Texas Instruments bq78350-R1 Technical Reference

Calibration www.ti.com
78
SLUUBD3D–September 2015–Revised September 2018
Submit Documentation Feedback
Copyright © 2015–2018, Texas Instruments Incorporated
Manufacture Production
LF_EN (Bit 5): Lifetime Data Collection
1 = Enabled
0 = Disabled (default)
FET_EN (Bit 4): FET action
1 = Enabled
0 = Disabled (default)
RSVD (Bits 3–0): Reserved. Do not use.
12.2 Calibration
The bq78350-R1 device has integrated routines that support calibration of current, voltage, and
temperature readings, accessible after writing 0xF081 or 0xF082 to ManufacturerAccess() when the
ManufacturingStatus()[CAL] bit is ON. While the calibration is active, the factory calibrated ADC data is
available on ManufacturerData(). The device stops reporting calibration data on ManufacturerData() if any
other MAC commands are sent or the device is reset or sealed.
NOTE: The ManufacturingStatus()[CAL] bit must be turned OFF after calibration is completed. This
bit is cleared at reset or after sealing.
ManufacturerAccess() Description
0x002D Enables/Disables ManufacturingStatus()[CAL]
0xF080 Disables raw ADC data output on ManufacturerData()
0xF081 Outputs factory calibrated ADC data of the first 14-series cell voltages on ManufacturerData()
0xF082
Outputs factory calibrated ADC data of Cell Voltage 15, external average voltage, VAUX
voltage, current, and temperatures on ManufacturerData()
For 0xF081, the ManufacturerData() output format is:
ZZYYaaAAbbBBccCCddDDeeEEffFFggGGhhHHiiIIjjJJkkKKllLLmmMMnnNNooOO, where:
Value Format Description
ZZ Byte
8-bit counter, increments when raw ADC values are refreshed
(every 250 ms)
YY Byte
Output Status
ManufacturerAccess() = 0xF081: 1
ManufacturerAccess() = 0xF082: 2
AAaa 2's comp AFE CELL Map
BBbb 2's comp Cell Voltage 1
CCcc 2's comp Cell Voltage 2
DDdd 2's comp Cell Voltage 3
EEee 2's comp Cell Voltage 4
FFff 2's comp Cell Voltage 5
GGgg 2's comp Cell Voltage 6
HHhh 2's comp Cell Voltage 7
IIii 2's comp Cell Voltage 8
JJjj 2's comp Cell Voltage 9
KKkk 2's comp Cell Voltage 10
LLll 2's comp Cell Voltage 11
MMmm 2's comp Cell Voltage 12
NNnn 2's comp Cell Voltage 13
OOoo 2's comp Cell Voltage 14

Texas Instruments bq78350-R1 Specifications

General

Brand	Texas Instruments
Model	bq78350-R1
Category	Controller
Language	English