UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 63
UPSD3234AV-24U1T
Manufacturer Part Number
UPSD3234AV-24U1T
Description
Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
Manufacturer
STMicroelectronics
Datasheet
1.UPSD3234AV-24U1T.pdf
(170 pages)
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Figure 31. Serial Port Mode 2, Block Diagram
Figure 32. Serial Port Mode 2, Waveforms
SMOD
Phase2 Clock
Write to SBUF
Sample Times
1/2*f OSC
÷2
Bit Detector
Generator
Rx Clock
Tx Clock
0
Stop Bit
Send
Data
Shift
Shift
RxD
1
TxD
RI
TI
RxD
SBUF
Write
to
Start Bit
S1P1
Start Bit
÷16 Reset
Transition
Detector
D0
D0
1-to-0
Sample
uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
D1
D1
÷16
Interrupt
Serial
Port
D2
Rx Detector
D2
D
CL
TB8
S
Rx Clock
D3
D3
Tx Clock
Start
Start
SBUF
Read
Q
÷16
SBUF
Load
D4
D4
Zero Detector
Rx Control
Tx Control
Input Shift Register
D5
D5
Internal Bus
Internal Bus
TI
RI
SBUF
SBUF
1FFh
D6
D6
Shift
Load SBUF
D7
D7
Send
Data
Shift
Shift
RB8
TB8
Stop Bit
Stop Bit
AI06844
AI06845
Transmit
Receive
63/170
TxD
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