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(MicroCAN), , iButton. iButton Dallas Semiconductor.
iButton Dallas Semiconductor
iButton - , , 16.3 . , . iButton MicroCan ( ) 16.3 . : 3.1 ( F3) 5.9 ( F5). , master , . MicroCan 5.9 . , . MicroCan . , MicroCan iButton Dallas Semiconductor, 3.
, , . , ( ) - . , , . . 2-1 iButton.
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. 2-1: iButton.
CMOS (), - ( CMOS ), iButton . ( , ), , iButton (. . 2-2).
. 2-2: iButton.
CMOS 5 , VDD (5 ) (. . 2-3).
. 2-3: ( ).
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iButton, , , , . 1-Wire. (. . , ), , -. (master ), , iButton ( , slave ). slave-. , , master- (, , iButton), "" iButton slave-. master-.
, LSB (Least Significant Bit). master slave , master . () (. 0 . 1) . master, slave. -. - , . . 2-5 .
. 2-5: -.
( ) slave- iButton , master, . presence pulse ( , presence). Master iButton presence, iButton , (reset pulse, reset).
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iButton reset , , , iButton presence. reset presence . 2-6.
. 2-6: RESET PRESENCE.
presence iButton . iButton -, iButton 1 0. .
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. 1-8: ROM ( iButton, - DS1990A. ).