參數(shù)資料
型號(hào)： bq2092
廠商： Benchmark Technology Group
英文描述： Gas Gauge IC with SMBus-Like Interface(Gas Gauge芯片（帶SMBus 接口）)
中文描述： 氣體計(jì)IC一樣，帶有SMBus接口（電量監(jiān)測(cè)計(jì)芯片（帶的SMBus接口））
文件頁數(shù)： 17/28頁
文件大?。?/td> 213K
代理商： BQ2092
WRINH should be set at the time of pack assembly and
tested to prevent special read-write registers from acci-
dental over-writing.
The
Valid Discharge
flag (VDQ), bit 3, is set when a
valid discharge is occurring (discharge cycle valid for
learning new full charge capacity) and cleared if a
partial charge is detected, EDV1 is asserted when T <
0°C, or self-discharge accounts for more than 256mAh of
the discharge.
The VDQ values are:
Where VDQ is:
0
Self-discharge is greater than 256mAh,
EDV1 = 1 when T < 0°C or VQ = 1
1
On first discharge after RM=FCC
The
Stop EDV
flag (SEDV), bit 2, is set when the
discharge current > 6.15A and cleared when the
discharge current falls below 6.15A.
The SEDV values are:
Where SEDV is:
0
Current < 6.15A
1
Current > 6.15A
The
First End-of-Discharge Voltage
flag (EDV1), bit 1, is
set when Voltage < EDV1 = 1 if SEDV = 0 and cleared
when VQ = 1 and Voltage > EDV1.
The EDV1 values are:
Where EDV1 is:
0
VQ = 1 and Voltage > EDV1
1
Voltage < EDV1 and SEDV = 0
The
Final End-of-Discharge Voltage
flag (EDVF), bit 0, is
set when Voltage < EDVF = 1 if SEDV = 0 and cleared
when VQ = 1 and Voltage() > EDVF.
The EDVF values are:
Where EDVF is:
0
VQ = 1 and Voltage > EDVF
1
Voltage < EDVF and SEDV = 0
Software Reset
The bq2092 can be reset over the serial port by confirm-
ing that the WRINH bit is set to zero in FLAGS1, writ-
ing MaxError (0x0c) to any value other than 2, and writ-
ing the reset register (0x44) to 8009, causing the bq2092
to reinitialize and read the default values from the
external EEPROM.
Error Codes and Status Bits
Error codes and status bits are listed in Table 7 and
Table 8,respectively.
Programming the bq2092
The bq2092 requires the proper programming of an
external EEPROM for proper device operation.
module can be calibrated for the greatest accuracy, or
general “default” values can be used. A programming
kit (interface board, software, and cable) for an IBM-
compatible PC is available from Unitrode.
contact Unitrode for further details
Each
Please
The bq2092 uses a 24LC01 or equivalent serial
EEPROM for storing the various initial values, calibra-
tion data, and string information. Table 1 outlines the
parameters and addresses for this information. Tables 9
and 10 detail the various register contents and show an
example program value for an 1800mAh NiMH battery
pack,using a 50m
sense resistor.
17
bq2092
FLAGS1 Bits
4
-
7
-
6
-
5
-
3
-
2
1
-
0
-
SEDV
FLAGS1 Bits
4
-
7
-
6
-
5
-
3
-
2
-
1
0
-
EDV1
FLAGS1 Bits
4
-
7
-
6
-
5
-
3
2
-
1
-
0
-
VDQ
FLAGS1 Bits
4
-
7
-
6
-
5
-
3
-
2
-
1
-
0
EDVF
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參數(shù)描述
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