BQ2060SS Datasheet, PDF (38/59 Pages) Texas Instruments – SBS V1.1-COMPLIANT GAS GAUGE IC

bq2060
SLUS035E – JANUARY 2000 – REVISED OCTOBER 2005
www.ti.com
CVUV
The CVUV bit indicates if any individual cell falls below the programmed low-voltage limit. The bit
applies to lithium batteries only. The bit is not latched and merely reflects the present undervoltage
status.
0
All series cells are above the low-voltage limit
1
A series cell is below the low-voltage limit
VCELL4–VCELL1 (0x3c–0x3f); [0x3c–0x3f]
DESCRIPTION
These functions return the calculated voltages in mV at the VCELL₄ through VCELL₁ inputs.
EEPROM
GENERAL
The bq2060 accesses the external EEPROM during a full reset and when storing historical data. During an
EEPROM access, the VOUT pin becomes active and the bq2060 uses the ESCL and ESDA pins to
communicate with the EEPROM. The EEPROM stores basic configuration information for use by the bq2060.
The EEPROM must be programmed correctly for proper bq2060 operation.
MEMORY MAP
Table 10 shows the memory map for the EEPROM. It also contains example data for a 10 series NiMH and a
3s3p Li-ion battery pack with a 0.05-Ω sense resistor.
EEPROM
ADDRESS
0x00 0x01
0x02 0x03
0x04 0x05
0x06
0x07
0x08 0x09
0x0a 0x0b
0x0c 0x0d
0x0e 0x0f
0x10 0x11
0x12 0x13
0x14 0x15
0x16 0x17
0x18 0x19
0x1a 0x1b
0x1c 0x1d
0x1e 0x1f
0x20
0x21
0x22
0x23
Table 10. EEPROM Memory Map
NAME ⁽¹⁾
CHEMISTRY
NIMH
EXAMPLE
DATA
MSB LSB
Check Byte 1
Li-ion, Nickel
15487
3c
7f
Remaining Time Alarm
Li-ion, Nickel 10 minutes 00
0a
Remaining Capacity Alarm
Li-ion, Nickel 350 mAh
01
5e
EDV A0 Impedance Age Factor Li-ion, Nickel
0
-
00
Reserved
-
0
-
00
Reserved
-
0
00
00
Charging Voltage
Li-ion, Nickel 18000 mV
46
50
Reserved
-
128
00
80
Cycle Count
Li-ion, Nickel
0
00
00
Reserved
-
0
00
00
Design Voltage
Li-ion, Nickel 12000 mV
2e
e0
Specification Information
Li-ion, Nickel v1.1/PEC
00
31
Manufacture Date
Li-ion, Nickel 2/25/99=9817 26
59
Serial Number
Li-ion, Nickel
1
00
01
Fast-Charging Current
Li-ion, Nickel 4000mA
0f
a0
Maintenance Charging Current Li-ion, Nickel 200mA
00
c8
Pre-Charge Current
Li-ion, Nickel 800mA
03
20
Manufacturer Name Length
Li-ion, Nickel
9
-
09
Character 1
Li-ion, Nickel
B
-
42
Character 2
Li-ion, Nickel
E
-
45
Character 3
Li-ion, Nickel
N
-
4E
Li-ion
EXAMPLE
15487
10 minutes
400 mAh
0
0
0
12600 mV
128
0
0
10800 mV
v1.1/PEC
2/25/99=9817
1
3000 mA
0 mA
100 mA
9
B
E
N
DATA
MSB LSB
3c
7f
00
0a
01
90
-
00
-
00
00
00
31
38
00
80
00
00
00
00
2a
30
00
31
26
59
00
01
0b
b8
00
00
00
64
-
09
-
42
-
45
-
4e
(1) Reserved locations must be set as shown. Locations marked with an * are calibration values that can be for maximum accuracy. For
these locations the table shows the appropriate default or initial setting.
38