M41T0 Просмотр технического описания (PDF) - Unspecified

Номер в каталоге

Компоненты Описание

Список матч

M41T0

Serial real-time clock

Unspecified 

M41T0

DC and AC parameters

Table 7.

Sym

DC characteristics

Parameter

Test condition(1)

Min

Typ

ILI Input leakage current

0V ≤ VIN ≤ VCC

ILO Output leakage current

0V ≤ VOUT ≤ VCC

3.0 V

35

ICC1 Supply current

Frequency (SCL) = 400 kHz

5.5 V

130

ICC2(2) Supply current (standby)

All inputs = VCC – 0.2 V

Frequency (SCL) = 0 Hz

3.0 V

5.5 V

0.9

VIL Input low voltage

VIH Input high voltage

Output low voltage

VOL Output low voltage

(open drain)

IOL = 3 mA

IOL = 10 mA

–0.3

0.7 VCC

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

2. At 25°C.

Max Unit

±1

µA

±1

µA

55

µA

200

µA

1.2

µA

31

µA

0.3 VCC V

VCC + 0.3 V

0.4

V

0.4

V

Table 8. Crystal electrical characteristics

Symbol

Parameter(1)(2)

Min

Typ

Max

Unit

fO

Resonant frequency

RS

Series resistance

32.768

kHz

60(3)

KΩ

CL

Load capacitance

12.5

pF

1. 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.

2. 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.

3. RS = 40 kΩ when VCC ≤ 2.5 V.

17/22

Share Link: