Real Time Clocks
Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.
Sourcing STMicroelectronics Real Time Clocks: in-stock lines for quick ship, BOM matching for multi-line builds, and original-channel screening — not keyword stuffing.
Product List
Total Components: 146
| Product | Pricing | Datasheet | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply, Battery | Current - Timekeeping (Max) | Type | Mounting Type | Operating Temperature | Voltage - Supply | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 M41T11M6E STMicroelectronics | Leap Year, NVSRAM | 56B | HH:MM:SS | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 70µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 9,892 | ||
 M41T11MH6E STMicroelectronics | Leap Year, NVSRAM | 56B | HH:MM:SS | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 70µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 1,408 | ||
 M41T256YMH7E STMicroelectronics | Leap Year, NVSRAM | 32KB | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 2.5mA @ 4.5V ~ 5.5V | Clock/Calendar | Surface Mount | -25°C ~ 70°C | 4.5V ~ 5.5V | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | 44-SOH | 3,365 | ||
M41T256YMT7E STMicroelectronics | Leap Year, NVSRAM | 32KB | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 2.5mA @ 4.5V ~ 5.5V | Clock/Calendar | Surface Mount | -25°C ~ 70°C | 4.5V ~ 5.5V | 44-BSOP (0.337", 8.56mm Width) | 44-SOH | 2,602 | ||
M41T315V-85MH6E STMicroelectronics | Leap Year, Supervisor | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | Serial | 2.5V ~ 3.7V | 2mA @ 2.7V ~ 3.6V | Phantom Time Chip | Surface Mount | -40°C ~ 85°C | 3V ~ 3.6V | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 1,915 | ||
M41T56M6E STMicroelectronics | Leap Year, NVSRAM | 56B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 100µA (Typ) @ 4.5V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 4.5V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 9,769 | ||
M41T56MH6E STMicroelectronics | Leap Year, NVSRAM | 56B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 100µA (Typ) @ 4.5V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 4.5V ~ 5.5V | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 6,102 | ||
M41T80M6E STMicroelectronics | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 2.4µA ~ 31µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 9,202 | ||
M41T81M6E STMicroelectronics | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 100µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 8,704 | ||
M41T81MX6 STMicroelectronics | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2.5V ~ 3.5V | 100µA @ 2V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 5,915 | ||
M41T94MH6E STMicroelectronics | Alarm, Leap Year, NVRAM, Square Wave Output, Watchdog Timer | 44B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | SPI | 2.5V ~ 3.5V | 1.4mA @ 2.7V ~ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.7V ~ 5.5V | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 2,462 | ||
 M48T02-200PC1 STMicroelectronics | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 3mA @ 4.7V ~ 5.5V | Clock/Calendar | Through Hole | 0°C ~ 70°C | 4.75V ~ 5.5V | 24-DIP Module (0.600", 15.24mm) | 24-PCDIP, CAPHAT® | 2,565 | ||
M48T08Y-10MH1E STMicroelectronics | Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 3mA @ 4.5V ~ 5.5V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 4.5V ~ 5.5V | 28-SOP (0.350", 8.89mm Width) with SNAPHAT Sockets | 28-SOH | 4,442 | ||
M48T12-200PC1 STMicroelectronics | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 3mA @ 4.5V ~ 5.5V | Clock/Calendar | Through Hole | 0°C ~ 70°C | 4.5V ~ 5.5V | 24-DIP Module (0.600", 15.24mm) | 24-PCDIP, CAPHAT® | 4,516 | ||
 M48T128Y-70PM1 STMicroelectronics | Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 4mA @ 4.5V ~ 5.5V | Clock/Calendar | Through Hole | 0°C ~ 70°C | 4.5V ~ 5.5V | 32-DIP Module (0.600", 15.24mm) | 32-PMDIP | 8,252 | ||
M48T129V-85PM1 STMicroelectronics | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 3mA @ 3V ~ 3.6V | Clock/Calendar | Through Hole | 0°C ~ 70°C | 3V ~ 3.6V | 32-DIP Module (0.600", 15.24mm) | 32-PMDIP Module | 8,712 | ||
M48T129Y-70PM1 STMicroelectronics | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | - | 4mA @ 4.5V ~ 5.5V | Clock/Calendar | Through Hole | 0°C ~ 70°C | 4.5V ~ 5.5V | 32-DIP Module (0.600", 15.24mm) | 32-PMDIP | 8,806 | ||
M48T201V-85MH1E STMicroelectronics | Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V | 2mA @ 3V ~ 3.6V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 3V ~ 3.6V | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | 44-SOH | 7,895 | ||
M48T201V-85MH1F STMicroelectronics | 1 $16.9500 | Alarm, Leap Year, Square Wave Output, Supervisor, Watchdog Timer, Y2K | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | Parallel | 3V | 2mA @ 3V ~ 3.6V | Clock/Calendar | Surface Mount | 0°C ~ 70°C | 3V ~ 3.6V | 44-BSOP (0.337", 8.56mm Width) requires SNAPHAT | 44-SOH | 9,708 | |
 M41T83ZQA6F STMicroelectronics | 1 $4.2900 | Alarm, Leap Year, Square Wave Output, SRAM, Watchdog Timer | 7B | HH:MM:SS:hh (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 2V ~ 5.5V | 10µA @ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.38V ~ 5.5V | 16-VQFN Exposed Pad | 16-QFN (4x4) | 7,666 |