SCCR1
$000E
TRDE
TC
RDRF
IDLE
OR
NF
FE
TE
SBK
$0011
R8
T8
M
WAKE
0
1
2
4
6
7
7
6
5
2
3
4
WAKEUP
UNIT
RECEIVE
DATA SHIFT
REGISTER
TRANSMIT
DATA SHIFT
REGISTER
$0011
7
&
&
&
&
F
Freescale Semiconductor, Inc.
n
.
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