SAM7SE256 Atmel Corporation, SAM7SE256 Datasheet - Page 89

• Manufacturer Part Number: SAM7SE256
• Manufacturer: Atmel Corporation

Specifications of SAM7SE256

• Flash (kbytes): 256 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 48 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 88
• Ext Interrupts: 88
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 3
• Ssc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• 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): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

18.4
18.4.1
6222F–ATARM–14-Jan-11
External Memory Areas
Internal Memory Mapping
Figure 18-2
Figure 18-2. External Memory Areas
Within the Internal Memory address space, the Address Decoder of the Memory Controller
decodes eight more address bits to allocate 1-Mbyte address spaces for the embedded
memories.
The allocated memories are accessed all along the 1-Mbyte address space and so are repeated
n times within this address space, n equaling 1M bytes divided by the size of the memory.
When the address of the access is undefined within the internal memory area, the Address
Decoder returns an Abort to the master.
shows the assignment of the 256-Mbyte memory areas.
6 x 256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
256M Bytes
1,536 bytes
0xF000 0000
0x0000 0000
0x1000 0000
0x2000 0000
0x3000 0000
0x4000 0000
0x5000 0000
0x6000 0000
0x7000 0000
0x8000 0000
0xEFFF FFFF
0xFFFF FFFF
0x0FFF FFFF
0x1FFF FFFF
0x2FFF FFFF
0x3FFF FFFF
0x4FFF FFFF
0x5FFF FFFF
0x6FFF FFFF
0x7FFF FFFF
0x8FFF FFFF
0x9000 0000
Internal Memories
Chip Select 0
Chip Select 1
Chip Select 2
Chip Select 3
Chip Select 4
Chip Select 5
Chip Select 6
Chip Select 7
Peripherals
Undefined
(Abort)
SAM7SE512/256/32
External
Interface
Bus
EBI
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