
ATTINY20-UU
Microchip TechnologyExtended
-40℃~+85℃ 1.8V~5.5V 10 10bit 128Byte 12MHz 2KB 8 Bit AVR Built-in FLASH WLCSP-12(1.4x1.6) Microcontrollers (MCU/MPU/SOC) ROHS
- Part id
- microchip/ATTINY20-UU
- Category
- Microcontrollers (MCU, MPU, SOC)
- Package
- WLCSP-12(1.4x1.6)
- Pins
- 12
- In stock
- 0 at JLCPCB (C219130)
- Used on
- 1 open-source board
Overview
The ATTINY20-UU is a microcontroller made by Microchip Technology in a WLCSP-12(1.4x1.6) package with 12 pins. -40℃~+85℃ 1.8V~5.5V 10 10bit 128Byte 12MHz 2KB 8 Bit AVR Built-in FLASH WLCSP-12(1.4x1.6) Microcontrollers (MCU/MPU/SOC) ROHS.
PCBKit's library has its KiCad symbol (MCU_Microchip_ATtiny:ATtiny20-U, from KiCad's library) and its footprint (Package_CSP:WLCSP-12_1.403x1.555mm_Layout6x4_P0.4mm_Stagger, from KiCad's library), ready for a KiCad board. JLCPCB lists it (part C219130). 1 open-source board in 1 repository on GitHub use it.
Symbol
Footprint
Pinout
12| Pin | Name | Type |
|---|---|---|
| A1 | PA4 | Input/output |
| A3 | PA1 | Input/output |
| A5 | PA2 | Input/output |
| B2 | PA6 | Input/output |
| B4 | GND | Power in |
| B6 | VCC | Power in |
| C1 | PA5 | Input/output |
| C3 | PA7 | Input/output |
| C5 | PB1 | Input/output |
| D2 | PB2 | Input/output |
| D4 | RESET/PB3 | Input/output |
| D6 | PB0 | Input/output |
Open-source boards using it
1- 2 layers35.3 × 7.1 mm

Questions
Is there a KiCad symbol and footprint for the ATTINY20-UU?
Yes. The symbol is MCU_Microchip_ATtiny:ATtiny20-U and the footprint Package_CSP:WLCSP-12_1.403x1.555mm_Layout6x4_P0.4mm_Stagger, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the ATTINY20-UU?
WLCSP-12(1.4x1.6), with 12 pins. Its footprint is drawn on this page.
Where is the ATTINY20-UU datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the ATTINY20-UU?
JLCPCB lists it as part C219130, with 0 in stock; the sellers' links on this page open their listings.
Which open-source boards use the ATTINY20-UU?
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.