BQ2023 Datasheet, PDF (2/27 Pages) Texas Instruments – SINGLE-WIRE ADVANCED BATTERY MONITOR IC FOR CELLULAR AND PDA APPLICATIONS

bq2023
SINGLEĆWIRE ADVANCED BATTERY MONITOR IC
FOR CELLULAR AND PDA APPLICATIONS
SLUS480B – MAY 2001
functional block diagram
PDET
Temp
Sense
ADC
Serial
Interface with
CRC
Generation
Controller
SDQ
STAT
ID ROM
SRP
SRN
VCC
BIAS
VFC
32 X 8 RAM
VSS
RBI
POR
CIRCUIT
7 – 32 X 8
Pages of Flash
Charge/
Discharge,
Counters-
Timers,
and Temperature
Registers
TERMINAL
NAME NO.
PDET
5
RBI
1
SDQ
4
SRN
6
SRP
7
STAT
8
VCC
2
VSS
3
Terminal Functions
I/O
DESCRIPTION
I Pack removal detection input
I/O Register backup input when VCC < V(POR), VCC output when VCC > V(POR)
I/O Single-wire data input/output port
I Current sense input 2
I Current sense input 1
O Open-drain status output
I Supply voltage
Ground
2
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