M41T66 datasheet(25/33 Pages) STMICROELECTRONICS

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M41T66

DC and AC parameters

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Table 9.

Capacitance

Symbol

Parameter(1)(2)

Min

Max

Unit

CIN

Input capacitance

COUT

(3)

Output capacitance

tLP

Low-pass filter input time constant (SDA and SCL)

Effective capacitance measured with power supply at 3.6 V; sampled only, not 100% tested.

At 25°C, f = 1 MHz.

Outputs deselected.

Table 10.

DC characteristics

Sym

Parameter

Test condition(1)

Min

Typ

Max

Unit

VCC

(2)

Operating voltage

Clock

0°C to 85°C

1.0

4.4

–20°C to 85°C

1.3

4.4

–40°C to 85°C

1.5

4.4

I2C bus (400 kHz)

1.3

4.4

ICC1

Supply current

SCL = 400 kHz

(no load)

4.4 V

100

µA

3.6 V

µA

3.0 V

µA

2.5 V

µA

2.0 V

µA

ICC2

Supply current (standby)

SCL = 0 Hz

all inputs

≥ VCC – 0.2 V

≤ VSS + 0.2 V

SQW off

4.4 V

1100

3.6 V

550

900

3.0 V at 25°C

525

1.8 V at 25°C

450

VIL

Input low voltage

–0.2

0.3 VCC

VIH

Input high voltage

0.7VCC

VCC+0.3

VOL

Output low voltage

VCC = 4.4 V, IOL = 1.0 mA

(SQW, IRQ/OUT)

0.4

VPU

Pull-up supply voltage

(open drain)

IRQ/OUT

4.4

SQW

VCC

ILI

Input leakage current

≤ VIN ≤ VCC

±1

µA

ILO

Output leakage current

≤ VOUT ≤ VCC

±1

µA

Square wave duty cycle(3)

No load

Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 1.5 V to 4.4 V (except where noted).

Oscillator startup guaranteed at 1.6 V only at 25°C.

Guaranteed by design.

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