AT91SAM7X256B-AU Atmel, AT91SAM7X256B-AU Datasheet - Page 683

• 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

6120H–ATARM–17-Feb-09
26 Debug Unit (DBGU) .............................................................................. 205
27 Parallel Input/Output Controller (PIO) ................................................ 229
28 Serial Peripheral Interface (SPI) ......................................................... 255
29 Two-wire Interface (TWI) ...................................................................... 281
25.4
25.5
25.6
25.7
25.8
25.9
26.1
26.2
26.3
26.4
26.5
27.1
27.2
27.3
27.4
27.5
27.6
28.1
28.2
28.3
28.4
28.5
28.6
28.7
29.1
29.2
29.3
29.4
29.5
29.6
USB Clock Controller .....................................................................................182
Peripheral Clock Controller ............................................................................182
Programmable Clock Output Controller .........................................................183
Programming Sequence ................................................................................183
Clock Switching Details .................................................................................187
Power Management Controller (PMC) User Interface ..................................190
Overview ........................................................................................................205
Block Diagram ...............................................................................................206
Product Dependencies ..................................................................................207
UART Operations ..........................................................................................207
Debug Unit (DBGU) User Interface ..............................................................214
Overview ........................................................................................................229
Block Diagram ...............................................................................................230
Product Dependencies ..................................................................................231
Functional Description ...................................................................................232
I/O Lines Programming Example ...................................................................237
Parallel Input/Output Controller (PIO) User Interface ....................................238
Overview ........................................................................................................255
Block Diagram ...............................................................................................256
Application Block Diagram .............................................................................256
Signal Description .........................................................................................257
Product Dependencies ..................................................................................257
Functional Description ...................................................................................258
Serial Peripheral Interface (SPI) User Interface ............................................267
Overview ........................................................................................................281
Block Diagram ...............................................................................................281
Application Block Diagram .............................................................................282
Product Dependencies ..................................................................................282
Functional Description ...................................................................................283
TWI User Interface ........................................................................................294
AT91SAM7X512/256/128 Preliminary
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