DS1205S Ver la hoja de datos (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS1205S

MultiKey Chip

Dallas Semiconductor -> Maxim Integrated 

DS1205S

PASS-THRU MODE

A host connected to the 1-wire bus may send function

commands directly to the DS1205S without preceding

them with 1-wire I/O commands by using the pass-thru

command (CCh). This command bypasses the serial

number and consequently it can only be used when

there is one DS1205S on the 1-wire bus.

1-WIRE/3-WIRE ARBITRATION

The DS1205S can utilize both the 1-wire and the 3-wire

busses simultaneously. Neither input bus has priority

over the other. Instead, if both inputs are being used, the

signal arriving first will take precedence. More simply, if

the 1-wire interface becomes active before the 3-wire in-

terface, all communications will take place on the 1-wire

bus. The 3-wire bus will be ignored in this case. The

same condition occurs for the 1-wire interface if the

3-wire interface becomes active first.

021798 14/17

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