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Atmel AT91M55800A
The Atmel AT91M55800A is an ARM7TDMI based High-performance 32-bit RISC Microcontroller with Thumb extensions, Fully Programmable External Bus Interface, up to 128MB Address Space, 8 Chip Selects, 8K Bytes Internal RAM, 58 Programmable I/O Lines, 8-level Priority, Individually Maskable, Vectored Interrupt Controller, 7 External interrupts, including a High-priority Low-latency Interrupt Request, 6-channel 16-bit Timer/Counter, 6 External Clock Inputs, 2 Multi-purpose I/O Pins per Chan., 3 USARTs, Master/Slave SPI Interface, Programmable Watchdog Timer, 8-channel Peripheral Data Controller for USARTs and SPIs, 8-channel 10-bit ADC, 2-channel 10-bit DAC, Clock Generator with PLL, Real-time Clock with On-chip 32kHz Oscillator, Advanced Power Management Controller.
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