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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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FM3164 Datenblatt(PDF) 10 Page - Ramtron International Corporation |
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FM3164 Datenblatt(HTML) 10 Page - Ramtron International Corporation |
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10 / 25 page  FM3104/16/64/256 Rev. 3.2 July 2010 Page 10 of 25 Register Map The RTC and processor companion functions are accessed via 25 special function registers mapped to a separate 2- wire device ID. The interface protocol is described below. The registers contain timekeeping data, control bits, or information flags. A description of each register follows the summary table below. Register Map Summary Table Nonvolatile = Battery-backed = Data Address D7 D6 D5 D4 D3 D2 D1 D0 Function Range Serial Number Byte 7 Serial Number 7 FFh Serial Number Byte 6 Serial Number 6 FFh Serial Number Byte 5 Serial Number 5 FFh Serial Number Byte 4 Serial Number 4 FFh Serial Number Byte 3 Serial Number 3 FFh Serial Number Byte 2 Serial Number 2 FFh Serial Number Byte 1 Serial Number 1 FFh Serial Number Byte 0 Serial Number 0 FFh 10h Counter 2 MSB Event Counter 2 MSB FFh 0Fh Counter 2 LSB Event Counter 2 LSB FFh 0Eh Counter 1 MSB Event Counter 1 MSB FFh 0Dh Counter 1 LSB Event Counter 1 LSB FFh 0Ch RC CC C2P C1P Event Count Control 0Bh SNL - - WP1 WP0 VBC VTP1 VTP0 Companion Control 0Ah WDE - - WDT4 WDT3 WDT2 WDT1 WDT0 Watchdog Control 09h WTR POR LB - WR3 WR2 WR1 WR0 Watchdog Restart/Flags 08h 10 years years Years 00-99 07h 0 0 0 10 mo months Month 1-12 06h 00 10 date date Date 1-31 05h 0 000 0 day Day 1-7 04h 00 10 hours hours Hours 0-23 03h 0 10 minutes minutes Minutes 0-59 02h 0 10 seconds seconds Seconds 0-59 01h /OSCEN reserved CALS CAL4 CAL3 CAL2 CAL1 CAL0 CAL/Control 00h reserved CF reserved reserved reserved CAL W R RTC Control 18h 17h 11h 16h 15h 14h 13h 12h Note: When the device is first powered up and programmed, all registers must be written because the battery- backed register values cannot be guaranteed. The table below shows the default values of the non-volatile registers. All other register values should be treated as unknown. Default Register Values Address Hex Value 18h 0x00 17h 0x00 16h 0x00 15h 0x00 14h 0x00 13h 0x00 12h 0x00 11h 0x00 0Bh 0x00 0Ah 0x1F 01h 0x80 |
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Ähnliche Beschreibung - FM3164 |
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