STMicroelectronics M41T81SMY6F Real Time Clocks
Real Time Clock (RTC) IC Clock/Calendar I2C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
M41T81SMY6F
Detailed Description
IC RTC CLK/CALENDAR I2C 18-SOIC
Package
18-SOX, 18-SOIC with Crystal (7.5mm Width)
Key Features
Package / Case: 18-SOX, 18-SOIC with Crystal (7.5mm Width); Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
M41T81SMY6F Datasheet
Quick Jump:
Technical Specifications
STMicroelectronics M41T81SMY6F Real Time Clocks technical specifications.
General
Interface
I²C, 2-Wire Serial
Package / Case
18-SOX
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C
Supply Voltage
2.7V ~ 5.5V
Lifecycle Status
Active
Features
Alarm, Leap Year, Square Wave Output, Watchdog Timer
Type
Clock/Calendar
Time Format
HH:MM:SS:hh (24 hr)
Date Format
YY-MM-DD-dd
Alternate Parts Comparison (M41T81SMY6F vs M41T83SMY6F vs M41T93RMY6F vs M41T83ZMY6F)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 18-SOX | 18-SOX | 18-SOX | 18-SOX |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Supply Voltage | 2.7V ~ 5.5V | 3V ~ 5.5V | 2.7V ~ 5.5V | 2.38V ~ 5.5V |
| Interface | I²C, 2-Wire Serial | I²C, 2-Wire Serial | SPI | I²C, 2-Wire Serial |
| Current Timekeeping Max | 100µA @ 2.7V ~ 5.5V | 10µA @ 5.5V | 10µA @ 5.5V | 10µA @ 5.5V |
| Date Format | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd | YY-MM-DD-dd |
| Features | Alarm, Leap Year, Square Wave Output, Watchdog Timer | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer |
| Time Format | HH:MM:SS:hh (24 hr) | HH:MM:SS:hh (24 hr) | HH:MM:SS:hh (24 hr) | HH:MM:SS:hh (24 hr) |
| Type | Clock/Calendar | Clock/Calendar | Clock/Calendar | Clock/Calendar |
| Voltage Supply Battery | 2V ~ 3.5V | 2V ~ 5.5V | 1.8V ~ 5.5V | 2V ~ 5.5V |
| Memory Size | -- | 7B | 7B | 7B |
| Action |
More Parts in Real Time Clocks
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
M41T83SMY6FSTMicroelectronicsReal Time Clock (RTC) IC Clock/Calendar 7B I2C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
M41T93RMY6FSTMicroelectronicsReal Time Clock (RTC) IC Clock/Calendar 7B SPI 18-SOX, 18-SOIC with Crystal (7.5mm Width)
M41T83ZMY6FSTMicroelectronicsReal Time Clock (RTC) IC Clock/Calendar 7B I2C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)
M41T83SMY6ESTMicroelectronicsReal Time Clock (RTC) IC Clock/Calendar 7B I2C, 2-Wire Serial 18-SOX, 18-SOIC with Crystal (7.5mm Width)