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Board Description
– Four 32-bit Battery Backup Registers for a Total of 16 Bytes
– Clock Generator and Power Management Controller
– Advanced Interrupt Controller and Debug Unit
– Periodic Interval Timer, Watchdog Timer and Real-time Timer and Real-time Clock
Reset Controller (RSTC)
– Based on Two Power-on Reset Cells
– Reset Source Identification and Reset Output Control
Shutdown Controller (SHDC)
– Programmable Shutdown Pin Control and Wake-up Circuitry
Clock Generator (CKGR)
– Selectable 32768 Hz Low-power oscillator or Internal Low-power RC Oscillator on Battery
Backup Power Supply, Providing a Permanent Slow Clock
– 12 MHz On-chip Oscillator for Main System Clock and USB Clock
– One PLL up to 240 MHz
– One PLL 480 MHz Optimized for USB HS
Power Management Controller (PMC)
– Very Slow Clock Operating Mode, Software Programmable Power Optimization Capabilities
– Two Programmable External Clock Signals
Advanced Interrupt Controller (AIC)
– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources
– One External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt Protected
Debug Unit (DBGU)
– 2-wire UART and support for Debug Communication Channel
Periodic Interval Timer (PIT)
– 20-bit interval timer plus 12-bit interval counter
Watchdog Timer (WDT)
– Key-protected, Programmable Only Once, Windowed 16-bit Counter Running at Slow Clock
Real-time Timer (RTT)
– 32-bit Free-running Backup Counter Running at Slow Clock with 16-bit Prescaler
Real-time Clock (RTC)
– Time, Date and Alarm 32-bit Parallel Load
– Low Power Consumption
– Programmable Periodic Interrupt
One 6-channel 10-Bit Analog-to-Digital Converter
– Touch Screen Interface Compatible with Industry Standard 4-wire Sensitive Touch Panels
Four 32-bit Parallel Input/Output Controllers (PIOA, PIOB, PIOC and PIOD)
– 118 Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os for 217-ball BGA package
– Input Change Interrupt Capability on Each I/O Line
– Individually Programmable Open-drain, Pull-up resistor and Synchronous Output
24-channel Peripheral DMA Controller (PDC)
One Multimedia Card Interface (MCI)
– SDCard/SDIO 1.0 and MultiMedia Card 3.1 Compliant
3-2
6325C–ATARM–22-Jul-10
AT91SAM9RL-EK Evaluation Board User Guide
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