Datasheet

DS2438
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SAMPLE COMMAND SEQUENCE Table 13
Example: Bus Master issues a temperature and voltage conversion, then reads the temperature, battery
voltage, battery current, all on a single DS2438.
MASTER MODE DATA (LSB FIRST) COMMENTS
TX Reset Reset pulse
RX Presence Presence pulse
TX CCh Skip ROM
TX 44h Issue Convert Temperature command, Read Slots
TX Reset Reset pulse
RX Presence Presence pulse
TX CCh Skip ROM
TX B4h Issue Convert Voltage command, Read Slots
TX Reset Reset pulse
RX Presence Presence pulse
TX CCh Skip ROM
TX B8h00h Issue Recall Memory page 00h command
TX Reset Reset pulse
RX Presence Presence pulse
TX CCh Skip ROM
TX BEh00h Issue Read SP 00h command
RX <9 data bytes> Read scratchpad data and CRC. This page contains
temperature, voltage, and current measurements.
TX Reset Reset pulse
RX Presence Presence pulse, done