AT91M55800A-33CJ Atmel, AT91M55800A-33CJ Datasheet - Page 25

• Manufacturer Part Number: AT91M55800A-33CJ
• Description: IC ARM MCU 16BIT 176BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M55800A-33CJ

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 58
• Program Memory Type: ROMless
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 176-LFBGA
• Processor Series: AT91Mx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: EBI, SPI, USART
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 58
• Number Of Timers: 10 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91EB55
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• On-chip Dac: 8 bit, 2 Channel
• Cpu Family: AT91
• Device Core: ARM7TDMI
• Device Core Size: 32b
• Frequency (max): 33MHz
• Program Memory Size: Not Required
• Total Internal Ram Size: 8KB
• # I/os (max): 58
• Number Of Timers - General Purpose: 6
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 2.7V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 176
• Package Type: BGA
• For Use With: AT91EB55 - KIT EVAL FOR ARM AT91M55800A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

11.1
1745F–ATARM–06-Sep-07
External Memory Mapping
The memory map associates the internal 32-bit address space with the external 24-bit address
bus.
The memory map is defined by programming the base address and page size of the external
memories (see EBI User Interface registers EBI_CSR0 to EBI_CSR7). Note that A0 - A23 is only
significant for 8-bit memory; A1 - A23 is used for 16-bit memory.
If the physical memory device is smaller than the programmed page size, it wraps around and
appears to be repeated within the page. The EBI correctly handles any valid access to the mem-
ory device within the page. (See
In the event of an access request to an address outside any programmed page, an Abort signal
is generated. Two types of Abort are possible: instruction prefetch abort and data abort. The cor-
responding exception vector addresses are respectively 0x0000 000C and 0x0000 0010. It is up
to the system programmer to program the error handling routine to use in case of an Abort (see
the ARM7TDMI datasheet for further information).
Figure 11-1. External Memory Smaller than Page Size
Memory
Map
1-Mbyte Device
1-Mbyte Device
1-Mbyte Device
1-Mbyte Device
Figure
11-1.)
Low
Low
Low
Low
Hi
Hi
Hi
Hi
Base + 4M Byte
Base + 3M Byte
Base + 2M Byte
Base + 1M Byte
Base
AT91M5880A
Repeat 3
Repeat 2
Repeat 1
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