2 layers
ATTINY84A-MMH
Microchip TechnologyExtended
1.8V~5.5V 10bit 12 20MHz 8KB AVR VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHS
- Part id
- microchip/ATTINY84A-MMH
- Category
- Microcontrollers (MCU, MPU, SOC)
- Package
- VQFN-20-EP(3x3)
- Pins
- 21
- In stock
- 2 at JLCPCB (C1338202)
- Used on
- 3 open-source boards
Overview
The ATTINY84A-MMH is a microcontroller made by Microchip Technology in a VQFN-20-EP(3x3) package with 21 pins. 1.8V~5.5V 10bit 12 20MHz 8KB AVR VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHS.
PCBKit's library has its KiCad symbol (MCU_Microchip_ATtiny:ATtiny84A-MM, from KiCad's library) and its footprint (Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.45mm_EP1.6x1.6mm, from KiCad's library), ready for a KiCad board. 2 are in stock at JLCPCB (part C1338202). 3 open-source boards in 3 repositories on GitHub use it.
Symbol
Footprint
Pinout
21| Pin | Name | Type |
|---|---|---|
| 1 | PA4 | Input/output |
| 2 | PA3 | Input/output |
| 3 | PA2 | Input/output |
| 4 | PA1 | Input/output |
| 5 | AREF/PA0 | Input/output |
| 6 | NC | Not connected |
| 7 | NC | Not connected |
| 8 | GND | Power in |
| 9 | VCC | Power in |
| 10 | NC | Not connected |
| 11 | XTAL1/PB0 | Input/output |
| 12 | XTAL2/PB1 | Input/output |
| 13 | RESET/PB3 | Input/output |
| 14 | PB2 | Input/output |
| 15 | PA7 | Input/output |
| 16 | PA6 | Input/output |
| 17 | NC | Not connected |
| 18 | NC | Not connected |
| 19 | NC | Not connected |
| 20 | PA5 | Input/output |
| 21 | GND | Passive |
Open-source boards using it
3- 2 layers35 × 43 mm
- 2 layers11.5 × 16.5 mm
Parts like it
5
ATTINY44A-MMH
VQFN-20-40℃~+85℃ 1.8V~5.5V 10bit 12 20MHz 256Byte 256Byte 4KB 8 Bit AVR Built-in FLASH VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY24A-MMH
VQFN-20VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY24A-MMHR
VQFN-20-EP(3x3)-40℃~+85℃ 1.8V~5.5V 10bit 12 128Byte 128Byte 20MHz 2KB 8 Bit AVR Built-in FLASH VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY441-MMHR
VQFN-20-EP(3x3)-40℃~+85℃ 1.7V~5.5V 10bit 12 16MHz 256Byte 256Byte 4KB 8 Bit AVR Built-in FLASH VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY84A-MMHR
VQFN-20-EP(3x3)-40℃~+85℃ 1.8V~5.5V 10bit 12 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH VQFN-20-EP(3x3) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
Questions
Is there a KiCad symbol and footprint for the ATTINY84A-MMH?
Yes. The symbol is MCU_Microchip_ATtiny:ATtiny84A-MM and the footprint Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.45mm_EP1.6x1.6mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the ATTINY84A-MMH?
VQFN-20-EP(3x3), with 21 pins. Its footprint is drawn on this page.
Where is the ATTINY84A-MMH datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the ATTINY84A-MMH?
JLCPCB lists it as part C1338202, with 2 in stock; the sellers' links on this page open their listings.
What can replace the ATTINY84A-MMH?
Parts like it in the library: the ATTINY44A-MMH by Microchip Technology, the ATTINY24A-MMH by Microchip Technology, the ATTINY24A-MMHR by Microchip Technology and the ATTINY441-MMHR by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the ATTINY84A-MMH?
3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.