DS1073 Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated

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DS1073

3V EconOscillator/Divider

Dallas Semiconductor -> Maxim Integrated 

DS1073

NOTE:

To ensure normal operation any external pullup applied to I/O must be greater than 20kW in value.

This will cause the I/O pin to remain below VIH on power-up, resulting in normal operation at the end of

tSTAB.

Figure 12

VCC

TRANSACTION SEQUENCE

The sequence for accessing the DS1073 via the 1-Wire port is as follows:

Initialization

Function Command

Transaction/Data

INITIALIZATION

All transactions on the 1-Wire bus begin with an initialization sequence. The initialization sequence

consists of a reset pulse transmitted by the bus master followed by a presence pulse(s) transmitted by the

DS1073. The presence pulse lets the bus master know that the DS1073 is present and is ready to operate.

Figure 13

FUNCTION COMMANDS

Once the bus master has detected a presence, it can issue one of the four function commands. All

function commands are 8 bits long, and are written lsb first. A list of these commands follows:

Write DIV Register [01H]

This command allows the bus master to write to the DS1073’s DIV register.

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