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ST72325AR7-Auto 데이터시트(PDF) 237 Page - STMicroelectronics

부품명 ST72325AR7-Auto
상세설명  SCI asynchronous serial interface
PDF  243 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72325AR7-Auto 데이터시트(HTML) 237 Page - STMicroelectronics

Back Button ST72325AR7-Auto Datasheet HTML 233Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 234Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 235Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 236Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 237Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 238Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 239Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 240Page - STMicroelectronics ST72325AR7-Auto Datasheet HTML 241Page - STMicroelectronics Next Button
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Obsolete
Product(s)
- Obsolete
Product(s)
ST72325xxx-Auto
Known limitations
Doc ID 13770 Rev 3
237/243
LD sema,A
; set the semaphore to '1'
LD A,PFDR
AND A,#02
LD
X,A
; store the level before writing to PxOR/PxDDR
LD A,#$90
LD PFDDR,A
; Write to PFDDR
LD A,#$ff
LD
PFOR,A
; Write to PFOR
LD A,PFDR
AND A,#02
LD Y,A
; store the level after writing to PxOR/PxDDR
LD A,X
; check for falling edge
cp A,#02
jrne OUT
TNZ Y
jrne OUT
LD A,sema
; check the semaphore status if edge is detected
CP A,#01
jrne OUT
call call_routine
; call the interrupt routine
OUT:LD A,#00
LD sema,A
.call_routine
; entry to call_routine
PUSH A
PUSH X
PUSH CC



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