AT91SAM ARM-based Flash MCU SAM7S512 SAM7S256 SAM7S128 SAM7S64 SAM7S321 SAM7S32 SAM7S161 SAM7S16 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 6175MATARM26-Oct-12 Debug Unit (DBGU) 2-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention Mode for General Purpose 2-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 Provides Reset or Interrupt Signals to the System Counter May Be Stopped While the Processor is in Debug State or in Idle Mode Real-time Timer (RTT) 32-bit Free-running Counter with Alarm Runs Off the Internal RC Oscillator One Parallel Input/Output Controller (PIOA) Thirty-two (SAM7S512/256/128/64/321/161) or twenty-one (SAM7S32/16) Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os Input Change Interrupt Capability on Each I/O Line Individually Programmable Open-drain, Pull-up resistor and Synchronous Output Eleven (SAM7S512/256/128/64/321/161) or Nine (SAM7S32/16) Peripheral DMA Controller (PDC) Channels One USB 2.0 Full Speed (12 Mbits per Second) Device Port (Except for the SAM7S32/16). On-chip Transceiver, 328-byte Configurable Integrated FIFOs One Synchronous Serial Controller (SSC) Independent Clock and Frame Sync Signals for Each Receiver and Transmitter IS Analog Interface Support, Time Division Multiplex Support High-speed Continuous Data Stream Capabilities with 32-bit Data Transfer Two (SAM7S512/256/128/64/321/161) or One (SAM7S32/16) Universal Synchronous/Asynchronous Receiver Transmitters (USART) Individual Baud Rate Generator, IrDA Infrared Modulation/Demodulation Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support Full Modem Line Support on USART1 (SAM7S512/256/128/64/321/161) One Master/Slave Serial Peripheral Interface (SPI) 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects One Three-channel 16-bit Timer/Counter (TC) Three External Clock Input and Two Multi-purpose I/O Pins per Channel (SAM7S512/256/128/64/321/161) One External Clock Input and Two Multi-purpose I/O Pins for the first Two Channels Only (SAM7S32/16) Double PWM Generation, Capture/Waveform Mode, Up/Down Capability One Four-channel 16-bit PWM Controller (PWMC) One Two-wire Interface (TWI) 2 Master Mode Support Only, All Two-wire Atmel EEPROMs and I C Compatible Devices Supported (SAM7S512/256/128/64/321/32) 2 Master, Multi-Master and Slave Mode Support, All Two-wire Atmel EEPROMs and I C Compatible Devices Supported (SAM7S161/16) One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os SAM-BA Boot Assistant Default Boot program Interface with SAM-BA Graphic User Interface IEEE 1149.1 JTAG Boundary Scan on All Digital Pins 5V-tolerant I/Os, including Four High-current Drive I/O lines, Up to 16 mA Each (SAM7S161/16 I/Os Not 5V-tolerant) Power Supplies Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components 3.3V or 1.8V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply 1.8V VDDCORE Core Power Supply with Brown-out Detector SAM7S Series DATASHEET 2 6175MATARM26-Oct-12