Datasheet

bq20z65-R1
www.ti.com SLUS990 –DECEMBER 2009
COMMUNICATIONS
The bq20z65-R1 uses SMBus v1.1 with Master Mode and package error checking (PEC) options per the SBS
specification.
SMBus On and Off State
The bq20z65-R1 detects an SMBus off state when SMBC and SMBD are logic-low for ≥ 2 seconds. Clearing this
state requires either SMBC or SMBD to transition high. Within 1 ms, the communication bus is available.
SBS Commands
Table 3. SBS COMMANDS
SBS SIZE IN MIN MAX
DEFAULT
MODE NAME FORMAT UNIT
VALUE
CMD BYTES VALUE VALUE
0x00 R/W ManufacturerAccess Hex 2 0x0000 0xffff — —
0x01 R/W RemainingCapacityAlarm Integer 2 0 700 or 1000 300 or 432 mAh or 10mWh
0x02 R/W RemainingTimeAlarm Unsigned 2 0 30 10 min
integer
0x03 R/W BatteryMode Hex 2 0x0000 0xffff — —
0x04 R/W AtRate Integer 2 –32,768 32,767 — mA or 10mW
0x05 R AtRateTimeToFull Unsigned 2 0 65,535 — min
integer
0x06 R AtRateTimeToEmpty Unsigned 2 0 65,535 — min
integer
0x07 R AtRateOK Unsigned 2 0 65,535 — —
integer
0x08 R Temperature Unsigned 2 0 65,535 — 0.1°K
integer
0x09 R Voltage Unsigned 2 0 20,000 — mV
integer
0x0a R Current Integer 2 –32,768 32767 — mA
0x0b R AverageCurrent Integer 2 –32,768 32,767 — mA
0x0c R MaxError Unsigned 1 0 100 — %
integer
0x0d R RelativeStateOfCharge Unsigned 1 0 100 — %
integer
0x0e R AbsoluteStateOfCharge Unsigned 1 0 100+ — %
integer
0x0f R/W RemainingCapacity Unsigned 2 0 65,535 — mAh or 10mWh
integer
0x10 R FullChargeCapacity Unsigned 2 0 65,535 — mAh or 10mWh
integer
0x11 R RunTimeToEmpty Unsigned 2 0 65,534 — min
integer
0x12 R AverageTimeToEmpty Unsigned 2 0 65,534 — min
integer
0x13 R AverageTimeToFull Unsigned 2 0 65,534 — min
integer
0x14 R ChargingCurrent Unsigned 2 0 65,534 — mA
integer
0x15 R ChargingVoltage Unsigned 2 0 65,534 — mV
integer
0x16 R BatteryStatus Hex 2 0x0000 0xdbff — —
0x17 R/W CycleCount Unsigned 2 0 65,535 0 —
integer
0x18 R/W DesignCapacity Integer 2 0 32,767 4400 or 6336 mAh or 10mWh
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