SAM7S256_14 Datasheet, PDF (2/775 Pages) ATMEL Corporation – ARM-based Flash MCU

• 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
– I²S 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)
– Master Mode Support Only, All Two-wire Atmel EEPROMs and I²C Compatible Devices Supported
(SAM7S512/256/128/64/321/32)
– Master, Multi-Master and Slave Mode Support, All Two-wire Atmel EEPROMs and I²C 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]
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6175M–ATARM–26-Oct-12