T1
Temperature()
Under Temp
TempRange() [UT]
=1
Low Temp
TempRange() [LT]
=1
Standard Temp
TempRange() [ST]
=1
High Temp
TempRange() [HT]
=1
Over Temp
TempRange() [OT]
=1
T2
T3
T4
Temperature()
>
Charge
Inhibit / Suspend Low Temp
+
Hysteresis Temp
Temperature()
<
Charge
Inhibit / Suspend Low Temp
Temperature()
>
Pre Charge
Temp
+
Hysteresis Temp
Temperature()
<
Pre Charge
Temp
Temperature()
>
Charge
Inhibit High Temp
+
Hysteresis Temp
Temperature()
>
Charge
Suspend High Temp
+
Hysteresis Temp
Temperature()
<
Charge
Inhibit High Temp
Temperature()
<
Charge
Suspend High Temp
Temperature Ranges
13
SLUUBD3D – September 2015 – Revised September 2018
Copyright © 2015–2018, Texas Instruments Incorporated
Basic Measurement System
Figure 2-1. Temperature Mode
7
6
5
4
3
2
1
0
RSVD
RSVD
RSVD
RSVD
RSVD
TSMode3
TSMode2
TSMode1
RSVD (Bits 7–3)
: Reserved
TSMode3 (Bit 2)
: Select TS3 sensor for Cell or FET Temperature Protection
0 = Use for Cell (default)
1 = Use for
FETTemperature()
TSMode2 (Bit 1)
: Select TS2 sensor for Cell or FET Temperature Protection
0 = Use for Cell (default)
1 = Use for
FETTemperature()
TSMode1 (Bit 0)
: Select TS1 sensor for Cell or FET Temperature Protection
0 = Use for Cell (default)
1 = Use for
FETTemperature()
2.5
Temperature Ranges
The measured temperature is segmented into several temperature ranges. The bq78350-R1 uses these
as indication, and, for Lifetime Data Logging, the time spent in each range. The temperature ranges set in
data flash should adhere to the following format:
T1
≤
T2
≤
T3
≤
T4
Figure 2-2. Data Flash Temperature Range Format
See the Temperature Ranges data flash subclass for details on the specific data flash variables.
2.6
Basic Configuration Options
There are a variety of options available in the bq78350-R1 and the companion AFE that influence the
startup conditions, system configuration, and the data measurement system.
2.6.1 DA Configuration
This register is used to configure the setup of various measurement features of the bq78350-R1.
Class
Subclass
Name
Format
Size in
Bytes
Min
Max
Default
Unit
Settings
Configuration
DA
Configuration
hex
1
0x00
0xFF
0x11
—