Datasheet

bq27541-G1

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SLUSAL6C –NOVEMBER 2011–REVISED OCTOBER 2012

DETAILED CONFIGURATION REGISTERS DESCRIPTIONS

The Pack Configuration Register

Some bq27541-G1 pins are configured via the Pack Configuration data flash register, as indicated in Table 13.

This register is programmed/read via the methods described in Accessing the Data Flash. The register is located

at subclass = 64, offset = 0.

Table 13. Pack Configuration Bit Definition

bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0

High Byte RESCAP CALEN INTPOL INTSEL RSVD IWAKE RSNS1 RSNS0

Default = 0 0 0 1 0 0 0 1

0x11

Low Byte GNDSEL RFACTSTEP SLEEP RMFCC SE_PU SE_POL SE_EN TEMPS

Default = 0 1 1 1 0 1 1 1

0x77

RESCAP = No-load rate of compensation is applied to the reserve capacity calculation. True when set.

CALEN bq27545-G1 Calibration mode is enabled.

INTPOL = Polarity for Interrupt pin. (See Interrupt Mode)

INTSEL = Interrupt Pin select: 0 = SE Pin, 1 = HDQ pin. (See Interrupt Mode)

RSVD = Reserved. Must be 0.

IWAKE/RSNS1/RSNS0 = These bits configure the current wake function (See Wake-Up Comparator).

GNDSEL = The ADC ground select control. The V

(Pins C1, C2) is selected as ground reference when the bit is clear.

Pin A1 is selected when the bit is set.

RFACTSTEP = Enables Ra step up/down to Max/Min Res Factor before disabling Ra updates.

SLEEP = The fuel gauge can enter sleep, if operating conditions allow. True when set. (See Sleep Mode)

RM is updated with the value from FCC, on valid charge termination. True when set. (See Detection Charge

RMFCC =

Termination)

SE_PU = Pull-up enable for SE pin. True when set (push-pull). (See Shutdown Mode)

SE_POL = Polarity bit for SE pin. SE is active high when set (makes SE high when gauge is ready for shutdown). (See

Shutdown Mode)

SE_EN = Indicates if set the shutdown feature is enabled. True when set. See the System Shutdown Enable section for

details. (See Shutdown Mode)

TEMPS = Selects external thermistor for Temperature( ) measurements. True when set. (See TEMPERATURE

MEASUREMENT AND THE TS INPUT)

Product Folder Links: bq27541-G1