M41T83RQA6F

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M41T83RQA6F

+Nomenclature

IC RTC CLK/CAL I2C 16-VFQFPN

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Spécifications

Attribut Valeur
Supplier STMicroelectronics
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type Clock/Calendar
Features Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer
MemorySize 7B
TimeFormat HH:MM:SS:hh (24 hr)
DateFormat YY-MM-DD-dd
Interface I²C, 2-Wire Serial
Voltage-Supply 2.7V ~ 5.5V
Voltage-SupplyBattery 2V ~ 5.5V
Current-Timekeeping(Max) 10µA @ 5.5V
OperatingTemperature -40°C ~ 85°C
MountingType Surface Mount
Package/Case 16-VQFN Exposed Pad

Présentation

Description

M41T83RQA6F is an I2C real-time clock/calendar (RTC) IC from STMicroelectronics. It provides timekeeping and calendar functions for embedded systems, with backup power capability so time is preserved during power loss. The device typically relies on a 32.768 kHz crystal for accurate timekeeping and offers features such as seconds, minutes, hours, day-of-week, date, month, year, and leap-year handling. It also includes alarm and timer functions for wake-up and control tasks. Communicating over I2C (two-wire) and offered in small 8-pin packages, it’s designed for low-power operation. Applications include microcontroller-based systems requiring precise, power-fail-tolerant timekeeping, such as wearables, data loggers, and industrial equipment.

Equivalent

Functional equivalents (I2C RTCs with calendar/ RAM) to M41T83RQA6F:
- NXP PCF8563
- NXP PCF8583
- Maxim DS3231/DS3232
Note: none are direct 1:1 pin-for-pin substitutes. Verify voltage, package, RAM size, timing, and feature parity before substituting.

Features

Here are the key features of M41T83RQA6F:
- I2C-bus real-time clock/calendar (seconds, minutes, hours, day, date, month, year; 12/24-hour mode; leap-year aware)
- Two programmable alarm outputs and a timer
- Programmable square-wave output (clock signal)
- Battery-backup operation with automatic switchover
- Trickle-charge circuit to support backup power
- On-chip battery-backed RAM for data retention
- 32.768 kHz crystal oscillator input
- 8-pin package; operating range ~2.0–5.5 V; temperature range typically -40°C to +85°C
- Low-power operation in backup mode
- Flexible register-driven configuration (addresses/features selectable via registers)
These summarize typical RTC/calendar, alarm/timer, and backup features you’d expect in the M41T83 family.

Pinout

- Pin count: 8 pins (8-pin package)
- Function: I2C real-time clock/calendar (RTC) with battery-backed timekeeping, providing seconds/minutes/hours, date, month, year, plus alarm and a programmable 32 kHz square-wave output (requires a 32.768 kHz crystal).

Manufacturer

- Manufacturer: STMicroelectronics (ST)
- What kind of company: A European multinational semiconductor company that designs and manufactures a wide range of integrated circuits and electronic components (including RTCs, MEMS, microcontrollers, sensors, and power devices).

Application

M41T83RQA6F is an I2C real‑time clock/calendar with battery-backed RAM. Typical applications include:
- Embedded systems needing accurate timekeeping (MCUs, SBCs, wearables)
- Data logging and event timestamping (sensors, meters, industrial equipment)
- Alarm, wake‑up, and scheduling functions
- Nonvolatile storage across power loss (RAM backed by battery)
- Time-stamping for automotive, consumer electronics, medical devices, and IoT
- Systems requiring calendar/time reference and a stable 32kHz clock.

Package

8-pin SOIC (surface-mount) package; RoHS-compliant/lead-free.

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