M41T0 datasheet(17/22 Pages) STMICROELECTRONICS

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M41T0

DC and AC parameters

17/22

Table 7.

DC characteristics

Sym

Parameter

Test condition(1)

Min

Typ

Max

Unit

ILI

Input leakage current

≤ VIN ≤ VCC

±1

µA

ILO

Output leakage current

≤ VOUT ≤ VCC

±1

µA

ICC1

Supply current

Frequency (SCL) = 400 kHz

3.0 V

µA

5.5 V

130

200

µA

ICC2

(2) Supply current (standby)

All inputs = VCC – 0.2 V

Frequency (SCL) = 0 Hz

3.0 V

0.9

1.2

µA

5.5 V

µA

VIL

Input low voltage

–0.3

0.3 VCC

VIH

Input high voltage

0.7 VCC

VCC + 0.3

VOL

Output low voltage

IOL = 3 mA

0.4

Output low voltage

(open drain)

IOL = 10 mA

0.4

Valid for ambient operating temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5 V (except where noted).

At 25°C.

Table 8.

Crystal electrical characteristics

Symbol

Parameter(1)(2)

Min

Typ

Max

Unit

Resonant frequency

32.768

kHz

Series resistance

60(3)

Load capacitance

12.5

These values are externally supplied. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning Fork

Type (thru-hole) or the DMX-26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations. KDS can

be contacted at kouhou@kdsj.co.jp or http://www.kdsj.co.jp for further information on this crystal type.

Load capacitors are integrated within the M41T0. Circuit board layout considerations for the 32.768 kHz crystal of minimum

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

RS = 40 kΩ when VCC ≤ 2.5 V.

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