5/15

M41T00

Table 6. DC Characteristics

Note: 1. STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.

2. Switch-over and deselect point.

Table 8. Crystal Electrical Characteristics

(Externally Supplied)

Note: Load capacitors are integrated within the M41T00. Circuit board layout considerations for the 32.768kHz crystal of minimum trace

lengths and isolation from RF generating signals should be taken into account.

STMicroelectronics recommends the KDS DT-38 Tuning Fork Type quartz crystal for industrial temperature operations.

KDS can be contacted at 913-491-6825 or http://www.kdsj.co.jp for further information on this crystal type.

Symbol

Parameter

Test Condition

Min

Typ

Max

Unit

Input Leakage Current

0V

±1

µA

Output Leakage Current

0V

±1

µA

Supply Current

Switch Frequency = 100kHz

300

µA

Supply Current (Standby)

70

µA

Input Low Voltage

–0.3

V

Input High Voltage

V

Output Low Voltage

0.4

V

(1)

Battery Supply Voltage

2

3

3.5

V

Battery Supply Current

0.8

1

µA

Symbol

Parameter

Min

Typ

Max

Unit

(2)

Battery Back-up Switchover Voltage

V

Symbol

Parameter

Min

Typ

Max

Unit

Resonant Frequency

32.768

kHz

Series Resistance

35

k

Ω

Load Capacitance

12.5

pF