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AN3064 Datasheet(PDF) 6 Page - STMicroelectronics

Part # AN3064
Description  Using the STC3100 battery monitor for gas gauge applications
PDF  15 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3064 Datasheet(HTML) 6 Page - STMicroelectronics

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Battery monitoring functions
AN3064
6/15
Doc ID 16263 Rev 1
Figure 4.
Gas gauge block diagram
The A/D converter’s output is a signed value in two’s complement format. It is positive when
the battery is charging and negative when the battery is discharging. When a conversion
cycle is completed, the result is added to the charge accumulator and the 16-bit conversion
counter is incremented.
AD converter
12/14-bit
CG
GND
28-bit
accumulator
Charge
register
Current
register
register
Counter
16-bit counter
EOC
16
16
16
Control logic
cg_enable
cg_calibration
cg_clock
Control
registers
32768 Hz
16
28
28
cg_res
2
rd_req
cg_rst
Σ
AM00832



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