M41ST85 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

M41ST85

3.0/3.3V I²C combination serial RTC, NVRAM supervisor and microprocessor supervisor

STMicroelectronics 

DC and AC parameters

5

DC and AC parameters

M41ST85W

Note:

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 9.

DC and AC measurement conditions

Parameter

VCC Supply Voltage

Ambient Operating Temperature

Load Capacitance (CL)

Input Rise and Fall Times

Input Pulse Voltages

Input and Output Timing Ref. Voltages

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

M41ST85W

2.7 to 3.6V

–40 to 85°C

50pF

≤ 50ns

0.2 to 0.8VCC

0.3 to 0.7VCC

Figure 18. AC testing input/output waveforms

0.8VCC

0.2VCC

0.7VCC

0.3VCC

AI02568

Table 10. Capacitance

Symbol

Parameter(1)(2)

Min

Max

CIN

Input Capacitance

7

COUT(3) Output Capacitance

10

tLP

Low-pass filter input time constant (SDA and

SCL)

50

1. Effective capacitance measured with power supply at 5V. Sampled only, not 100% tested.

2. At 25°C, f = 1MHz.

3. Outputs are deselected.

Unit

pF

pF

ns

30/41

Share Link: