Data Flash Characteristics Over Recommended Operating Temperature and Supply Voltage

SMBus Timing Characteristics

bq20z75

Electrical Characteristics (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

–3%

0.25%

3%

–2%

0.25%

2%

2.5

5

ms

LOW FREQUENCY OSCILLATOR

Operating frequency

32.768

kHz

–2.5%

0.25%

2.5%

–1.5%

0.25%

1.5%

500

µs

(12) The frequency error is measured from 4.194 MHz.

(14) The startup time is defined as the time it takes for the oscillator output frequency to be ±3%

(15) The frequency error is measured from 32.768 kHz.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Data retention

10

Years

Flash programming write-cycles

20k

Cycles

Row programming time

2

ms

200

ms

20

ms

Flash-write supply current

5

10

mA

Flash-erase supply current

5

10

mA

RAM BACKUP

1000

2500

RB data-retention input current

nA

90

220

1.7

V

(1)

Assured by design. Not production tested.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SMBus operating frequency

Slave mode, SMBC 50% duty cycle

10

100

kHz

SMBus master clock frequency

Master mode, No clock low slave

51.2

kHz

extend

Bus free time between start and stop

4.7

µs

(see Figure 1)

Hold time after (repeated) start (see Figure 1)

4.0

µs

Repeated start setup time (see Figure 1)

4.7

µs

Stop setup time (see Figure 1)

4.0

µs

Receive mode

0

ns

Data hold time (see Figure 1)

Transmit mode

300

Data setup time (see Figure 1)

250

ns

Copyright © 2007–2008, Texas Instruments Incorporated

Submit Documentation Feedback

9

Product Folder Link(s): bq20z75