DC and AC parameters

M41T56C64

12/19

Table 5. Capacitance and input parameters

Symbol

1.

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

2.

At 25°C, f = 400kHz..

Test

condition

Min

Max

Unit

Input capacitance (SCL)

13

pF

Input capacitance (SDA)

18

pF

Input Capacitance (Other pins)

6

pF

WC input impedance

5

20

k

Ω

WC input impedance

500

k

Ω

(3)

3.

Outputs deselected.

Output capacitance (SDA)

18

pF

Output capacitance (FT/OUT)

10

pF

Table 6. DC characteristics

Symbol

Parameter

1.

Min

Typ

Max

Unit

Input leakage current

0V

≤V

±3

µA

Output leakage current

0V

≤V

±3

µA

Supply current

(Serial RTC active)

Switch frequency =

100kHz

310

µA

Supply current

(Serial EEPROM active)

(rise/fall time < 30ns)

2.2

mA

Supply current (standby)

100

µA

Input low voltage (SCL, SDA)

–0.3

1.5

V

Input low voltage (E2, E1, E0)

–0.45

V

Input low voltage (WC)

–0.45

0.5

V

Input high voltage (SCL, SDA)

3

V

Input high voltage

(E2, E1, E1, WC)

V

Output low voltage

0.4

V

(2)

2.

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

Battery supply voltage

2.5

3

3.5

V

Battery supply current

450

550

nA