| Manufacturer | Part # | Datasheet | Description |
 Intersil Corporation |
X9400
|
375Kb / 21P |
Low Noise/Low Power/SPI Bus
March 31, 2005 |
|
X9401
|
371Kb / 20P |
Low Noise/Low Power/SPI Bus
September 23, 2005 |
 STMicroelectronics |
M41T93
|
416Kb / 49P |
Serial SPI bus RTC with battery switchover
07-Aug-2006 |
|
M41T93
|
382Kb / 51P |
Serial SPI bus RTC with battery switchover
22-Oct-2007 |
|
M41T93
|
446Kb / 51P |
Serial SPI bus RTC with battery switchover
15-Aug-2008 |
 Golledge Electronics Lt... |
RV1805C3
|
758Kb / 5P |
RTC I C Bus Low Power
|
|
RV3049C2
|
749Kb / 5P |
RTC SPI Bus
|
|
RV3049C3
|
749Kb / 5P |
RTC SPI Bus
|
|
RV8523C3
|
743Kb / 5P |
RTC I C bus Low Power
|
 Renesas Technology Corp |
X9410
|
479Kb / 21P |
Low Noise/Low Power/SPI Bus
October 12, 2006 |