2 layers56.6 × 22.2 mm
Overview
The ATTINY841-MU is a microcontroller made by Microchip Technology in a QFN-20-EP(4x4) package with 21 pins. -40℃~+85℃ 1.7V~5.5V 10bit 12 16MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH QFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHS.
PCBKit's library has its KiCad symbol (MCU_Microchip_ATtiny:ATtiny841-M, from KiCad's library) and its footprint (Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.6x2.6mm, from KiCad's library), ready for a KiCad board. 47 are in stock at JLCPCB (part C2054130). 3 open-source boards in 3 repositories on GitHub use it.
Symbol
Footprint
Parameters
13- ADC (Bit)
- 10bit
- CPU Core
- AVR
- CPU Maximum Speed
- 16MHz
- Core Size
- 8 Bit
- EEPROM
- 512Byte
- Features
- Power-on reset (POR), Undervoltage detection (BOR/LVD/LVR/LVI), Watchdog reset, Built-in general-purpose timer, Programmable watchdog
- 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
- 1.7V~5.5V
Order codes
3- ATTINY841-MURLCSC C2054130
- ATTINY841-MULCSC C614144
- ATTINY841-MURLCSC C614159
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
All 3- 2 layers65 × 56 mm
Toy Ikea MicrowaveController
SkullKill/Toy-Ikea-MicrowaveController-PCB
PCB for Microwave Controller for Ikea Kitchen DUKTIG
73 parts1GPL-3.0 - 2 layers27.9 × 15.2 mm
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Is there a KiCad symbol and footprint for the ATTINY841-MU?
Yes. The symbol is MCU_Microchip_ATtiny:ATtiny841-M and the footprint Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.6x2.6mm, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the ATTINY841-MU?
QFN-20-EP(4x4), with 21 pins. Its footprint is drawn on this page.
Where is the ATTINY841-MU datasheet?
Microchip Technology publishes it: the Datasheet link on this page opens it.
Where can I order the ATTINY841-MU?
JLCPCB lists it as part C2054130, with 47 in stock; the sellers' links on this page open their listings.
What can replace the ATTINY841-MU?
Parts like it in the library: the ATTINY44A-MU by Microchip Technology, the ATTINY84A-MU by Microchip Technology, the ATTINY24A-MF by Microchip Technology and the ATTINY25-20MU by Microchip Technology. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the ATTINY841-MU?
3 boards in 3 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
ATTINY44A-MU
QFN-20-EP(4x4)-40℃~+85℃ 1.8V~5.5V 10bit 12 20MHz 256Byte 256Byte 4KB 8 Bit AVR Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Programmable watchdog、Built-in temperature sensor QFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY84A-MU
QFN-20-EP(4x4)-40℃~+85℃ 1.8V~5.5V 10bit 12 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH VQFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY24A-MF
QFN-20-EP(4x4)-40℃~+125℃ 1.8V~5.5V 10bit 12 128Byte 128Byte 20MHz 2KB 8 Bit AVR Built-in FLASH QFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY25-20MU
QFN-20-EP(4x4)-40℃~+85℃ 10bit 128Byte 128Byte 2.7V~5.5V 20MHz 2KB 6 8 Bit AVR Built-in FLASH QFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY84-20MU
QFN-20-EP(4x4)-40℃~+85℃ 10bit 12 2.7V~5.5V 20MHz 512Byte 512Byte 8 Bit 8KB AVR Built-in FLASH QFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY85-20MUR
QFN-20-EP(4x4)-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH WFQFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY2313A-MU
WFQFN-20-EP(4x4)-40℃~+85℃ 1.8V~5.5V 128Byte 128Byte 18 20MHz 2KB 8 Bit AVR Built-in FLASH WFQFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)ATTINY24A-MU
QFN-20-EP(4x4)-40℃~+85℃ 1.8V~5.5V 10bit 12 128Byte 128Byte 20MHz 2KB 8 Bit AVR Built-in FLASH QFN-20-EP(4x4) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)