AT91SAM7S256-AU

Product Summary

The AT91SAM7S256-AU is a low pincount Flash microcontroller based on the 32-bit ARM RISC processor. It features a high-speed Flash and an SRAM, a large set of peripherals, including a USB 2.0 device, and a complete set of system functions minimizing the number of external components. The AT91SAM7S256-AU is an ideal migration path for 8-bit microcontroller users looking for additional performance and extended memory. It includes a reset controller capable of managing the power-on sequence of the microcontroller and the complete system. The AT91SAM7S256-AU integrated USB Device port makes them ideal devices for peripheral applications requiring connectivity to a PC or cellular phone.

Parametrics

AT91SAM7S256-AU general specifications: (1)Program Memory Size:256KB (256K x 8); (2)RAM Size:64K x 8; (3)Number of I /O:32; (4)Package / Case:64-LQFP; (5)Speed:55MHz; (6)Oscillator Type:Internal; (7)Packaging:Tray; (8)Program Memory Type:FLASH; (9)Core Processor:ARM7; (10)Data Converters:A/D 8x10b; (11)Core Size:16/32-Bit; (12)Operating Temperature:-40℃ to 85℃; (13)supply voltage(Vcc/Vdd):1.65V to 1.95V.

Features

AT91SAM7S256-AU features: (1)High-performance 32-bit RISC Architecture; (2)High-density 16-bit Instruction Set; (3)Leader in MIPS/Watt; (4)EmbeddedICE In-circuit Emulation, Debug Communication Channel Support; (5)Embedded Flash Controller, Abort Status and Misalignment ; (6)Based on Power-on Reset and Low-power Factory-calibrated Brown-out Detector; (7)Provides External Reset Signal Shaping and Reset Source Status; (8)Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one PLL; (9)Software Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and Idle Mode; (10)Three Programmable External Clock Signals; (11)2-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention; (12)Mode for General Purpose 2-wire UART Serial Communication; (13)20-bit Programmable Counter plus 12-bit Interval Counter; (14)12-bit key-protected Programmable Counter; (15)Provides Reset or Interrupt Signals to the System; (16)32-bit Free-running Counter with Alarm; (17)Runs Off the Internal RC Oscillator; (18)Input Change Interrupt Capability on Each I/O Line; (19)Individually Programmable Open-drain, Pull-up resistor and Synchronous Output.

Diagrams