M41T60 datasheet(16/23 Pages) STMICROELECTRONICS

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M41T60

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Table 7. DC Characteristics

Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 1.3 to 3.6V (except where noted).

2. Oscillator start-up guaranteed at 1.5V only.

3. When using battery back-up, VCC fall time should not exceed 10mV/µs.

Table 8. Crystal Electrical Characteristics

Note: 1. These values are externally supplied. STMicroelectronics recommends the Citizen CFS-145 (1.5x5mm) and the KDS DT-38

(3x8mm) for thru-hole, or the KDS DMX-26S (3.2x8mm) for surface-mount, tuning fork-type quartz crystals.

KDS can be contacted at kouhou@kdsj.co.jp or http://www.kdsj.co.jp.

Citizen can be contacted at csd@citizen-america.com or http://www.citizencrystal.com.

2. Load capacitors are integrated within the M41T60. Circuit board layout considerations for the 32.768KHz crystal of minimum trace

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

3. Guaranteed by design.

Sym

Parameter

Test Condition(1)

Min

Typ

Max

Unit

VCC

(3)

Operating Voltage

Clock(2)

1.0

3.6

I2C Bus (400kHz)

1.3

3.6

ICC1

Supply Current

SCL = 400kHz

(No Load)

VCC = 3.6V

100

µA

VCC = 3.0V

µA

VCC = 2.5V

µA

VCC = 2.0V

µA

ICC2

Supply Current

(Standby)

SCL = 0Hz

All inputs

≥ VCC – 0.2V

≤ VSS + 0.2V

3.6V

375

700

3.0V @ 25°C

350

2.0V @ 25°C

310

VIL

Input Low Voltage

–0.2

0.3 VCC

VIH

Input High Voltage

0.7 VCC

VCC + 0.3

VOL

Output Low Voltage

VCC = 3.6V, IOL = 3mA (SDA)

0.4

VCC = 3.6V, IOL = 1mA (OFIRQ/OUT)

0.4

Pull-up Supply

Voltage (Open Drain)

FT, OFIRQ/OUT

3.6V

ILI

Input Leakage

Current

≤ VIN ≤ VCC

–1.0

+1.0

µA

ILO

Output Leakage

Current

≤ VOUT ≤ VCC

–1.0

+1.0

µA

Symbol

Parameter(1,2)

Min

Typ

Max

Unit

Resonant Frequency

32.768

kHz

Series Resistance

65(3)

Ω

Load Capacitance

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