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Product Descriptions

Atmel’s SAM7S is a series of low pincount Flash microcontrollers 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 (except for the  SAM7S32 and SAM7S16), and a complete set of system functions minimizing the number of external components.  The device is an ideal migration path for 8-bit microcontroller users looking for additional performance and  extended memory.

The embedded Flash memory can be programmed in-system via the JTAG-ICE interface or via a parallel interface  on a production programmer prior to mounting. Built-in lock bits and a security bit protect the firmware from accidental overwrite and preserves its confidentiality.

The SAM7S Series system controller includes a reset controller capable of managing the power-on sequence of  the microcontroller and the complete system. Correct device operation can be monitored by a built-in brownout  detector and a watchdog running off an integrated RC oscillator.

The SAM7S Series are general-purpose microcontrollers. Their integrated USB Device port makes them ideal devices  for peripheral applications requiring connectivity to a PC or cellular phone. Their aggressive price point and high level of  integration pushes their scope of use far into the cost-sensitive, high-volume consumer market.

Product Features

? 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 (SAM7S512) Organized in Two Contiguous Banks of 1024 Pages of 256  Bytes (Dual Plane)  

– 256 Kbytes (SAM7S256) Organized in 1024 Pages of 256 Bytes (Single Plane)  

– 128 Kbytes (SAM7S128) Organized in 512 Pages of 256 Bytes (Single Plane)  

– 64 Kbytes (SAM7S64) Organized in 512 Pages of 128 Bytes (Single Plane)  

– 32 Kbytes (SAM7S321/32) Organized in 256 Pages of 128 Bytes (Single Plane) 

– 16 Kbytes (SAM7S161/16) Organized in 256 Pages of 64 Bytes (Single Plane)  

– 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 Write Cycles, 10-year Data Retention Capability, Sector Lock Capabilities, Flash  Security Bit  

– Fast Flash Programming Interface for High Volume Production 

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

– 64 Kbytes (SAM7S512/256) 

– 32 Kbytes (SAM7S128) 

– 16 Kbytes (SAM7S64) 

– 8 Kbytes (SAM7S321/32) 

– 4 Kbytes (SAM7S161/16) 

? Memory Controller (MC) 

– Embedded Flash Controller, Abort Status and Misalignment Detection 

? Reset Controller (RSTC) 

– Based on Power-on Reset and Low-power Factory-calibrated Brown-out 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) 

– Software 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 (SAM7S512/256/128/64/321/161) or One (SAM7S32/16) External Interrupt Source(s)  and One Fast Interrupt Source, Spurious Interrupt Protected

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