ds2438zt-r Maxim Integrated Products, Inc., ds2438zt-r Datasheet - Page 22
ds2438zt-r
Manufacturer Part Number
ds2438zt-r
Description
Ds2438 Smart Battery Monitor
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.DS2438ZT-R.pdf
(29 pages)
- Current page: 22 of 29
- Download datasheet (369Kb)
NOTES:
1. Temperature conversion takes up to 10 ms.
2. A/D conversion takes up to 4 ms.
3. EEPROM writes take up to 10 ms.
SAMPLE COMMAND SEQUENCE Table 12
Example: Bus Master enables the ICA, CCA, and DCA on a single DS2438 and configures it such that
the CCA/DCA information is shadowed to EEPROM. The voltage A/D is configured such that the
DS2438 will perform voltage measurements on the battery (VDD) voltage.
MASTER MODE
RX
RX
RX
RX
RX
RX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
TX
DATA (LSB FIRST)
<9 data bytes>
Read Slots
Presence
Presence
Presence
Presence
BEh00h
4Eh00h
48h00h
Reset
Reset
Reset
Reset
CCh
CCh
CCh
0Fh
22 of 29
Skip ROM
Skip ROM
Read scratchpad data and CRC
Skip ROM
DS2438 returns a “1” when Copy SP is complete
Read pulse
Presence pulse
Issue Write SP 00h command
Sets ICA, CA, EE, AD Bits active
Reset pulse
Presence pulse
Issue Read SP 00h command
Reset pulse
Presence pulse
Issue Copy SP 00h command
Reset pulse
Presence Pulse, done
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