AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 21

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

7.3
6048B–ATARM–29-Jun-06
External Memories
The AT91SAM7A1 external memories can be relocated in the address space from
0x40000000 to 0x7FFFFFFF. The configuration of the base address and the page size of
each EBI chip select line (NCS[3:0], CS[7:6]) is done through the Advanced Memory Control-
ler (AMC) registers.
It is to be noted that the two most significant bits of the base address are fixed to 01b allocat-
ing these memories in the second of the four Gbytes memory spaces.
The maximum external memory space is 16 Mbytes (i.e. CS[7:6] used as address lines).
Table 7-3.
Memory Space
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
0x(01XX
b
b
b
b
b
b
b
b
b
b
b
b
)XXFFFFF
)XX00000
)X1FFFFF
)XX00000
)X3FFFFF
)XX00000
)X3FFFFF
)XX00000
)X3FFFFF
)XX00000
)X3FFFFF
)XX00000
External Memory
Up to 1 Mbytes
Up to 2 Mbytes
Up to 4 Mbytes
Up to 4 Mbytes
Up to 4 Mbytes
Up to 4 Mbytes
Size
External memory on NCS3
External memory on NCS2
External memory on NCS1
External memory on NCS0
External memory on CS7
External memory on CS6
AT91SAM7A1
Application
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