BQ26231 Datasheet, PDF (2/18 Pages) Texas Instruments – LOW COST BATTERY COULOMB COUNTER FOR EMBEDDED PORTABLE APPLICATIONS

bq26231
SLUS491 – JULY 2001
functional block diagram
System
I/O
and
Control
HDQ
SR1
Differential
Dynamically
Balanced VFC
SR2
VCC
Calibration and
Power Control
Bandgap
Voltage
Reference
Temperature-
Compensated
Precision
Oscillator
VSS
Timer
Temperature
Sensor
TERMINAL
NAME NO.
NC
1
VCC
2
VSS
3
HDQ
4
RBI
5
SR1
6
SR2
7
NC
8
Terminal Functions
I/O
DESCRIPTION
No connect. This pin must be left floating.
I Supply voltage
Ground
I/O Single-wire HDQ interface
I Register backup input
I Current sense input 1
I Current sense input 2
No connect. This pin must be left floating.
Registers
RBI
Counter
Control
2
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