BQ7693003DBT datasheet(35/63 Pages) TI1

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SLUSBK2F – OCTOBER 2013 – REVISED NOVEMBER 2015

LOAD_PRESENT (Bit 7): Valid only when [CHG_ON] = 0. Is high if CHG pin is detected to exceed

VLOAD_DETECT while CHG_ON = 0, which suggests that external load is present. Note this bit is read-

only and automatically clears when load is removed.

0 = CHG pin < VLOAD_DETECT or [CHG_ON] = 1.

1 = CHG pin >VLOAD_DETECT, while [CHG_ON] = 0.

ADC_EN (Bit 4): ADC enable command

0 = Disable voltage and temperature ADC readings (also disables OV protection)

1 = Enable voltage and temperature ADC readings (also enables OV protection)

TEMP_SEL (Bit 3): TSx_HI and TSx_LO temperature source

0 = Store internal die temperature voltage reading in TSx_HI and TSx_LO

1 = Store thermistor reading in TSx_HI and TSx_LO (all thermistor ports)

RSVD (Bit 2): Reserved, do not set to 1.

SHUT_A, SHUT_B (Bits 1–0): Shutdown command from host microcontroller. Must be written in a

specific sequence, shown below:

Starting from: [SHUT_A] = 0, [SHUT_B] = 0

Write #1: [SHUT_A] = 0, [SHUT_B] = 1

Write #2: [SHUT_A] = 1, [SHUT_B] = 0

Other writes cause the command to be ignored.

Table 7-8. SYS_CTRL2 (0x05)

BIT

NAME

DELAY_DIS

CC_EN

CC_

RSVD

DSG_ON

CHG_ON

ONESHOT

RESET

ACCESS

DELAY_DIS (Bit 7): Disable OV, UV, OCD, and SCD delays for faster customer production testing.

0 = Normal delay settings

1 = OV, UV, OCD, and SCD delay circuit is bypassed, creating zero delay (approximately

250 ms).

CC_EN (Bit 6): Coulomb counter continuous operation enable command. If set high, [CC_ONESHOT] bit

is ignored.

0 = Disable CC continuous readings

1 = Enable CC continuous readings and ignore [CC_ONESHOT] state

CC_ONESHOT (Bit 5): Coulomb counter single 250-ms reading trigger command. If set to 1, the

coulomb counter will be activated for a single 250-ms reading, and then turned back off.

[CC_ONESHOT] will also be cleared at the conclusion of this reading, while [CC_READY] bit will be set

to 1.

0 = No action

1 = Enable single CC reading (only valid if [CC_EN] = 0), and [CC_READY] = 0)

RSVD (Bit 4–2): Reserved. Do not use.

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