| 制造商 | 部件名 | 数据表 | 功能描述 |

Dallas Semiconductor
|
DS1286 |
234Kb/13P |
Watchdog Timekeeper |

STMicroelectronics
|
M440T513Y |
425Kb/26P |
5.0V, 16 Mbit (512 Kbit x 32) TIMEKEEPER-R SRAM |
| M48T212V |
312Kb/35P |
3.3V TIMEKEEPER supervisor |

Holtek Semiconductor In...
|
HT1381-8SOPLF |
172Kb/10P |
Serial Timekeeper Chip |
| HT1380 |
183Kb/10P |
Serial Timekeeper Chip |

ARTSCHIP ELECTRONICS CO...
|
M48T08 |
7Mb/27P |
TIMEKEEPER SRAM |
| DS1286 |
538Kb/11P |
Watchdog Timekeeper |

STMicroelectronics
|
AN968 |
100Kb/4P |
VMEbus TIMEKEEPER |

Dallas Semiconductor
|
DS1284 |
143Kb/3P |
Watchdog Timekeeper Chip |

ARTSCHIP ELECTRONICS CO...
|
M48T02 |
6Mb/21P |
TIMEKEEPER SRAM |

STMicroelectronics
|
M48T201Y |
477Kb/33P |
3.3V-5V TIMEKEEPER CONTROLLER |
| M4TXX-BR12SH |
51Kb/7P |
TIMEKEEPER SNAPHAT Battery & Crystal November 1999 |
| M4T28-BR12SH |
172Kb/12P |
TIMEKEEPER SNAPHAT (BATTERY & CRYSTAL) |

Dallas Semiconductor
|
DS1386 |
263Kb/20P |
RAMified Watchdog Timekeeper |

Holtek Semiconductor In...
|
HT1380A |
1Mb/14P |
Serial Timekeeper Chip |

Dallas Semiconductor
|
DS1486 |
251Kb/17P |
RAMified Watchdog Timekeeper |

STMicroelectronics
|
M41T00 |
99Kb/15P |
Serial Access TIMEKEEPER |
| M48T212A |
165Kb/20P |
3.3V TIMEKEEPER CONTROLLER |

Dallas Semiconductor
|
DS1283 |
55Kb/5P |
Watchdog Timekeeper Chip |

Holtek Semiconductor In...
|
HT1380 |
125Kb/14P |
Serial Timekeeper Chip |