AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 21
AT91SAM7A1-AU
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
-
Available stocks
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Manufacturer
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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
21
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