AT91SAM7S256D-AU Atmel, AT91SAM7S256D-AU Datasheet - Page 2

• Manufacturer Part Number: AT91SAM7S256D-AU
• Description: ARM Microcontrollers - MCU 256K Flash SRAM 64K ARM based MCU
• Manufacturer: Atmel
• Series: SAM7S256r

Specifications of AT91SAM7S256D-AU

• Rohs: yes
• Core: ARM
• Processor Series: AT91SAM
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 55 MHz
• Program Memory Size: 256 KB
• Data Ram Size: 64 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 3 V to 3.6 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: LQFP-64
• Mounting Style: SMD/SMT
• Interface Type: 2-Wire, I2S, SPI, USART
• Length: 7 mm

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Debug Unit (DBGU)
Periodic Interval Timer (PIT)
Windowed Watchdog (WDT)
Real-time Timer (RTT)
One Parallel Input/Output Controller (PIOA)
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).
One Synchronous Serial Controller (SSC)
Two (SAM7S512/256/128/64/321/161) or One (SAM7S32/16) Universal Synchronous/Asynchronous Receiver Transmitters
(USART)
One Master/Slave Serial Peripheral Interface (SPI)
One Three-channel 16-bit Timer/Counter (TC)
One Four-channel 16-bit PWM Controller (PWMC)
One Two-wire Interface (TWI)
One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os
SAM-BA
IEEE
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
– 2-wire UART and Support for Debug Communication Channel interrupt, Programmable ICE Access Prevention
– Mode for General Purpose 2-wire UART Serial Communication
– 20-bit Programmable Counter plus 12-bit Interval Counter
– 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
– 32-bit Free-running Counter with Alarm
– Runs Off the Internal RC Oscillator
– Thirty-two (SAM7S512/256/128/64/321/161) or twenty-one (SAM7S32/16) Programmable I/O Lines Multiplexed with up to
– Input Change Interrupt Capability on Each I/O Line
– Individually Programmable Open-drain, Pull-up resistor and Synchronous Output
– On-chip Transceiver, 328-byte Configurable Integrated FIFOs
– 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
– Individual Baud Rate Generator, IrDA
– Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support
– Full Modem Line Support on USART1 (SAM7S512/256/128/64/321/161)
– 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects
– 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
– Master Mode Support Only, All Two-wire Atmel EEPROMs and I
– Master, Multi-Master and Slave Mode Support, All Two-wire Atmel EEPROMs and I
– Default Boot program
– Interface with SAM-BA Graphic User Interface
– 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
Two Peripheral I/Os
(SAM7S512/256/128/64/321/32)
(SAM7S161/16)
®
1149.1 JTAG Boundary Scan on All Digital Pins
™
Boot Assistant
®
Infrared Modulation/Demodulation
2
C Compatible Devices Supported
SAM7S Series [DATASHEET]
2
C Compatible Devices Supported
6175M–ATARM–26-Oct-12
2