M41T00M datasheet(5/15 Pages) STMICROELECTRONICS

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M41T00

Table 6. DC Characteristics

(TA = –40 to 85°C; VCC = 2.0V to 5.5V)

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

Table 7. Power Down/Up Trip Points DC Characteristics (1)

(TA = –40 to 85°C)

Note: 1. All voltages referenced to VSS.

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

ILI

Input Leakage Current

≤ VIN ≤ VCC

±1

µA

ILO

Output Leakage Current

≤ VOUT ≤ VCC

±1

µA

ICC1

Supply Current

Switch Frequency = 100kHz

300

µA

ICC2

Supply Current (Standby)

SCL, SDA = VCC – 0.3V

µA

VIL

Input Low Voltage

–0.3

0.3 VCC

VIH

Input High Voltage

0.7 VCC

VCC + 0.8

VOL

Output Low Voltage

IOL = 3mA

0.4

VBAT

(1)

Battery Supply Voltage

3.5

IBAT

Battery Supply Current

TA = 25°C, VCC = 0V,

Oscillator ON, VBAT = 3V

0.8

µA

Symbol

Parameter

Min

Typ

Max

Unit

VSO

(2)

Battery Back-up Switchover Voltage

VBAT – 0.70

VBAT – 0.50

VBAT – 0.30

Symbol

Parameter

Min

Typ

Max

Unit

Resonant Frequency

32.768

kHz

Series Resistance

Ω

Load Capacitance

12.5

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