Microchip Technology ATMEGA645P-MU

Overview

The ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, this microcontroller achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

Features

• High Performance, Low Power AVR® 8-Bit Microcontroller
• Advanced RISC Architecture
– 130 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz (ATmega165PA/645P)
– Up to 20 MIPS Throughput at 20 MHz
(ATmega165A/325A/325PA/645A/3250A/3250PA/6450A/6450P)
– On-Chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments
– In-System Self-programmable Flash Program Memory
• 16K Bytes (ATmega165A/ATmega165PA)
• 32K Bytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
• 64K Bytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P)
– EEPROM
• 512 Bytes (ATmega165A/ATmega165PA)
• 1K bytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
• 2K bytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P)
– Internal SRAM
• 1K Bytes (ATmega165A/ATmega165PA)
• 2K Bytes (ATmega325A/ATmega325PA/ATmega3250A/ATmega3250PA)
• 4K Bytes (ATmega645A/ATmega645P/ATmega6450A/ATmega6450P)
– 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
• JTAG (IEEE std. 1149.1 compliant) Interface
– Boundary-scan Capabilities According to the JTAG Standard
– Extensive On-chip Debug Support
– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• 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
– Four PWM Channels
– 8-channel, 10-bit ADC
– Programmable Serial USART
– Master/Slave SPI Serial Interface
– Universal Serial Interface with Start Condition Detector
– 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
– Five Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, and Standby
• I/O and Packages
– 54/69 Programmable I/O Lines
– 64/100-lead TQFP, 64-pad QFN/MLF and 64-pad DRQFN
• Speed Grade:
– ATmega 165A/165PA/645A/645P: 0 - 16 MHz @ 1.8 - 5.5V
– ATmega325A/325PA/3250A/3250PA/6450A/6450P: 0 - 20MHz @ 1.8 - 5.5V
• Temperature range:
– -40°C to 85°C Industrial
• Ultra-Low Power Consumption (picoPower devices)
– Active Mode:
• 1 MHz, 1.8V: 215 µA
• 32 kHz, 1.8V: 8 µA (including Oscillator)
– Power-down Mode: 0.1 µA at 1.8V
– Power-save Mode: 0.6 µA at 1.8V (Including 32 kHz RTC