| Manufacturer | Part # | Datasheet | Description |

Abracon Corporation
|
AB18X5-RTC |
655Kb/37P |
Baseline timekeeping features Revision: C |

Dallas Semiconductor
|
DS1643 |
81Kb/11P |
Nonvolatile Timekeeping RAM |

Maxim Integrated Produc...
|
DS1647 |
383Kb/12P |
Nonvolatile Timekeeping RAM 1955 96 ; Rev 10/10 |

Dallas Semiconductor
|
DS1202 |
100Kb/11P |
Serial Timekeeping Chip |

ARTSCHIP ELECTRONICS CO...
|
DS1643 |
316Kb/11P |
Nonvolatile Timekeeping RAM |

Maxim Integrated Produc...
|
DS1384 |
484Kb/18P |
Watchdog Timekeeping Controller REV: 112105 |

Intersil Corporation
|
ICM7245B |
2Mb/99P |
TIMEKEEPING DTMF CIRCUITS |

Dallas Semiconductor
|
DS1642 |
138Kb/11P |
Nonvolatile Timekeeping RAM |
| DS1643 |
182Kb/14P |
Nonvolatile Timekeeping RAM |
| DS1646 |
182Kb/11P |
Nonvolatile Timekeeping RAM |

ARTSCHIP ELECTRONICS CO...
|
DS1642 |
221Kb/8P |
Nonvolatile Timekeeping RAM |
| DS1647 |
186Kb/10P |
Nonvolatile Timekeeping RAM |

Maxim Integrated Produc...
|
DS1646-120 |
204Kb/13P |
Nonvolatile Timekeeping RAM Rev 10/10 |
| DS1643 |
209Kb/17P |
Nonvolatile Timekeeping RAMs Rev 5/10 |

Dallas Semiconductor
|
DS1384 |
307Kb/17P |
Watchdog Timekeeping Controller |
| DS1644LPM |
108Kb/11P |
Nonvolatile Timekeeping RAM? |

Maxim Integrated Produc...
|
DS1643 |
225Kb/17P |
Nonvolatile Timekeeping RAMs Rev 12/09 |
| DS1642 |
145Kb/13P |
Nonvolatile Timekeeping RAM Rev 5/10 |
| DS1644 |
215Kb/14P |
Nonvolatile Timekeeping RAM Rev 4/10 |

Dallas Semiconductor
|
DS1644P |
302Kb/13P |
Nonvolatile Timekeeping RAM |