AN1753 datasheet(18/22 Pages) STMICROELECTRONICS

Part #	AN1753

Description	Software UART using ST7LITE0 12-bit autoreload timer

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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18 / 22 page

Functional software flow

AN1753

18/22

DocID9986 Rev 2

Figure 11. EI1 interrupt routine

iret

Read CNTRx

Set DCRx for 0.5 bit

Set “SP” flag & put “RxD”

in normal input mode

Clear pending interrupt

Enable output compare

interrupt & select clock

EI1_int

delay

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