| Part Number | Package | Marketing Status | SRAM Supervisor | Battery Supply Current(Ibat) typ (nA) | NVRAM size | Data bus type | Supply Voltage(Vcc) min (V) | Supply Voltage(Vcc) max (V) | Supply Voltage(VDD) (For Timekeeping) min (V) | Programmable Alarms | Square Wave Output(SQW) | Oscillator fail detect | Output Frequency(Fout) typ (kHz) | Battery Switchover(VSO) | Watchdog Timer | Battery Low Detect(BL) | Power Fail Comparator(PFI/PFO) | Power on reset/Low voltage detector output(POR/LVD) | Reset inputs(RSTin) | Operating Temperature min (°C) | Operating Temperature max (°C) |
| M41ST85W | SO-28; SO28 WITH EMBEDDED CRYSTAL | Active | Yes | 400 | 44 | I2C | 2.7 | 3.6 | - | Yes | Yes | - | - | Yes | Yes | Yes | Yes | Yes | Yes | -40 | 85 |
| M41ST87W | SO28 WITH EMBEDDED CRYSTAL; SSOP 20 7.2x5.3 | Active | Yes | 500 | 128 | I2C | 2.7 | 3.6 | - | Yes | Yes | Yes | 32 | Yes | Yes | Yes | Yes | Yes | Yes | -40 | 85 |
| M41T0 | SO-8 | Active | - | 900 | - | I2C | 2 | 5.5 | 2 | - | - | Yes | - | - | - | - | - | - | - | -40 | 85 |
| M41T00 | SO-8 | Active | - | 800 | - | I2C | 2 | 5.5 | 2 | - | - | - | - | Yes | - | - | - | - | - | -40 | 85 |
| M41T00AUD | DFN16 5X4X0.9 | Active | - | 600 | - | I2C | 3 | 3.6 | 1.7 | - | - | Yes | 32 | Yes | - | - | - | - | - | 0 | 70 |
| M41T00CAP | PDIP 24 .7 | Active | - | - | - | I2C | 2.7 | 5.5 | - | - | - | Yes | - | Yes | - | - | - | - | - | 0 | 70 |
| M41T00S | SO-8 | Active | - | 600 | - | I2C | 2.7 | 5.5 | 2 | - | - | Yes | - | Yes | - | - | - | - | - | -40 | 85 |
| M41T01 | SO-8 | Active | - | 800 | - | I2C | 2 | 5.5 | 2 | - | - | - | - | Yes | - | - | - | - | - | -40 | 85 |
| M41T11 | SO-28; SO-8 | Active | - | 800 | 56 | I2C | 2 | 5.5 | 2 | - | - | - | - | Yes | - | - | - | - | - | -40 | 85 |
| M41T56 | SO-8 | Active | - | 450 | 56 | I2C | 4.5 | 5.5 | 2.5 | - | - | - | - | Yes | - | - | - | - | - | -40 | 85 |
| M41T60 | VFQFPN 16 3x3x0.9 | Active | - | 350 | - | I2C | 1.3 | 4.4 | 1 | - | - | Yes | - | - | - | - | - | - | - | -40 | 85 |
| M41T62 | LCC8 3.2x1.5 mm; VFQFPN 16 3x3x0.9 | Active | - | 350 | - | I2C | 1.3 | 4.4 | 1 | Yes | Yes | Yes | 32 | - | Yes | - | - | - | - | -40 | 85 |
| M41T64 | VFQFPN 16 3x3x0.9 | Active | - | 350 | - | I2C | 1.3 | 4.4 | 1 | - | Yes | Yes | 32 | - | Yes | - | - | - | - | -40 | 85 |
| M41T65 | VFQFPN 16 3x3x0.9 | Active | - | 350 | - | I2C | 1.3 | 4.4 | 1 | Yes | - | Yes | - | - | Yes | - | - | - | - | -40 | 85 |
| M41T66 | VFQFPN 16 3x3x0.9 | Active | - | 525 | - | I2C | 1.5 | 4.4 | 1 | Yes | Yes | Yes | 32 | - | Yes | - | - | - | - | -40 | 85 |
| M41T80 | SO-8 | Active | - | 1500 | - | I2C | 2 | 5.5 | 2 | Yes | Yes | - | - | - | - | - | - | - | - | -40 | 85 |
| M41T81 | SO-8 | Active | - | 600 | - | I2C | 2 | 5.5 | 2 | Yes | Yes | - | - | Yes | Yes | Yes | - | - | - | -40 | 85 |
| M41T81S | SO-8; SO18 with embedded crystal | Active | - | 600 | - | I2C | 2.7 | 5.5 | 2 | Yes | Yes | Yes | - | Yes | Yes | Yes | - | - | - | -40 | 85 |
| M41T82 | SO-8 | Active | - | 365 | 12 | I2C | 2.38 | 5.5 | 1.8 | - | - | Yes | - | Yes | - | Yes | - | Yes | - | -40 | 85 |
| M41T83 | SO18 with embedded crystal; VFQFPN 16 4x4x1.0 | Active | - | 365 | 12 | I2C | 2.38 | 5.5 | 1.8 | Yes | Yes | Yes | 32 | Yes | Yes | Yes | - | Yes | - | -40 | 85 |
| M41T93 | SO18 with embedded crystal; VFQFPN 16 4x4x1.0 | Active | - | 365 | 12 | SPI | 2.38 | 5.5 | 1.8 | Yes | Yes | Yes | 32 | Yes | Yes | Yes | - | Yes | - | -40 | 85 |
| M41T94 | SO-16; SO-28 | Active | - | 400 | 44 | SPI | 2.7 | 5.5 | - | Yes | Yes | - | - | Yes | Yes | Yes | - | Yes | Yes | -40 | 85 |
