| M41T82 | Serial I²C bus real-time clock (RTC) with battery switchover | true | 365 | true | Active | -40 | 85 | 2.38 | 5.5 | SO-8 | 1.8 | I2C | true | true | 12 |
| M41T81S | Serial real-time clock (RTC) with alarm | true | 600 | true | Active | -40 | 85 | 2.7 | 5.5 | SO-8,SO18 with embedded crystal | 2 | I2C | true |
| M41T64 | Low-power serial real-time clock (RTC) with alarm | 350 | Active | -40 | 85 | 1.3 | 4.4 | VFQFPN 16 3x3x0.9 | 1 | I2C | true |
| M41T01 | Serial real-time clock (RTC) with built-in battery switchover circuit | 800 | true | Active | -40 | 85 | 2 | 5.5 | SO-8 | 2 | I2C |
| M41T56 | Serial real-time clock (RTC) with 56 bytes NVRAM | 450 | true | Active | -40 | 85 | 4.5 | 5.5 | SO-8 | 2.5 | I2C | 56 |
| M41T93 | Serial SPI bus real-time clock (RTC) with battery switchover | true | 365 | true | Active | -40 | 85 | 2.38 | 5.5 | SO18 with embedded crystal,VFQFPN 16 4x4x1.0 | 1.8 | SPI | true | true | 12 |
| M41T80 | Serial real-time clock (RTC) with alarm | 1500 | Active | -40 | 85 | 2 | 5.5 | SO-8 | 2 | I2C |
| M41T00CAP | Serial real-time clock (RTC) with integral backup battery and crystal | true | Active | 0 | 70 | 2.7 | 5.5 | PDIP 24 .7 | I2C | true |
| M41T00S | Serial real-time clock (RTC) | 600 | true | Active | -40 | 85 | 2.7 | 5.5 | SO-8 | 2 | I2C | true |
| M41T00 | Serial real-time clock (RTC) | 800 | true | Active | -40 | 85 | 2 | 5.5 | SO-8 | 2 | I2C |
| M41T83 | Serial I²C bus real-time clock (RTC) with battery switchover | true | 365 | true | Active | -40 | 85 | 2.38 | 5.5 | SO18 with embedded crystal,VFQFPN 16 4x4x1.0 | 1.8 | I2C | true | true | 12 |
| M41T62 | Low-power serial real-time clock (RTC) with alarm | 350 | Active | -40 | 85 | 1.3 | 4.4 | LCC8 3.2x1.5 mm,VFQFPN 16 3x3x0.9 | 1 | I2C | true |
| M41T11 | Serial real-time clock (RTC) with 56 bytes of NVRAM | 800 | true | Active | -40 | 85 | 2 | 5.5 | SO-28,SO-8 | 2 | I2C | 56 |
| M41T00AUD | Serial real-time clock (RTC) with audio | 600 | true | Active | 0 | 70 | 3 | 3.6 | DFN16 5X4X0.9 | 1.7 | I2C | true |
| M41T65 | Low-power serial real-time clock (RTC) with alarm | 350 | Active | -40 | 85 | 1.3 | 4.4 | VFQFPN 16 3x3x0.9 | 1 | I2C | true |
| M41T66 | Serial real-time clock (RTC) with alarm | 525 | Active | -40 | 85 | 1.5 | 4.4 | VFQFPN 16 3x3x0.9 | 1 | I2C | true |
| M41ST85W | 3.0/3.3 V I²C combination real-time clock, NVRAM supervisor and microprocessor supervisor | true | 400 | true | Active | -40 | 85 | 2.7 | 3.6 | SO-28,SO28 WITH EMBEDDED CRYSTAL | I2C | true | 44 |
| M41T81 | Serial real-time clock (RTC) with alarm | true | 600 | true | Active | -40 | 85 | 2 | 5.5 | SO-8 | 2 | I2C |
| M41ST87W | 5.0 V, 3.3/3.0 V secure real-time clock , NVRAM supervisor with tamper detection and 128 bytes of clearable NVRAM | true | 500 | true | Active | -40 | 85 | 2.7 | 3.6 | SO28 WITH EMBEDDED CRYSTAL,SSOP 20 7.2x5.3 | I2C | true | true | 128 |
| M41T94 | Serial real-time clock (RTC) with 44 bytes NVRAM and reset | true | 400 | true | Active | -40 | 85 | 2.7 | 5.5 | SO-16,SO-28 | SPI | true | 44 |
| M41T0 | Serial real-time clock (RTC) | 900 | Active | -40 | 85 | 2 | 5.5 | SO-8 | 2 | I2C | true |
| M41T60 | Low power serial real-time clock (RTC) | 350 | Active | -40 | 85 | 1.3 | 4.4 | VFQFPN 16 3x3x0.9 | 1 | I2C | true |
