BQ28Z560-R1_14 Datasheet, PDF (38/61 Pages) Texas Instruments – Single Cell Li-Ion Battery Gas Gauge

bq28z560-R1
Not Recommended For New Designs
SLUSBD3 – APRIL 2013
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SleepWakeChg = If set to 1 will accumulate the charge as if it was active for 10 s ( instead of 20 s).
ChgFetTerm =
If set, the CHG FET is turned OFF on detecting primary charge termination. The CHG FET is allowed to turn
back ON again when RSOC < TCA Clear %.
CFET_INIT= Sets initial state of CHG FET at reset condition. 0 = CHG FET OFF, 1 = CHG FET ON.
DFET_INIT= Sets initial state of DSG FET at reset condition. 0 = DSG FET OFF, 1 = DSG FET ON.
PIN12F1
0
0
1
1
PIN12F0
0
1
0
1
State
NC or HDQ (default)
CHG FET
Bat Alert
RSVD
Battery Alert Default Configuration Register
When the system is configured as an interrupt indication, the bq28z560-R1 allows settings to be configured
based on which faults are OR'ed for indication on the Alert output Table 18. This register is programmed/read via
the methods described in ACCESSING THE DATA FLASH. The register is located at subclass = 64, offset = 4.
Bit 15
UTC_EN
Table 18. Battery Alert Default Configuration Bit Definition
Bit 14
UTD_EN
Bit 13
RSVD
Bit 12
RSVD
Bit 11
RSVD
Bit 10
RSVD
Bit 9
RSVD
Bit 8
RSVD
Bit 7
OTC_EN
Bit 6
OTD_EN
Bit 5
BH_EN
Bit 4
BL_EN
Bit 3
RSVD
Bit 2
SOC1_EN
Bit 1
OCC_EN
Bit 0
OCD_EN
UTC_EN = Allows detection of Under Temperature Charging when set to 1. Default is 0.
UTD_EM = Allows detection of Under Temperature Discharging when set to 1. Default is 0.
RSVD = Reserved. Default = 0.
OTC_EN = Allows detection of Over Temperature Charging when set to 1. Default is 0.
OTD_EN = Allows detection of Over Temperature Discharging when set to 1. Default is 0.
BH_EN = Allows detection of Battery High when set to 1. Default is 0.
BL_EN = Allows detection of Battery Low when set to 1. Default is 0.
RSVD = Reserved. Default = 0.
SOC1_EN Allows detection of SOC low when set to 1. Default is 0.
OCC_EN = Allows detection of Overcurrent in CHARGE mode when set to 1. Default is 0.
OCD_EN = Allows detection of Over Current in Discharge mode when set to 1. Default is 0.
NOTE
Important: The enable flags (Bits 7 to 4) are the reset values. Changing the data flash will
not take effect until the gas gauge is re-started. Read/Write of the BatAlert_Configuration
I²C data controls the runtime alert mask.
MANUFACTURER INFORMATION BLOCKS
The bq28z560-R1 contains 64 bytes of user-programmable data flash storage: Manufacturer Info Block A and
Manufacturer Info Block B. The method for accessing these memory locations is slightly different, depending
on whether the device is in UNSEALED or SEALED modes.
When in UNSEALED mode and when and 0x00 has been written to BlockDataControl(), accessing the
Manufacturer Info Blocks is identical to accessing general data flash locations. First, a DataFlashClass()
command is used to set the subclass, then a DataFlashBlock() command sets the offset for the first data flash
address within the subclass. The BlockData() command codes contain the referenced data flash data. When
writing the data flash, a checksum is expected to be received by BlockDataChecksum(). Only when the
checksum is received and verified is the data actually written to data flash.
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