SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 24

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Figure 8-3.
8.1.5.3
8.1.5.4
24
AT91SAM9XE128/256/512 Preliminary
256, 512 or
1024 Pages
GPNVM Bits
Security Bit
Flash First Memory Plane Mapping
0x0020 0000
0x0021 FFFF
or 0x0023 FFFF
or 0x0027 FFFF
The AT91SAM9XE128/256/512 features four GPNVM bits that can be cleared or set respec-
tively through the commands “Clear GPNVM Bit” and “Set GPNVM Bit” of the EEFC User
Interface.
Table 8-2.
The AT91SAM9XE128/256/512 features a security bit, based on a specific GPNVM bit, GPN-
VMBit[0]. When the security is enabled, access to the Flash, either through the ICE interface or
through the Fast Flash Programming Interface, is forbidden. This ensures the confidentiality of
the code programmed in the Flash.
Disabling the security bit can only be achieved by asserting the ERASE pin at 1, and after a full
Flash erase is performed. When the security bit is deactivated, all accesses to the Flash are
permitted.
As the ERASE pin integrates a permanent pull-down, it can be left unconnected during normal
operation.
GPNVMBit[#]
128, 256 or 512 Kbytes
Locked Regions Area
32 bits wide
0
1
2
3
General-purpose Non volatile Memory Bits
Function
Security Bit
Brownout Detector Enable
Brownout Detector Reset Enable
Boot Mode Select (BMS)
Locked Region 7, 15 or 31
Locked Region 0
16 Kbytes
Page 0
Page 31
6254CS–ATARM–08-Jan-10
512 bytes