BQ28Z560-R1_14 Datasheet, PDF (24/61 Pages) Texas Instruments – Single Cell Li-Ion Battery Gas Gauge

bq28z560-R1
Not Recommended For New Designs
SLUSBD3 – APRIL 2013
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CLEAR_HDQINTEN: 0x0016
Instructs the gas gauge to set the CONTROL_STATUS [HDQIntEn] bit to 0. This disables the HDQ Interrupt
function.
STATIC_CHEM_DF_CHKSUM: 0x0017
Instructs the gas gauge to calculate chemistry checksum as a 16-bit unsigned integer sum of all static chemistry
data. The most significant bit (MSB) of the checksum is masked yielding a 15-bit checksum. This checksum is
compared with the value stored in the data flash Static Chem DF Checksum. If the value matches, the MSB will
be cleared to indicate a pass. If it does not match, the MSB will be set to indicate failure.
DSG FET OFF (HOST_DISCONNECT): 0x0018
Instructs the gas gauge to force the protection DOUT pin to a low level. This prohibits discharging the battery by
turning off the external discharge control N-channel MOSFET.
DSG FET ON (HOST_CONNECT): 0x0019
Instructs the gas gauge to release the DOUT high if no other conditions exist to force the pin low. This allows
discharging the battery by turning on the external discharge control N-channel MOSFET.
SEALED: 0x0020
Instructs the gas gauge to transition from UNSEALED state to SEALED state. The gas gauge should always be
set to SEALED state for use in customers' end equipment.
IT ENABLE: 0x0021
This command forces the gas gauge to begin the Impedance Track algorithm, sets Bit 2 of UpdateStatus, and
causes the [VOK] and [QEN] flags to be set in the CONTROL_STATUS register. [VOK] is cleared if the voltages
are not suitable for a Qmax update. Once set, [QEN] cannot be cleared. This command is only available when
the gas gauge is UNSEALED and is typically enabled at the last step of production after a system test is
completed.
The CFET and DFET are not automatically enabled until the IT Enable bit is sent. Prior to this, to control these
FETs, a command must be sent to set the CHGFET and DSGFET bits in the Flags Bit Definitions Register to
enable the COUT and DOUT, respectively.
CAL_ENABLE: 0x002D
This command toggles the CalEn bit in the PACK Configuration register.
RESET: 0x0041
This command instructs the gas gauge to perform a full reset. This command is only available when the gas
gauge is unsealed.
EXIT_CAL: 0x0080
This command instructs the gas gauge to exit CALIBRATION mode.
ENTER_CAL: 0x0081
This command instructs the gas gauge to enter CALIBRATION mode.
OFFSET_CAL: 0x0082
This command instructs the gas gauge to perform offset calibration.
AtRate(): 0x02/0x03
The AtRate() read-/write-word function is the first half of a two-function command call-set used to set the AtRate
value in calculations made by the AtRateTimeToEmpty() function. The AtRate() units are in mA.
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