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UPSD3422 Datasheet(PDF) 133 Page - STMicroelectronics

Part # UPSD3422
Description  Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic
PDF  293 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3422 Datasheet(HTML) 133 Page - STMicroelectronics

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uPSD34xx
I2C interface
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Does status.TX_MODE = 1?
If Yes, Master wants transmit mode
–
Exit ISR, indicate Master wants Slv-Xmit mode
If No, Master wants Slave-Recv mode
–
dummy = S1DAT, read to release bus
–
Exit ISR, ready to recv data on next interrupt
C:
(Interrupt is from Slv receiving data from Mastr)
–
recv_buf[buffer_index] = S1DAT, read byte
–
Exit ISR, recv next byte on next interrupt



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