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ST90135 датащи(PDF) 142 Page - STMicroelectronics

номер детали ST90135
подробное описание детали  8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM
PDF  190 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST90135 датащи(HTML) 142 Page - STMicroelectronics

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ST90158 - SERIAL COMMUNICATIONS INTERFACE (SCI)
SERIAL COMMUNICATIONS INTERFACE (Cont’d)
9.5.2 Functional Description
The SCI offers four operating modes:
– Asynchronous mode
– Asynchronous mode with synchronous clock
– Serial expansion mode
– Synchronous mode
Asynchronous mode, Asynchronous mode with
synchronous clock and Serial expansion mode
output data with the same serial frame format. The
differences lie in the data sampling clock rates
(1X, 16X) and in the protocol used.
Figure 76. SCI Functional Schematic
Note: Some pins may not be available on some devices. Refer to the device Pinout Description.
Divider by 16
1
0
1
0
Divider by 16
CD
CD
The control signals marked with (*) are active only in synchronous mode (SMEN=1)
Polarity
Polarity
TXclk / CLKout
RX shift
register
TX buffer
register
TX shift
register
RTSEN (*)
Enveloper
AEN (*)
OUTSB (*)
Sout
AEN
RX buffer
register
Baud rate
generator
RXclk
OCKSB (*)
LBEN (*)
INTCLK
XBRG
AEN (*)
OCLK
XTCLK
DCDEN (*)
DCD
RTS
Sin
INPL (*)
LBEN
OUTPL (*)
INPE N (*)
OCKPL (*)
XRX
OCLK
VR02054
9



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