M41T81M6F STMicroelectronics, M41T81M6F Datasheet - Page 21

• Manufacturer Part Number: M41T81M6F
• Description: IC RTC SERIAL W/ALARM 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T81M6F

• Memory Size: 20B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4709-2

M41T81
5
Note:
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 7.
Output Hi-Z is defined as the point where data is no longer driven.
Figure 14. AC measurement I/O waveform
Table 8.
1. Effective capacitance measured with power supply at 5 V; sampled only, not 100% tested.
2. At 25°C, f = 1 MHz.
3. Outputs deselected.
Supply voltage (V
Ambient operating temperature (T
Load capacitance (C
Input rise and fall times
Input pulse voltages
Input and output timing ref. voltages
Symbol
C
OUT
C
t
LP
IN
(3)
Operating and AC measurement conditions
Capacitance
CC
Input capacitance
Output capacitance
Low-pass filter input time constant (SDA and SCL)
)
L
)
0.8V CC
0.2V CC
Parameter
Doc ID 7529 Rev 10
A
)
Parameter
(1)(2)
0.7V CC
0.3V CC
DC and AC parameters
0.2V
0.3V
Min
-
-
-
–40 to 85°C
2.0 to 5.5 V
M41T81
CC
CC
≤ 50 ns
100 pF
to 0.8V
to 0.7V
Max
10
50
7
CC
CC
AI02568
Unit
21/29
pF
pF
ns