M41T62 datasheet(23/42 Pages) STMICROELECTRONICS

Nome de Peças	M41T62

Descrição Electrónicos	Low-power serial real-time clocks (RTCs) with alarm

PDF	42 Pages

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Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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DC and AC parameters

This section summarizes the operating and measurement conditions, as well as the DC and AC characteristics of

the device. The parameters in the following DC and AC characteristic tables are derived from tests performed

under the measurement conditions listed in the relevant tables. Designers should check that the operating

conditions in their projects match the measurement conditions when using the quoted parameters.

Table 11. Operating and AC measurement conditions

Parameter

M41T6x

Supply voltage (VCC)

1.3 V to 4.4 V

Ambient operating temperature (TA)

–40 to 85 °C

Load capacitance (CL)

50 pF

Input rise and fall times

≤ 5 ns

Input pulse voltages

0.2 VCC to 0.8 VCC

Input and output timing ref. voltages

0.3 VCC to 0.7 VCC

Note:

Output Hi-Z is defined as the point where data is no longer driven.

Figure 22. AC measurement I/O waveform

0.8VCC

0.2VCC

0.7VCC

0.3VCC

Figure 23. Crystal isolation example

Crystal

GND

Local Grounding Plane

(Layer 2)

Note:

Substrate pad should be tied to VSS.

M41T62, M41T64, M41T65

DC and AC parameters

DS3840 - Rev 24

page 23/42

M41T62 Folha de dados(PDF) 23 Page - STMicroelectronics