Texas Instruments BQ769142, Manual

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Table 6-1. BQ769142 TQFP Package (PFB) Pin Functions (continued)
PIN
I/O TYPE DESCRIPTION
NO. NAME
7 VC9 I IA
Sense voltage input pin for the ninth cell from the bottom of the stack, balance current
input for the ninth cell from the bottom of the stack, and return balance current for the
tenth cell from the bottom of the stack
8 VC8 I IA
Sense voltage input pin for the eighth cell from the bottom of the stack, balance
current input for the eighth cell from the bottom of the stack, and return balance
current for the ninth cell from the bottom of the stack
9 VC7 I IA
Sense voltage input pin for the seventh cell from the bottom of the stack, balance
current input for the seventh cell from the bottom of the stack, and return balance
current for the eighth cell from the bottom of the stack
10 VC6 I IA
Sense voltage input pin for the sixth cell from the bottom of the stack, balance current
input for the sixth cell from the bottom of the stack, and return balance current for the
seventh cell from the bottom of the stack
11 VC5 I IA
Sense voltage input pin for the fifth cell from the bottom of the stack, balance current
input for the fifth cell from the bottom of the stack, and return balance current for the
sixth cell from the bottom of the stack
12 VC4 I IA
Sense voltage input pin for the fourth cell from the bottom of the stack, balance
current input for the fourth cell from the bottom of the stack, and return balance
current for the fifth cell from the bottom of the stack
13 VC3 I IA
Sense voltage input pin for the third cell from the bottom of the stack, balance current
input for the third cell from the bottom of the stack, and return balance current for the
fourth cell from the bottom of the stack
14 VC2 I IA
Sense voltage input pin for the second cell from the bottom of the stack, balance
current input for the second cell from the bottom of the stack, and return balance
current for the third cell from the bottom of the stack
15 VC1 I IA
Sense voltage input pin for the first cell from the bottom of the stack, balance current
input for the first cell from the bottom of the stack, and return balance current for the
second cell from the bottom of the stack
16 VC0 I IA
Sense voltage input pin for the negative terminal of the first cell from the bottom of the
stack, and return balance current for the first cell from the bottom of the stack
17 VSS — P Device ground
18 SRP I IA
Analog input pin connected to the internal coulomb counter peripheral for integrating
a small voltage between SRP and SRN, where SRP is the top of the sense resistor. A
charging current generates a positive voltage at SRP relative to SRN.
19 NC — — This pin is not connected to silicon.
20 SRN I IA
Analog input pin connected to the internal coulomb counter peripheral for integrating
a small voltage between SRP and SRN, where SRN is the bottom of the sense
resistor. A charging current generates a positive voltage at SRP relative to SRN.
21 TS1 I/O OD, I/OA Thermistor input, or general purpose ADC input
22 TS2 I/O OD, I/OA
Thermistor input and functions as wakeup from SHUTDOWN, or general purpose
ADC input
23 TS3 I/O OD, I/OA Thermistor input, or general purpose ADC input
24 REG18 O P Internal 1.8-V LDO output (only for internal use)
25 ALERT I/O I/OD, I/OA
Multifunction pin, can be ALERT output, or HDQ I/O, or thermistor input, or general
purpose ADC input, or general purpose digital output
26 SCL I/O I/OD Multifunction pin, can be SCL or SPI_SCLK
27 SDA I/O I/OD Multifunction pin, can be SDA or SPI_MISO
28 HDQ I/O I/OD, I/OA
Multifunction pin, can be HDQ I/O, SPI_MOSI, thermistor input, general purpose ADC
input, or general purpose digital output
29 CFETOFF I/O I/OD, I/OA
Multifunction pin, can be CFETOFF, SPI_CS, thermistor input, general purpose ADC
input, or general purpose digital output
30 DFETOFF I/O I/OD, I/OA
Multifunction pin, can be DFETOFF, BOTHOFF, thermistor input, general purpose
ADC input, or general purpose digital output
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BQ769142
SLUSE91A – SEPTEMBER 2020 – REVISED FEBRUARY 2021
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