Microchip ATMEGA644A-AU, 8 bit AVR, megaAVR Microcontroller, 20 MHz, 64kB FLASH, 44-Pin TQFP

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TWD166.00

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TWD174.30

(inc. GST)

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Packaging Options:
RS Stock No.:
131-0316
Mfr. Part No.:
ATMEGA644A-AU
Manufacturer:
Microchip
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Brand

Microchip

Series

megaAVR

Product Type

Microcontroller

Package Type

TQFP

Mount Type

Surface

Pin Count

44

Device Core

AVR

Data Bus Width

8bit

Interface Type

SPI, USART

Program Memory Size

64kB

Maximum Clock Frequency

20MHz

RAM Size

4kB

Maximum Supply Voltage

5.5V

Number of Programmable I/Os

32

Minimum Operating Temperature

-40°C

Analogue Comparators

1

Maximum Operating Temperature

85°C

Length

10.1mm

Height

1.05mm

Width

10.1 mm

Standards/Approvals

No

Minimum Supply Voltage

1.8V

Distrelec Product Id

301-13-662

Number of Timers

2

ADCs

8 x 10 Bit

Instruction Set Architecture

RISC

Automotive Standard

No

Program Memory Type

FLASH

The Microchip ATmega48PA CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. It operates on 1.8V to 5.5V voltage range. The AVR core combines a rich instruction set with 32 general purpose working registers. It features 64Kbytes of in-system programmable flash with read-while-write capabilities, 2Kbytes EEPROM, 4Kbytes SRAM, 32 general purpose I/O lines, 32 general purpose working registers, a real-time counter, three flexible timer/counters with compare modes and PWM, two USARTs, a byte-oriented Two-Wire serial interface, an 8-channel 10-bit A/D converter with optional differential input stage with programmable gain, programmable watchdog timer with internal oscillator, SPI serial port, a JTAG (IEEE® 1149.1 compliant) test interface for on-chip debugging and programming, and six software selectable power saving modes.

Up to 20MIPS throughput at 20MHz

On-chip 2-cycle multiplier

Programming Lock for Software Security

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

Master/Slave SPI Serial Interface

Programmable Watchdog Timer with Separate On-chip Oscillator

On-chip Analog Comparator

Interrupt and Wake-up on Pin Change

Power-on Reset and Programmable Brown-out Detection

Internal Calibrated RC Oscillator

External and Internal Interrupt Sources

44-lead TQFP package

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