BQ26501_16 Datasheet, PDF (15/33 Pages) Texas Instruments – HANDHELD APPLICATIONS

Not Recommended For New Designs
bq26501
ą
SLUS586B − OCTOBER 2003 − REVISED MARCH 2004
APPLICATION INFORMATION
Reserved Registers
The addresses 0x14 – 0x6D and addresses 0x6F – 0x75 are reserved and cannot be written by the host.
EEPROM Enable Register (EE_EN) – Address 0x6E
Register used to enable host writes to EEPROM data locations (addresses 0x76 – 0x7F). Host must write data
0xDD to this register to enable EEPROM programming. See the Programming the EEPROM section for further
information on programming the EEPROM bytes.
EEPROM Data Registers (EE_DATA) – Address 0x76 – 0x7F
The EEPROM data registers contain information vital to the performance of the device. These registers are to
be programmed during pack manufacturing to allow flexibility in the design values of the battery to be monitored.
The EEPROM data registers are listed in Table 2. Detailed descriptions of what should be programmed follows.
See Programming the EEPROM for detailed information on writing the values to EEPROM.
ADDRESS
0x7F
0x7E
0x7D
0x7C
0x7B
0x7A
0x79
0x78
0x77
0x76
Table 2. bq26501 EEPROM Memory Map
NAME
TCOMP
DCOMP
ID3
PKCFG
TAPER
DMFSD
ISLC
SEDV1
SEDVF
ILMD
FUNCTION
Temperature compensation constants, OR, ID#1
Discharge rate compensation constants, OR, ID#2
ID#3
Pack configuration values
Charge termination taper current
Digital magnitude filter and self-discharge rate constants
Initial standby load current
Scaled EDV1 threshold
Scaled EDVF threshold
Initial last measured discharge high byte
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