| 型号 | 概述 |
| M4T32-BR12SH | TIMEKEEPER SNAPHAT battery & crystal |
| M4T28-BR12SH | TIMEKEEPER SNAPHAT battery & crystal |
| M41TC8025 | Highly accurate, temperature-compensated serial real-time clock (RTC) with embedded crystal |
| M41T94 | Serial real-time clock (RTC) |
| M41T93 | Serial SPI bus real-time clock (RTC) with battery switchover |
| M41T83 | Serial SPI bus real-time clock (RTC) with battery switchover |
| M41T82 | Serial I²C bus real-time clock (RTC) with battery switch-over |
| M41T81S | Serial real-time clock (RTC) with alarm |
| M41T81 | Serial real-time clock (RTC) with alarm |
| M41T80 | Serial real-time clock (RTC) with alarm |
| M41T66 | Serial real-time clock (RTC) with alarm |
| M41T65 | Serial real-time clock (RTC) with alarm |
| M41T64 | Serial real-time clock (RTC) with alarm |
| M41T63 | Serial real-time clock (RTC) with alarm |
| M41T62 | Serial real-time clock (RTC) with alarm |
| M41T60 | Serial real-time clock (RTC) with 44 bytes NVRAM and reset |
| M41T56 | Serial real-time clock (RTC) with 56 bytes NVRAM |
| M41T11 | Serial real-time clock (RTC) with 56 bytes of NVRAM |
| M41T00S | Serial real-time clock (RTC) |
| M41T00CAP | Serial real-time clock (RTC) with battery |
| M41T00AUD | Serial real-time clock (RTC) with audio |
| M41T00 | Serial real-time clock (RTC) |
| M41T0 | Serial SPI bus real-time clock (RTC) with battery switchover |
| M41ST87W | Serial real-time clock (RTC) supervisor |
| M41ST85W | Serial real-time clock (RTC) with 44 bytes NVRAM and reset |
