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S3C72P9 Datasheet(PDF) 36 Page - Samsung semiconductor

Part # S3C72P9
Description  SINGLE-CHIP MICROCONTROLLER HAS BEEN DESIGNED FOR HIGH PERFORMANCE USING
PDF  225 Pages
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

S3C72P9 Datasheet(HTML) 36 Page - Samsung semiconductor

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ADDRESS SPACES
S3C72P9/P72P9 (Preliminary Spec)
2-24
+
+ PROGRAMMING TIP — Using the Carry Flag as a 1-Bit Accumulator
1. Set the carry flag to logic one:
SCF
; C
← 1
LD
EA,#0C3H
; EA
← #0C3H
LD
HL,#0AAH
; HL
← #0AAH
ADC
EA,HL
; EA
← #0C3H + #0AAH + #1H, C ← 1
2. Logical-AND bit 3 of address 3FH with P3.3 and output the result to P5.0:
LD
H,#3H
; Set the upper four bits of the address to the H register
; value
LDB
C,@H+0FH.3
; C
← bit 3 of 3FH
BAND
C,P3.3
; C
← C AND P3.3
LDB
P5.0,C
; Output result from carry flag to P5.0



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