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UPSD325X Datasheet(PDF) 68 Page - STMicroelectronics

Part # UPSD325X
Description  Flash Programmable System Devices with 8032 Microcontroller Core and 256Kbit SRAM
PDF  176 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD325X Datasheet(HTML) 68 Page - STMicroelectronics

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µPSD325X DEVICES
68/176
Figure 32. Serial Port Mode 2, Waveforms
Figure 33. Serial Port Mode 3, Block Diagram
AI06845
Write to SBUF
Data
Shift
TxD
TI
Rx Clock
RxD
Bit Detector
Sample Times
Shift
RI
S1P1
÷16 Reset
Receive
Transmit
D0
D1
D2
D3
D4
D5
D6
D7
Send
Tx Clock
Start Bit
Stop Bit
TB8
D0
D1
D2
D3
D4
D5
D6
D7
Start Bit
Stop Bit
RB8
Stop Bit
Generator
AI06846
Zero Detector
Internal Bus
Tx Control
Rx Control
Internal Bus
SBUF
Write
to
SBUF
Read
SBUF
Load
SBUF
SBUF
Input Shift Register
Shift
Serial
Port
Interrupt
Rx Clock
Start
Tx Clock
Start
Shift
Shift
Send
Load SBUF
TI
RI
CL
DS
Q
1FFh
TxD
Data
Rx Detector
RxD
1-to-0
Transition
Detector
÷16
Sample
÷16
÷2
TB8
Timer1
Overflow
Timer2
Overflow
0
01
1
01
TCLK
RCLK
SMOD



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