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8-bit AVR Microcontrollers ATmega328/P DATASHEET SUMMARYIntroductionThe Atmel picoPower ATmega328/P is a low-power CMOS 8-bitmicrocontroller based on the AVR enhanced RISC architecture. Byexecuting powerful instructions in a single clock cycle, the ATmega328/Pachieves throughputs close to 1MIPS per MHz. This empowers systemdesigner to optimize the device for power consumption versus Performance, Low Power Atmel AVR 8-Bit Microcontroller Family Advanced RISC Architecture 131 Powerful Instructions Most Single Clock Cycle Execution 32 x 8 General Purpose Working Registers Fully Static Operation Up to 20 MIPS Throughput at 20MHz On-chip 2-cycle Multiplier High Endurance Non-volatile Memory Segments 32KBytes of In-System Self-Programmable Flash programMemory 1KBytes EEPROM 2KBytes Internal SRAM Write/Erase Cycles: 10,000 Flash/100,000 EEPROM Data Retention.

4. Block Diagram Figure 4-1. Block Diagram C P U USAR T 0 AD C AD C[ 7:0 ] AR EF R xD0 TxD0 X CK 0 I / O P O R T S D A T A B U S G P I O R [ 2 : 0 ] S R A M OC D

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