Analog Devices LINEAR LT8491 Manual page 29

2
I C REGISTER MAP
MEMORY
REGION REGISTER NAME
Boot BOOT_RSENSE1
(EEPROM)
BOOT_RIMON_OUT
BOOT_RSENSE2
BOOT_RDACO
BOOT_RFBOUT1
BOOT_RFBOUT2
BOOT_RDACI
BOOT_RFBIN2
BOOT_RFBIN1
BOOT_INIT_CHRG_EN
BOOT_VS3_25C
BOOT_UV_S0
BOOT_S0_UV
BOOT_S0_S1
BOOT_S1_S0
BOOT_TBAT_MIN
BOOT_TBAT_MAX
BOOT_TMR_S0
BOOT_TMR_S1
BOOT_TMR_S2
BOOT_TMR_S3
BOOT_RSTRT_IN_FLT
BOOT_RSTRT_IN_
DONEA
BOOT_RSTRT_IN_
DONEB
BOOT_RSTRT_IN_S3
BOOT_TERMINATE
BOOT_SCAN_RATE_LP
BOOT_SCAN_RATE
BOOT_CHRG_MISC
BOOT_TC3
BOOT_TC2
BOOT_TC1
BOOT_USER_CODE
BOOT_CRC
2
I C REG REF
ADDR SIZE PG. BRIEF REG. DESCRIPTION
0x88 Word 42 PCB resistor value
0x8A Word PCB resistor value
0x8C Word PCB resistor value
0x8E Word PCB resistor value
0x90 Word PCB resistor value
0x92 Word PCB resistor value
0x94 Word PCB resistor value
0x96 Word PCB resistor value
0x98 Word PCB resistor value
0x9A Byte 45 Auto start charging after IC startup
0x9B Byte 46 Stage 3 V
BAT
0x9C Byte Min. Stage 0 V
0x9D Byte Low V voltage
BAT
0x9E Byte Max. Stage 0 V
0x9F Byte Min. Stage 1 V
0xA0 Byte 50 Min. battery temperature
0xA1 Byte Max. battery temperature
0xA2 Byte 51 Stage 0 time limit
0xA3 Byte Stage 1 time limit
0xA4 Byte Stage 2 time limit
0xA5 Byte Stage 3 time limit
0xA6 Byte 52 Auto-restart when fault
0xA7 Byte Auto-restart threshold voltage
when done charging
0xA8 Byte Auto-restart delay time when done
charging
0xA9 Byte Auto-restart when in Stage 3
0xAA Byte 55 Charging termination options
0xAB Byte 56 Full panel scan rate in LP
0xAC Byte Full panel scan rate
0xAD Byte Miscellaneous charger settings
0xAE Long 58 Temperature coefficient
Word
0xB2 Temperature coefficient
0xB6 Temperature coefficient
0xBA Word 59 User input data
0xBC Word 60 Expected CRC result for boot region
For more information
DEFAULT
VALUE
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x0000 Must be configured by user.
0x00
at 25°C 0x6B
voltage 0x46
BAT
0x3E
voltage 0x8C
BAT
voltage 0x84
BAT
0x00
0x32
0x00
0x00
0x00
0x00
0x20
0x00
0x04
0x01
0x08
0x1F
0x0B
0x08
0xB41F-
FCCF
0x3760-
D090
0xBAC9-
D9D3
0x0000 -
-
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LT8491
DESCRIPTION OF DEFAULT VALUE
Don't start charging automatically after startup.
V = 95.7% of V .
S3 S2
V = 35% of V .
(UV_S0) S2
V = 31% of V .
(S0_UV) S2
V = 70% of V .
(S0_S1) S2
V = 66% of V .
(S1_S0) S2
Under temperature fault limit = 0°C.
Over temperature fault limit = 50°C.
Infinite time limit.
Infinite time limit.
Infinite time limit.
Infinite time limit.
RSTRT_ON_TMR_FLT_HRS = 1hour.
NO_RSTRT_ON_VOLTS = 0.
NO_RSTRT_ON_DISCON_FLT = 0.
NO_RSTRT_ON_BATLOW_FLT = 0.
NO_RSTRT_ON_TBAT_FLT = 0.
Don't restart charging automatically in
Charge State Done.
RSTRT_IN_DONE_HRS = 2 hours.
RSTRT_S3_C5_VS3 = 1.
S3_TMR_TERM_EN = 1.
Full panel scan every 8.5 minutes.
Full panel scan every 3 minutes.
Use V in Stage 2 disabled.
S3
LP Mode enabled.
Stage 3 disabled.
Temperature Compensation disabled.
Coefficient = –1.49e-7.
Coefficient = 1.34e-5.
Coefficient = –1.54e-3.
Expected CRC result for boot region. Default
value is factory CRC. This value will change if
the user writes EEPROM with new values.
Rev. 0
29