DS2438 Dallas Semiconducotr, DS2438 Datasheet - Page 23

• Manufacturer Part Number: DS2438
• Description: Smart Battery Monitor
• Manufacturer: Dallas Semiconducotr

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
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
DATA (LSB FIRST)
<9 data bytes>
Presence
Presence
Presence
Presence
Presence
BEh00h
B8h00h
Reset
Reset
Reset
Reset
Reset
CCh
CCh
CCh
CCh
B4h
44h
23 of 29
Reset pulse
Presence pulse
Skip ROM
Issue Convert Temperature command, Read Slots
Reset pulse
Presence pulse
Skip ROM
Issue Convert Voltage command, Read Slots
Reset pulse
Presence pulse
Skip ROM
Issue Recall Memory page 00h command
Reset pulse
Presence pulse
Skip ROM
Issue Read SP 00h command
Read scratchpad data and CRC. This page contains
temperature, voltage, and current measurements.
Reset pulse
Presence pulse, done
COMMENTS
DS2438