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

4

ms

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

V

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

V

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

10

100

Years

Flash programming write

cycles

Data Flash

20000

Cycles

Instruction Flash

1000

Cycles

t(ROWPROG)

Row programming time

40

µs

t(MASSERASE)

Mass-erase time

TA = –40°C to 85°C

40

ms

t(PAGEERASE)

Page-erase time

TA = –40°C to 85°C

40

ms

IFLASHREAD

Flash read current

TA = –40°C to 85°C

1

mA

IFLASHWRTIE

Flash write current

TA = –40°C to 85°C

5

mA

IFLASHERASE

Flash erase current

TA = –40°C to 85°C

15

mA

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

V

VIL

Low-level input voltage low

VREG18 = 1.8 V

0.54

V

VOL

Low-level output voltage

IOL = 1 mA, VREG18 = 1.8 V

0.36

V

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BQ27Z561-R2

SLUSE22B – FEBRUARY 2020 – REVISED NOVEMBER 2022

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