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ATMEGA644-20MU on a board, in 3D

ATMEGA644-20MU

Microchip Technology

10bit 2.7V~5.5V 20MHz 32 32KB AVR FLASH VQFN-44-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHS

Extended
DatasheetJLCPCBLCSCmicrochip/ATMEGA644-20MU
Category
Microcontrollers (MCU, MPU, SOC)
Package
VQFN-44-EP(7x7)
Pins
45

Overview

The ATMEGA644-20MU is a microcontroller made by Microchip Technology in a VQFN-44-EP(7x7) package with 45 pins. 10bit 2.7V~5.5V 20MHz 32 32KB AVR FLASH VQFN-44-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (MCU_Microchip_ATmega:ATmega644-20M, from KiCad's library) and its footprint (Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C1339278).

Symbol

PB51PB62PB73RESET4VCC5GND6XTAL27XTAL18PD09PD110PD211PD312PD413PD514PD615PD716PC019PC120PC221PC322PC423PC524PC625PC726AVCC27AREF29PA730PA631PA532PA433PA334PA235PA136PA037PB040PB141PB242PB343PB444
MCU_Microchip_ATmega:ATmega644-20MFrom KiCad's library

Footprint

45
Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mmFrom KiCad's library

Parameters

7
ADC (Bit)
10bit
CPU Core
AVR
CPU Maximum Speed
20MHz
Number of I/O
32
Program Memory Type
FLASH
Program Storage Size
32KB
Voltage - Supply
2.7V~5.5V

Order codes

1

Pinout

45
The pins of the ATMEGA644-20MU
PinNameType
1PB5Input/output
2PB6Input/output
3PB7Input/output
4RESETInput
5VCCPower in
6GNDPower in
7XTAL2Output
8XTAL1Input
9PD0Input/output
10PD1Input/output
11PD2Input/output
12PD3Input/output
13PD4Input/output
14PD5Input/output
15PD6Input/output
16PD7Input/output
17VCCPassive
18GNDPassive
19PC0Input/output
20PC1Input/output
21PC2Input/output
22PC3Input/output
23PC4Input/output
24PC5Input/output
25PC6Input/output
26PC7Input/output
27AVCCPower in
28GNDPassive
29AREFPassive
30PA7Input/output
31PA6Input/output
32PA5Input/output
33PA4Input/output
34PA3Input/output
35PA2Input/output
36PA1Input/output
37PA0Input/output
38VCCPassive
39GNDPassive
40PB0Input/output
41PB1Input/output
42PB2Input/output
43PB3Input/output
44PB4Input/output
45GNDPassive

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Questions

Is there a KiCad symbol and footprint for the ATMEGA644-20MU?

Yes. The symbol is MCU_Microchip_ATmega:ATmega644-20M and the footprint Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the ATMEGA644-20MU?

VQFN-44-EP(7x7), with 45 pins. Its footprint is drawn on this page.

Where is the ATMEGA644-20MU datasheet?

Microchip Technology publishes it: the Datasheet link on this page opens it.

Where can I order the ATMEGA644-20MU?

JLCPCB lists it as part C1339278, with 0 in stock; the sellers' links on this page open their listings.

What can replace the ATMEGA644-20MU?

Parts like it in the library: the ATMEGA324A-MU by Microchip Technology, the ATMEGA324PA-MU by Microchip Technology, the ATXMEGA32A4U-MH by Microchip Technology and the ATXMEGA64D4-MH by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Parts like it

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