BQ27Z561-R1 datasheet(7/27 Pages) TI2

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7.13 Internal Oscillator Specifications

Unless otherwise noted, characteristics noted under conditions of TA = –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

High Frequency Oscillator (HFO)

fHFO

Operating frequency

16.78

MHz

fHFO

HFO frequency drift

TA = –20°C to 70°C

–2.5%

2.5%

TA = –40°C to 85°C

–3.5

3.5

tHFOSTART

HFO start-up time

TA = –40°C to 85°C, oscillator

frequency within +/– 3% of nominal

frequency or a power-on reset

Low Frequency Oscillator (LFO)

fLFO

Operating frequency

65.536

kHz

fLFO(ERR)

Frequency error

TA = –40°C to 85°C

–2.5%

+2.5%

7.14 Voltage Reference1 (REF1)

Unless otherwise noted, characteristics noted under conditions of TA = –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VREF1

Internal reference voltage(1)

1.195

1.21

1.227

VREF1_DRIFT

Internal reference voltage drift TA = –40 °C to 85°C

–80

+80

PPM/C

(1)

Used for CC and LDO

7.15 Voltage Reference2 (REF2)

Unless otherwise noted, characteristics noted under conditions of TA = –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VREF2

Internal reference voltage(1)

1.2

1.21

1.22

VREF2_DRIFT

Internal reference voltage drift TA = –40 °C to 85°C

–20

20 PPM/°C

(1)

Used for ADC

7.16 Flash Memory

Unless otherwise noted, characteristics noted under conditions of TA = –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Data retention

100

Years

Flash programming write

cycles

Data Flash

20000

Cycles

Instruction Flash

1000

Cycles

t(ROWPROG)

Row programming time

µs

t(MASSERASE)

Mass-erase time

TA = –40°C to 85°C

t(PAGEERASE)

Page-erase time

TA = –40°C to 85°C

IFLASHREAD

Flash read current

TA = –40°C to 85°C

IFLASHWRTIE

Flash write current

TA = –40°C to 85°C

IFLASHERASE

Flash erase current

TA = –40°C to 85°C

7.17 I2C I/O

Unless otherwise noted, characteristics noted under conditions of TA = –40℃ to 85℃

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIH

High-level input voltage

SCL, SDA/HDQ, VREG18 = 1.8 V

1.26

VIL

Low-level input voltage low

VREG18 = 1.8 V

0.54

VOL

Low-level output voltage

IOL = 1 mA, VREG18 = 1.8 V

0.36

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BQ27Z561-R1

SLUSDH5B – MARCH 2019 – REVISED DECEMBER 2022

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