AT91SAM7X256B-AU Atmel, AT91SAM7X256B-AU Datasheet - Page 140

• Manufacturer Part Number: AT91SAM7X256B-AU
• Description: IC MCU 256KB FLASH 100LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7X256B-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: CAN, Ethernet, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 62
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 64K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 55 MHz
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 62
• Interface Type: CAN/Ethernet/SPI/I2S/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Controller Family/series: AT91SAM7xxxxx
• No. Of I/o's: 62
• Ram Memory Size: 64KB
• Cpu Speed: 55MHz
• No. Of Timers: 1
• Rohs Compliant: Yes
• Cpu Family: 91S
• Device Core Size: 32b
• Frequency (max): 55MHz
• Total Internal Ram Size: 64KB
• # I/os (max): 62
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Supply Voltage (max): 1.95/3.6V
• Operating Supply Voltage (min): 1.65/3V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

21.5
140
Hardware and Software Constraints
AT91SAM7X512/256/128 Preliminary
Table 21-4.
Table 21-5.
Device
AT91SAM7X512
AT91SAM7X256
AT91SAM7X128
Peripheral
DBGU
DBGU
• SAM-BA boot copies itself in the SRAM and uses a block of internal SRAM for variables and
• USB requirements:
stacks. The remaining available size for the user code is 122880 bytes forAT91SAM7x512,
57344 bytes for AT91SAM7X256 and 24576 bytes for AT91SAM7X128.
– pull-up on DDP
– 18.432 MHz Quartz
User Area Addresses
Pins Driven during Boot Program Execution
Start Address
0x202000
0x202000
0x202000
Pin
DRXD
DTXD
End Address
0x220000
0x210000
0x208000
Size (bytes)
122880
57344
24576
PIO Line
6120H–ATARM–17-Feb-09
PA27
PA28