DC and AC parameters

M41T00SC64

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Table 5. Capacitance and input parameters

Symbol

Test condition

Min

Max

Unit

Input capacitance (SCL)

13

pF

Input capacitance (SDA)

18

pF

Input Capacitance (Other pins)

6

pF

WC input impedance

50

200

k

Ω

WC input impedance

500

k

Ω

(3)

Output capacitance (SDA)

18

pF

Output capacitance (FT/OUT)

10

pF

1.

Effective capacitance measured with power supply at 5V; sampled, not 100% tested.

2.

At 25°C, f = 400kHz..

3.

Outputs deselected.

Table 6. DC characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Input leakage current

0V

±3

µA

Output leakage current

0V

±3

µA

Supply current

(serial RTC active)

Switch frequency = 400kHz

300

µA

Supply current

(serial EEPROM active)

(rise/fall time < 30ns)

2mA

Supply current (standby)

100

µA

Input low voltage

–0.3

V

Input high voltage

V

(2)

Output low voltage

0.4

V

Output voltage (open drain)(2)

0.4

V

(3)

Battery supply voltage

2.5

3

3.5

V

Battery supply current

0.6

1

µA

1.

2.

For FT/OUT pin (open drain)

3.

STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.