The M41T256YMT7F is a Real Time Clock (RTC) from Quarktwin Technology Ltd. designed for applications requiring accurate timekeeping. It operates at a voltage range of 4.5 to 5.5V and features a serial interface that supports extended I¬=C bus addressing at speeds up to 400kHz. The device includes counters for various time units, such as seconds, minutes, hours, days, and years, along with programmable software clock calibration. This RTC is equipped with 32,752 bytes of general-purpose RAM and includes automatic switch-over and deselect circuitry to manage power failures effectively. It also features a microprocessor power-on reset function, ensuring that the microprocessor remains in reset until the supply voltage stabilizes. Additionally, the M41T256YMT7F has a tamper indication circuit with time-stamping capabilities and a sleep mode function to conserve power during inactivity. The product is available in a 44-lead SOIC package, which allows for direct connection to a SNAPHAT¬Æ top that contains the battery and crystal.
"Real Time Clock (RTC) IC Clock/Calendar 32KB I²C, 2-Wire Serial 44-BSOP (0.337"", 8.56mm Width)"
Real Time Clock (RTC) IC Clock/Calendar 32KB I²C, 2-Wire Serial 44-BSOP (0.337", 8.56mm Width)
IC RTC CLK/CALENDAR I2C 44SOH
IC RTC CLK/CALENDAR I2C 44-SOP
| DigiKey | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | |
|---|---|---|---|---|
| Product Category | IC Clocks | IC Clocks | IC Clocks | IC Clocks |
| Product Number | 497-4702-2-ND | M41T256YMT7F | M41T256YMT7F | M41T256YMT7F |
| Product Name | Real Time Clocks | Real Time Clocks | Integrated Circuits (ICs) - Clock-Timing - Real Time Clocks | Clock/Timing - Real Time Clocks |
| Device Type | Real Time Clock | Real Time Clock | Clock/Calendar; Real Time Clock | Real Time Clock |
| Package Type | Surface Mount; "44-BSOP (0.337"", 8.56mm Width)" | Surface Mount; 44-BSOP (0.337\", 8.56mm Width) | Surface Mount; Surface Mount | |
| Supply Voltage | 4.5 to 5.5 volts | 4.5 to 5.5 volts |
