AT91SAM7X256B-AU Atmel, AT91SAM7X256B-AU Datasheet - Page 680

• 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

ii
AT91SAM7X512/256/128 Preliminary
9
10 Peripherals ............................................................................................. 31
11 ARM7TDMI Processor Overview .......................................................... 39
12 Debug and Test Features ...................................................................... 45
System Controller .................................................................................. 24
8.5
8.6
8.7
9.1
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
9.10
10.1
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
10.10
10.11
10.12
10.13
10.14
10.15
11.1
11.2
12.1
Embedded Flash .............................................................................................20
Fast Flash Programming Interface ..................................................................22
SAM-BA Boot Assistant ...................................................................................22
Reset Controller ...............................................................................................26
Clock Generator ..............................................................................................27
Power Management Controller ........................................................................28
Advanced Interrupt Controller ..........................................................................28
Debug Unit .......................................................................................................29
Periodic Interval Timer .....................................................................................29
Watchdog Timer ..............................................................................................29
Real-time Timer ...............................................................................................30
PIO Controllers ................................................................................................30
Voltage Regulator Controller ...........................................................................30
User Interface ..................................................................................................31
Peripheral Identifiers ........................................................................................31
Peripheral Multiplexing on PIO Lines ..............................................................32
PIO Controller A Multiplexing ..........................................................................33
PIO Controller B Multiplexing ..........................................................................34
Ethernet MAC ..................................................................................................35
Serial Peripheral Interface ...............................................................................35
Two-wire Interface ...........................................................................................35
USART ............................................................................................................36
Serial Synchronous Controller .........................................................................36
Timer Counter ..................................................................................................36
Pulse Width Modulation Controller ..................................................................37
USB Device Port ..............................................................................................37
CAN Controller ................................................................................................38
Analog-to-Digital Converter .............................................................................38
Overview ..........................................................................................................39
ARM7TDMI Processor .....................................................................................40
Description .......................................................................................................45
6120H–ATARM–17-Feb-09