ATMega328P (AVR 28 Pin 20MHz 32K)

The ATmega48A/PA/88A/PA/168A/PA/328/P is a low power, CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to optimize power consumption versus processing speed.

Features
High Performance, Low Power AVR 8-Bit Microcontroller Family
Advanced RISC Architecture
131 Powerful Instructions – Most Single Clock Cycle Execution
32 x 8 General Purpose Working Registers
Up to 20 MIPS Throughput at 20MHz
On-chip 2-cycle Multiplier
High Endurance Non-volatile Memory Segments
4/8/16/32KBytes of In-System Self-Programmable Flash program memory
256/512/512/1KBytes EEPROM
512/1K/1K/2KBytes Internal SRAM
Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
Data retention: 20 years at 85°C/100 years at 25°C(1)
Optional Boot Code Section with Independent Lock Bits
In-System Programming by On-chip Boot Program
True Read-While-Write Operation
Programming Lock for Software Security
QTouch® library support
Capacitive touch buttons, sliders and wheels
QTouch and QMatrix™ acquisition
Up to 64 sense channels
Peripheral Features
Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
Real Time Counter with Separate Oscillator
Six PWM Channels
8-channel 10-bit ADC in TQFP and QFN/MLF package
Temperature Measurement
Channel 10-bit ADC in PDIP Package
Temperature Measurement
Programmable Serial USART
Master/Slave SPI Serial Interface
Byte-oriented 2-wire Serial Interface (Philips I2C compatible)
Programmable Watchdog Timer with Separate On-chip Oscillator
On-chip Analog Comparator
Interrupt and Wake-up on Pin Change
Special Microcontroller Features
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated Oscillator
External and Internal Interrupt Sources
Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
I/O and Packages
23 Programmable I/O Lines
28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
Operating Voltage: 1.8 – 5.5V
Temperature Range: -40°C to 85°C
Speed Grade: 0 – 4MHz@1.8 – 5.5V, 0 – 10MHz@2.7 – 5.5.V, 0 – 20MHz @ 4.5 – 5.5V
Power Consumption at 1MHz 1.8V, 25°C
Active Mode: 0.2mA
Power-down Mode: 0.1µA
Power-save Mode: 0.75µA (Including 32kHz RTC)
Pin Configuration
Manufacturer: Microchip
Brand: Microchip Technology
Product Category: 8-bit Microcontrollers
Core: AVR
Program Memory Type: Flash
Program Memory Size: 32 kB
Data RAM Size: 2 kB
Package/Case: PDIP-28
Maximum Clock Frequency: 20 MHz
ADC Resolution: 10 bit
Number of I/Os: 23 I/O
Supply Voltage – Min: 1.8 V
Supply Voltage – Max: 5.5 V
Mounting Style: Through Hole
Data Bus Width: 8 bit
Minimum Operating Temperature: – 40 C
Maximum Operating Temperature: + 85 C
Data RAM Type: SRAM
Data ROM Size: 1 kB
Data ROM Type: EEPROM
Interface Type: I2C, SPI, USART
Number of ADC Channels: 6 Channel
Number of Timers/Counters: 3 Timer
Processor Series: megaAVR