Features
• Core
– ARM
®
Cortex
®
-M3 revision 2.0 running at up to 64 MHz
– Memory Protection Unit (MPU)
– Thumb
®
-2 instruction set
• Pin-to-pin compatible with AT91SAM7S legacy products (64-pin versions), SAM3S4/2/1
products
• Memories
– 512 Kbytes Single Plane (SAM3S8) embedded Flash, 128-bit wide access, memory
accelerator
– 512 Kbytes Dual Plane (SAM3SD8) embedded Flash, 128-bit wide access, memory
accelerator
– 64 Kbytes embedded SRAM
– 16 Kbytes ROM with embedded boot loader routines (UART, USB) and IAP routines
– 8-bit Static Memory Controller (SMC): SRAM, PSRAM, NOR and NAND Flash
support
• System
– Embedded voltage regulator for single supply operation
– Power-on-Reset (POR), Brown-out Detector (BOD) and Watchdog for safe operation
– Quartz or ceramic resonator oscillators: 3 to 20 MHz main power with Failure
Detection and optional low-power 32.768 kHz for RTC or device clock
– RTC with Gregorian and Persian Calendar mode, waveform generation in low-
power modes
– RTC clock calibration circuitry for 32.768 kHz crystal frequency compensation
– High precision 8/12 MHz factory trimmed internal RC oscillator with 4 MHz default
frequency for device startup. In-application trimming access for frequency
adjustment
– Slow Clock Internal RC oscillator as permanent low-power mode device clock
– Two PLLs up to 130 MHz for device clock and for USB
– Temperature Sensor
– Up to 24 peripheral DMA (PDC) channels
• Low Power Modes
– Sleep and Backup modes, down to 1 µA in Backup mode
– Ultra low-power RTC
• Peripherals
– USB 2.0 Device: 12 Mbps, 2668 byte FIFO, up to 8 bidirectional Endpoints. On-Chip
Transceiver
– Up to 3 USARTs with ISO7816, IrDA
®
, RS-485, SPI, Manchester and Modem Mode
– Two 2-wire UARTs
– Up to 2 Two Wire Interface (I2C compatible), 1 SPI, 1 Serial Synchronous Controller
(I2S), 1 High Speed Multimedia Card Interface (SDIO/SD Card/MMC)
– 6 Three-Channel 16-bit Timer/Counter with capture, waveform, compare and PWM
mode. Quadrature Decoder Logic and 2-bit Gray Up/Down Counter for Stepper
Motor
– 4-channel 16-bit PWM with Complementary Output, Fault Input, 12-bit Dead Time
Generator Counter for Motor Control
– 32-bit Real-time Timer and RTC with calendar and alarm features
– Up to 15-channel, 1Msps ADC with differential input mode and programmable gain
stage and auto calibration
– One 2-channel 12-bit 1Msps DAC
– One Analog Comparator with flexible input selection, Selectable input hysteresis
– 32-bit Cyclic Redundancy Check Calculation Unit (CRCCU)
• I/O
– Up to 79 I/O lines with external interrupt capability (edge or level sensitivity),
debouncing, glitch filtering and on-die Series Resistor Termination
– Three 32-bit Parallel Input/Output Controllers, Peripheral DMA assisted Parallel
Capture Mode
• Packages
– 100-lead LQFP, 14 x 14 mm, pitch 0.5 mm/100-ball TFBGA,9x9mm,pitch0.8mm
– 64-lead LQFP, 10 x 10 mm, pitch 0.5 mm/64-pad QFN 9x9 mm, pitch 0.5 mm
AT91SAM
ARM-based
Flash MCU
SAM3S8/SD8
Series
Summary
11090BS–ATARM–22-Oct-13
