LTC3350_15 Datasheet, PDF (32/46 Pages) Linear Technology – High Current Supercapacitor Backup Controller and System Monitor

LTC3350
Register Map
REGISTER
SUB ADDR
R/W
BITS
clr_alarms
0x00
R/W
15:0
msk_alarms
0x01
R/W
15:0
msk_mon_status
0x02
R/W
9:0
cap_esr_per
0x04
R/W
15:0
vcapfb_dac
0x05
R/W
3:0
vshunt
0x06
R/W
15:0
cap_uv_lvl
0x07
R/W
15:0
cap_ov_lvl
0x08
R/W
15:0
gpi_uv_lvl
0x09
R/W
15:0
gpi_ov_lvl
0x0A
R/W
15:0
vin_uv_lvl
0x0B
R/W
15:0
vin_ov_lvl
0x0C
R/W
15:0
vcap_uv_lvl
0x0D
R/W
15:0
vcap_ov_lvl
0x0E
R/W
15:0
vout_uv_lvl
0x0F
R/W
15:0
vout_ov_lvl
0x10
R/W
15:0
iin_oc_lvl
0x11
R/W
15:0
ichg_uc_lvl
0x12
R/W
15:0
dtemp_cold_lvl
0x13
R/W
15:0
dtemp_hot_lvl
0x14
R/W
15:0
esr_hi_lvl
0x15
R/W
15:0
cap_lo_lvl
0x16
R/W
15:0
ctl_reg
0x17
R/W
3:0
num_caps
0x1A
R
1:0
chrg_status
0x1B
R
11:0
mon_status
0x1C
R
9:0
alarm_reg
0x1D
R
15:0
meas_cap
0x1E
R
15:0
meas_esr
0x1F
R
15:0
meas_vcap1
0x20
R
15:0
meas_vcap2
0x21
R
15:0
meas_vcap3
0x22
R
15:0
meas_vcap4
0x23
R
15:0
meas_gpi
0x24
R
15:0
meas_vin
0x25
R
15:0
meas_vcap
0x26
R
15:0
meas_vout
0x27
R
15:0
meas_iin
0x28
R
15:0
meas_ichg
0x29
R
15:0
meas_dtemp
0x2A
R
15:0
Registers at sub address 0x03, 0x18, 0x19, 0x2B-0xFF are unused.
DESCRIPTION
Clear alarms register
Enable/mask alarms register
Enable/mask monitor status alerts
Capacitance/ESR measurement period
V_CAP voltage reference DAC setting
Capacitor shunt voltage setting
Capacitor undervoltage alarm level
Capacitor overvoltage alarm level
GPI undervoltage alarm level
GPI overvoltage alarm level
V_IN undervoltage alarm level
V_IN overvoltage alarm level
V_CAP undervoltage alarm level
V_CAP overvoltage alarm level
V_OUT undervoltage alarm level
V_OUT overvoltage alarm level
I_IN overcurrent alarm level
I_CHG undercurrent alarm level
Die temperature cold alarm level
Die temperature hot alarm level
ESR high alarm level
Capacitance low alarm level
Control register
Number of capacitors configured
Charger status register
Monitor status register
Active alarms register
Measured capacitance value
Measured ESR value
Measured capacitor one voltage
Measured capacitor two voltage
Measured capacitor three voltage
Measured capacitor four voltage
Measured GPI pin voltage
Measured V_IN voltage
Measured V_CAP voltage
Measured V_OUT voltage
Measured I_IN current
Measured I_CHG current
Measured die temperature
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DEFAULT
0x0000
0x0000
0x0000
0x0000
0xF
0x3999
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0x0000
0b0000
–
–
–
0x0000
–
–
–
–
–
–
–
–
–
–
–
–
–
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