

Overview
The ATTINY84A-SSU is a microcontroller made by Microchip Technology in a SOIC-14 package with 14 pins. -40℃~+85℃ 1.8V~5.5V 10bit 12 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH SOIC-14 Microcontrollers (MCU/MPU/SOC) ROHS.
PCBKit's library has its KiCad symbol (MCU_Microchip_ATtiny:ATtiny84A-SS, from KiCad's library) and its footprint (Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, from KiCad's library), ready for a KiCad board. 174 are in stock at JLCPCB (part C144333). 22 open-source boards in 10 repositories on GitHub use it.
Symbol
Footprint
Parameters
13- ADC (Bit)
- 10bit
- CPU Core
- AVR
- CPU Maximum Speed
- 20MHz
- Core Size
- 8 Bit
- EEPROM
- 512Byte
- Features
- Undervoltage detection (BOR/LVD/LVR/LVI)
- Number of I/O
- 12
- Operating Temperature
- -40℃~+85℃
- Oscillator Type
- Built-in
- Program Memory Type
- FLASH
- Program Storage Size
- 8KB
- RAM Size
- 512Byte
- Voltage - Supply
- 1.8V~5.5V
Order codes
2- ATTINY84A-SSULCSC C144333
- ATTINY84A-SSURLCSC C220597
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | VCC | Power in |
| 2 | XTAL1/PB0 | Input/output |
| 3 | XTAL2/PB1 | Input/output |
| 4 | RESET/PB3 | Input/output |
| 5 | PB2 | Input/output |
| 6 | PA7 | Input/output |
| 7 | PA6 | Input/output |
| 8 | PA5 | Input/output |
| 9 | PA4 | Input/output |
| 10 | PA3 | Input/output |
| 11 | PA2 | Input/output |
| 12 | PA1 | Input/output |
| 13 | AREF/PA0 | Input/output |
| 14 | GND | Power in |
Open-source boards using it
All 22- 2 layers85 × 54 mm

- 2 layers151.5 × 25.4 mm

- 2 layers43.1 × 63.6 mm

Wenk sao
ShawnHymel/wenk-sao
Wenk SAO ======== Wenk Shitty Add-On to be used as a training tool for the "Microcontrollers the Hard Way" workshop. See Documentation/Worksheet and Documentation/Slides for more information.
27 parts5 - 2 layers68.4 × 68.6 mm

- 2 layers127 × 76.2 mm

JakeBadge
s7a73farm/s7a73farm_Party_Badge_DC26
s7a73farm party badge for Defcon 26. Code and Kicad files
44 parts2 - 2 layers26.1 × 33.7 mm

- 2 layers50.2 × 22.6 mm

Dog collar light
mattinglot/dog-collar-light
This is the LED dog collar light PCB and firmware that I built for my dog Joey and a few of his friends.
25 parts1 - 2 layers60.7 × 35.3 mm

LEDtester
AlanFord/LEDtester
A handy little AVR-based LED Tester with a user-controlled current source
25 parts
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<iframe src="https://pcbkit.io/embed/parts/microchip/ATTINY84A-SSU" title="ATTINY84A-SSU in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/microchip/ATTINY84A-SSU.jpg" alt="ATTINY84A-SSU" width="1200" height="900">[](https://pcbkit.io/parts/microchip/ATTINY84A-SSU)Questions
Is there a KiCad symbol and footprint for the ATTINY84A-SSU?
Yes. The symbol is MCU_Microchip_ATtiny:ATtiny84A-SS and the footprint Package_SO:SOIC-14_3.9x8.7mm_P1.27mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the ATTINY84A-SSU?
SOIC-14, with 14 pins. Its footprint is drawn on this page.
Where is the ATTINY84A-SSU datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the ATTINY84A-SSU?
JLCPCB lists it as part C144333, with 174 in stock; the sellers' links on this page open their listings.
What can replace the ATTINY84A-SSU?
Parts like it in the library: the PY32F002BD15S6TU by PUYA, the PIC16F1503-I/SL by Microchip Technology, the PIC16F1824-I/SL by Microchip Technology and the PIC16F676-I/SL 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-SSU?
22 boards in 10 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
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