AT91SAM7SE256-AU ARM9 MCU NEW AND ORIGINAL

• Incorporates the ARM7TDMI

®

 ARM®

 Thumb

®

 Processor

– High-performance 32-bit RISC Architecture

– High-density 16-bit Instruction Set

– Leader in MIPS/Watt

– EmbeddedICE™

 In-circuit Emulation, Debug Communication Channel Support

• Internal High-speed Flash

– 512 Kbytes, Organized in Two Contiguous Banks of 1024 Pages of 256 Bytes Dual 

Plane (SAM7SE512) 

– 256 Kbytes (SAM7SE256) Organized in One Bank of 1024 Pages of 256 Bytes 

Single Plane (SAM7SE256)

– 32 Kbytes (SAM7SE32) Organized in One Bank of 256 Pages of 128 Bytes Single 

Plane (SAM7SE32)

– Single Cycle Access at Up to 30 MHz in Worst Case Conditions

– Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed

– Page Programming Time: 6 ms, Including Page Auto-erase, Full Erase Time: 15 ms

– 10,000 Erase Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, 

Flash Security Bit

– Fast Flash Programming Interface for High Volume Production

• 32 Kbytes (SAM7SE512/256) or 8 Kbytes (SAM7SE32) of Internal 

High-speed SRAM, Single-cycle Access at Maximum Speed

• One External Bus Interface (EBI)

– Supports SDRAM, Static Memory, Glueless Connection to CompactFlash

®

 and 

ECC-enabled NAND Flash

• Memory Controller (MC)

– Embedded Flash Controller

– Memory Protection Unit

– Abort Status and Misalignment Detection

• Reset Controller (RSTC)

– Based on Power-on Reset Cells and Low-power Factory-calibrated Brownout 

Detector

– Provides External Reset Signal Shaping and Reset Source Status

• Clock Generator (CKGR)

– Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and One PLL

• Power Management Controller (PMC)

– Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and 

Idle Mode

– Three Programmable External Clock Signals

• Advanced Interrupt Controller (AIC)

– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources

– Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt 

Protected

• Debug Unit (DBGU)

– Two-wire UART and Support for Debug Communication Channel interrupt, 

Programmable ICE Access Prevention

– Mode for General Purpose Two-wire UART Serial Communication

• Periodic Interval Timer (PIT)

– 20-bit Programmable Counter plus 12-bit Interval Counter

• Windowed Watchdog (WDT)

– 12-bit key-protected Programmable Counter