7.3 Chip Identification
The AT91SAM9G45 Chip ID is defined in the Debug Unit Chip ID Register and Debug Unit Chip ID Extension
Register.
• Chip ID: 0x819B05A2
• Ext ID: 0x00000004
• JTAG ID: 05B2_703F
• ARM926 TAP ID: 0x0792603F
7.4 Backup Section
The SAM9G45 features a Backup Section that embeds:
• RC Oscillator
• Slow Clock Oscillator
• SCKR register
• RTT
• RTC
• Shutdown Controller
• 4 backup registers
• A part of RSTC
This section is powered by the VDDBU rail.
SAM9G45 [DATASHEET] 22
6438K–ATARM–12-Feb-13