參數(shù)資料
型號(hào): DS2438
英文描述: Smart Battery Monitor
中文描述: 智能電池監(jiān)視器
文件頁(yè)數(shù): 22/29頁(yè)
文件大小: 351K
代理商: DS2438
DS2438
22 of 29
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
TX
RX
TX
TX
TX
TX
RX
TX
TX
RX
TX
RX
TX
TX
RX
TX
RX
DATA (LSB FIRST)
Reset
Presence
CCh
4Eh00h
0Fh
Reset
Presence
CCh
BEh00h
<9 data bytes>
Reset
Presence
CCh
48h00h
Read Slots
Reset
Presence
COMMENTS
Read pulse
Presence pulse
Skip ROM
Issue Write SP 00h command
Sets ICA, CA, EE, AD Bits active
Reset pulse
Presence pulse
Skip ROM
Issue Read SP 00h command
Read scratchpad data and CRC
Reset pulse
Presence pulse
Skip ROM
Issue Copy SP 00h command
DS2438 returns a “1” when Copy SP is complete
Reset pulse
Presence Pulse, done
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