Operation Configuration B (Operation Config B) Register; External Pin Functions; Pin Function Code (Pfc) Descriptions - Texas Instruments BQ27220 Technical Reference Manual

Functional Description
BATG_POL = BAT_GD pin polarity control. Active-low is 0. Active-high is 1.
BATG_EN = Enables BATT_GD functionality
SLPWAKECHG = Accumulate estimated charge on wake from sleep when Current() > Sleep Current but not
Low Byte
BI_PUP_EN = Battery insertion pin pull up enable
PFC_CFG1, PFC_CFG0 = Pin function code (PFC) mode selection: PFC 0, 1, 2, or 3 selected by 00, 01, 10, or 11,
WAKE_EN,WK_TH1,WK_TH0 = These bits configure the current wake function. See the BQ27220 System-Side CEDV Fuel

4.1.3 Operation Configuration B (Operation Config B) Register

Bit 7
High Byte RSVD
0
Default
Low Byte INT_BREM
0
Default
High Byte
Default Seal = Seal during POR.
0 = No Seal after POR (default)
1 = Seal after POR
NR = Non Removable
Low Byte
INT_BREM = The GPOUT pulses 1 ms when the battery is removed and [BIEnable] = 1. Enabled when set.
INT_BATL = Enables toggle of the GPOUT pin upon TDA getting set
INT_STATE = Enables the SOC_INT function to pulse the GPOUT pin on current direction change
INT_OCV = Enables the SOC_INT function to generate a pulse due to OCV command
RSVD = Reserved
INT_OT = Enables the SOC_INT function to generate a pulse due to overtemperature conditions in conjunction with the assertion of
BatteryStatus()[OTC or OTD]
INT_POL = GPOUT pin polarity control. Active-low is 0. Active-high is 1.
INT_FOCV = The GPOUT pulses during the first measurement if this bit is set.

4.2 External Pin Functions

4.2.1 Pin Function Code (PFC) Descriptions

This fuel gauge has several pin-function configurations available for the end application. Each configuration is
assigned a pin function code, or PFC, specified by the Operation Config A [PFC_CFG1, PFC_CFG0] bits
46 BQ27220
RSVD = Reserved
SLEEP = The fuel gauge can enter SLEEP, if operating conditions allow. True when set.
enough to trigger wake event. Enabled when set.
WRTEMP = Enables the temperature write. The temperature is expected to be written by the host and is
used for gauging. Neither the external thermistor or internal temperature sensor is used. True
when set. (May not be fully implemented.)
BIEnable = When enabled, the fuel gauge detects battery insertion using the TS pin. If disabled, the
fuel gauge relies on the host to set and clear the BatteryStatus()[BATTPRES] bit using
BAT_INSERT() or BAT_REMOVE() subcommands. True when set.
RSVD = Reserved. Do not use.
respectively (see Section
Gauge Data Sheet (SLUSCB7) for threshold values.
Table 4-3. Operation Config B Register Bit Definitions
Bit 6 Bit 5
RSVD RSVD
0 0
INT_BATL INT_STATE
0 0
Copyright © 2022 Texas Instruments Incorporated
4.2.1, Pin Function Code (PFC) Descriptions).
Bit 4 Bit 3
Default
RSVD
Seal
1 0
0x10
INT_OCV RSVD
0 0
0x00
SLUUBD4A – APRIL 2016 – REVISED NOVEMBER 2022
Bit 2 Bit 1
NR RSVD
0 0
INT_OT INT_POL INT_FOCV
0 0
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Bit 0
RSVD
0
0