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Atmel Electronic Components Datasheet

ATmega644A Datasheet

8-bit Atmel Microcontroller

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ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P
8-bit Atmel Microcontroller with 16/32/64/128K Bytes
In-System Programmable Flash
DATASHEET
Features
High-performance, low-power 8-bit Atmel® AVR® Microcontroller
Advanced RISC architecture
̶ 131 powerful Instructions – most single-clock cycle execution
̶ 32 × 8 general purpose working registers
̶ Fully static operation
̶ Up to 20MIPS throughput at 20MHz
̶ On-chip 2-cycle multiplier
High endurance non-volatile memory segments
̶ 16/32/64/128KBytes of In-System Self-programmable Flash program memory
̶ 512/1K/2K/4KBytes EEPROM
̶ 1/2/4/16KBytes 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
Atmel 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 Prescalers and Compare Modes
̶ One/two 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
Differential mode with selectable gain at 1×, 10× or 200×
̶ Byte-oriented Two-wire Serial Interface
̶ Two Programmable Serial USART
̶ Master/Slave SPI Serial Interface
Atmel-8272G-AVR-01/2015


Atmel Electronic Components Datasheet

ATmega644A Datasheet

8-bit Atmel Microcontroller

No Preview Available !

̶ 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 RC 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
̶ 32 Programmable I/O Lines
̶ 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF
̶ 44-pad DRQFN
– 49-ball VFBGA
Operating Voltages
̶ 1.8 - 5.5V
Speed Grades
̶ 0 - 4MHz @ 1.8 - 5.5V
̶ 0 - 10MHz @ 2.7 - 5.5V
̶ 0 - 20MHz @ 4.5 - 5.5V
Power Consumption at 1MHz, 1.8V, 25C
̶ Active: 0.4mA
̶ Power-down Mode: 0.1µA
̶ Power-save Mode: 0.6µA (Including 32kHz RTC)
Note: 1. See ”Data retention” on page 9 for details.
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P [DATASHEET]
Atmel-8272G-AVR-01/2015
2


Part Number ATmega644A
Description 8-bit Atmel Microcontroller
Maker ATMEL Corporation
PDF Download

ATmega644A Datasheet PDF






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