24

FN8211.1

November 11, 2005

Notes: 1.

The device goes into Standby: 200 ns after any STOP, except those that initiate a nonvolatile write cycle. It goes into Standby tWC after

a STOP that initiates a nonvolatile write cycle. It also goes into Standby 9 clock cycles after any START that is not followed by the cor-

rect Slave Address Byte.

2.

tWC is the time from a valid STOP condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It

is the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.

3.

For this range of V(VRef) the full scale sink mode current at I1 and I2 follows V(VRef) with a linearity error smaller than 1%.

4.

These parameters are periodically sampled and not 100% tested.

5.

TCOref = [Max V(VREF) - Min V(VREF)] x 106/(1.21V x 140°C)

VIHCMOS

WP, A0, A1, and A2 input

High voltage

0.8 x

Vcc

Vcc

V

VRefout

Output Voltage at VRef at

25°C

1.205

1.21

1.215

V

-20

A  I(VRef)  20 A

RVref

VRef pin input resistance

20

40

k



VRM bit = “1”, 25°C

TCOref

Temperature coefficient of

VRef output voltage

-100

+100

ppm/°

C

See note 4 and 5.

VRef Range

Voltage range when VRef

is an input

1

1.3

V

See note 3.

TSenseRange

Temperature sensor

range

-40

100

°C

See note 4.

IR

Current from pin R1 or R2

to Vss

0

1600

A

VPOR

Power-on reset threshold

voltage

1.5

2.8

V

VccRamp

Vcc Ramp Rate

0.2

50

mV /

s

VADCOK

ADC enable minimum

voltage

2.6

2.8

V

See Figure 8.

ELECTRICAL CHARACTERISTICS (CONTINUED)

All typical values are for 25°C ambient temperature and 5 V at pin Vcc. Maximum and minimum specifications are

over the recommended operating conditions. All voltages are referred to the voltage at pin Vss unless otherwise

specified. All bits in control registers are “0” unless otherwise specified. 510

, 0.1%, resistor connected between R1

and Vss, and another between R2 and Vss unless otherwise specified. 400kHz TTL input at SCL unless otherwise

specified. SDA pulled to Vcc through an external 2k

 resistor unless otherwise specified. 2-wire interface in “standby”

(see notes 1 and 2 on page 22), unless otherwise specified. WP, A0, A1, and A2 floating unless otherwise specified.

VRef pin unloaded, unless otherwise specified.

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions / Notes

X9530