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1745D–ATARM–04-Nov-05
AT91M55800A
13.3 RTC User Interface
Base Address:0xFFFB8000 (Code Label RTC_BASE)
Table 13-1. RTC Memory Map
Offset Register Name Access Reset State
0x0000 Mode Register RTC_MR Read/Write 0x00000000
0x0004 Hour Mode Register RTC_HMR Read/Write 0x00000000
0x0008 Time Register RTC_TIMR Read/Write 0x00000000
0x000C Calendar Register RTC_CALR Read/Write 0x01819819
0x0010 Time Alarm Register RTC_TAR Read/Write 0x00000000
0x0014 Calendar Alarm Register RTC_CAR Read/Write 0x00000000
0x0018 Status Register RTC_SR Read-only 0x00000000
0x001C Status Clear Register RTC_SCR Write-only –
0x0020 Interrupt Enable Register RTC_IER Write-only –
0x0024 Interrupt Disable Register RTC_IDR Write-only –
0x0028 Interrupt Mask Register RTC_IMR Read-only 0x00000000
0x002C Valid Entry Register RTC_VER Read-only 0x00000000