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ATMEGA328-MMH, in 3D

ATMEGA328-MMH

Microchip Technology

-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH VQFN-28(4x4) Microcontrollers (MCU/MPU/SOC) ROHS

Extended
DatasheetJLCPCBLCSCmicrochip/ATMEGA328-MMH
Category
Microcontrollers (MCU, MPU, SOC)
Package
VQFN-28(4x4)
Pins
29

Overview

The ATMEGA328-MMH is a microcontroller made by Microchip Technology in a VQFN-28(4x4) package with 29 pins. -40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH VQFN-28(4x4) Microcontrollers (MCU/MPU/SOC) ROHS.

PCBKit's library has its KiCad symbol (MCU_Microchip_ATmega:ATmega328-MM, from KiCad's library) and its footprint (Package_DFN_QFN:QFN-28-1EP_4x4mm_P0.45mm_EP2.4x2.4mm, from KiCad's library), ready for a KiCad board. 15 are in stock at JLCPCB (part C1337149). 3 open-source boards in 3 repositories on GitHub use it.

Symbol

PD31PD42VCC3GND4XTAL1/PB65XTAL2/PB76PD57PD68PD79PB010PB111PB212PB313PB414PB515AVCC16AREF17PC019PC120PC221PC322PC423PC524RESET/PC625PD026PD127PD228
MCU_Microchip_ATmega:ATmega328-MMFrom KiCad's library

Footprint

29
Package_DFN_QFN:QFN-28-1EP_4x4mm_P0.45mm_EP2.4x2.4mmFrom KiCad's library

Parameters

12
ADC (Bit)
10bit
CPU Core
AVR
CPU Maximum Speed
20MHz
Core Size
8 Bit
EEPROM
1KB
Number of I/O
23
Operating Temperature
-40℃~+85℃
Oscillator Type
Built-in
Program Memory Type
FLASH
Program Storage Size
32KB
RAM Size
2KB
Voltage - Supply
1.8V~5.5V

Order codes

2

Pinout

29
The pins of the ATMEGA328-MMH
PinNameType
1PD3Input/output
2PD4Input/output
3VCCPower in
4GNDPower in
5XTAL1/PB6Input/output
6XTAL2/PB7Input/output
7PD5Input/output
8PD6Input/output
9PD7Input/output
10PB0Input/output
11PB1Input/output
12PB2Input/output
13PB3Input/output
14PB4Input/output
15PB5Input/output
16AVCCPower in
17AREFPassive
18GNDPassive
19PC0Input/output
20PC1Input/output
21PC2Input/output
22PC3Input/output
23PC4Input/output
24PC5Input/output
25RESET/PC6Input/output
26PD0Input/output
27PD1Input/output
28PD2Input/output
29GNDPassive

Open-source boards using it

All 3

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Questions

Is there a KiCad symbol and footprint for the ATMEGA328-MMH?

Yes. The symbol is MCU_Microchip_ATmega:ATmega328-MM and the footprint Package_DFN_QFN:QFN-28-1EP_4x4mm_P0.45mm_EP2.4x2.4mm, both drawn on this page. PCBKit places them on a board for you when you design with it.

What package is the ATMEGA328-MMH?

VQFN-28(4x4), with 29 pins. Its footprint is drawn on this page.

Where is the ATMEGA328-MMH datasheet?

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

Where can I order the ATMEGA328-MMH?

JLCPCB lists it as part C1337149, with 15 in stock; the sellers' links on this page open their listings.

What can replace the ATMEGA328-MMH?

Parts like it in the library: the ATMEGA168PA-MMH by Microchip Technology, the ATMEGA88PA-MMN by Microchip Technology, the ATMEGA328P-MMHR by Microchip Technology and the ATMEGA168A-MMH by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.

Which open-source boards use the ATMEGA328-MMH?

3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.

Parts like it

8