M41T81SMY6E STMicroelectronics, M41T81SMY6E Datasheet - Page 24

• Manufacturer Part Number: M41T81SMY6E
• Description: IC RTC SER W/ALARMS 18-SOIC
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T81SMY6E

• Memory Size: 20B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DC and AC parameters
5
Note:
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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 7.
Output Hi-Z is defined as the point where data is no longer driven.
Figure 15. 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 10773 Rev 6
A
)
Parameter
(1)(2)
0.7V CC
0.3V CC
0.2V
0.3V
Min
-
-
-
–40 to 85 °C
2.7 to 5.5 V
M41T81S
CC
CC
≤ 50 ns
100 pF
to 0.8V
to 0.7V
Max
10
50
7
M41T81S
CC
CC
AI02568
Unit
pF
pF
ns