DS2790 Maxim Integrated Products, DS2790 Datasheet - Page 33

• Manufacturer Part Number: DS2790
• Description: Programmable 1-Cell Li-Ion Fuel Gauge and Protector
• Manufacturer: Maxim Integrated Products

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Field
IBIAS
COCT
DOCT
SCDT
Reserved
OBEN
Figure 16. Temperature Register Format
ADC Configuration Register
The ADC Configuration register located at word address 600Ah controls current measurement bias and offset
blanking as well as current fault limits for the protector circuitry. ADC Configuration register bits are read and write
accessable by application code. COCT, DOCT, and SCDT bit functionality is described under Lithium-Ion
Protection.
Figure 17. ADC Configuration Register Format
ADDRESS
4
MSb
“S”: sign bit
S
600AH
15:8
7:6
5:4
2:1
Bit
2
3
0
9
2
8
2
7
Read Only
Format
R/W
R/W
R/W
R/W
R/W
2
6
2
5
Word Address 6005h
2
4
Accumulation Register Bias
8-bit 2’s complement value that is added to the ACR on every
update.
Charge Overcurrent Threshold¾See Lithium-Ion Protection. See
V
0 0 = 16mV V
0 1 = 32mV V
1 0 = 48mV V
1 1 = 64mV V
Discharge Overcurrent and Short Circuit Thresholds¾See
Lithium-Ion Protection. See V
for limit tolerances.
0 0 = 16mV V
0 1 = 32mV V
1 0 = 48mV V
1 1 = 64mV V
Short Circuit Delay Time¾See Lithium-Ion Protection. See
the specification table for limit tolerances.
0 = 250µs
1 = 2.0ms
Undefined
Offset Blanking Enable
0 = All current measurements accumulated into the ACR.
1 = Positive current measurements less than 62.5µV/R
accumulated into the ACR.
OC
DS2790 Programmable 1-Cell Li-Ion Fuel Gauge and Protector
33 of 41
2
in the specification table for limit tolerances.
3
2
2
OC
OC
OC
OC
OC
OC
OC
OC
2
, 100mV V
, 140mV V
, 180mV V
, 220mV V
1
2
0
BIT DEFINITION
Allowable Values
SC
SC
SC
SC
X
OC
and V
X
Units: 2
SC
X
in the specification table
0
X
= 0.125°C
LSb
X
SNS
not
t
SCD
in