ATtiny424/426/427 ATtiny824/826/827 tinyAVR 2 Family Introduction The ATtiny424/426/427 and ATtiny824/826/827 microcontrollers of the tinyAVR 2 family are using the AVR CPU with hardware multiplier, running at up to 20 MHz, with 4/8 KB Flash, 512B/1 KB of SRAM, and 128B of EEPROM available in a 14-, 20-, and 24-pin package. The family uses the latest technologies from Microchip with a flexible and low-power architecture, including an Event System, advanced digital peripherals, and accurate analog features such as a 12-bit differential ADC with Programmable Gain Amplifier(PGA). tinyAVR 2 Family Overview The figure below shows the tinyAVR 2 family devices, laying out pin count variants and memory sizes. Vertical migration is possible without code modification, as these devices are fully pin and feature compatible Horizontal migration to the left reduces the pin count and, therefore, the available features Figure 1.tinyAVR 2 Family Overview Devices described in this data sheet Devices described in other data sheets Flash 32 KB ATtiny3224 ATtiny3226 ATtiny3227 16 KB ATtiny1624 ATtiny1626 ATtiny1627 ATtiny824 ATtiny826 ATtiny827 8 KB ATtiny424 ATtiny426 ATtiny427 4 KB Pins 14 20 24 Devices with different flash memory sizes typically also have different SRAM and EEPROM. The name of a device in the tinyAVR 2 family is decoded as follows: Preliminary Datasheet DS40002311A-page 1 2021 Microchip Technology Inc. ATtiny424/426/427 ATtiny824/826/827 Figure 2.tinyAVR 2 Family Device Designations AT tiny 827 - MUR - VAO Variant Suffix AVR product family VAO = Automotive Blank = Standard Flash size in KB Carrier Type Family number R = Tape & Reel Blank = Tube or Tray Pin count 7=24 pins Temperature Range 6=20 pins U = -40C to +85C 4=14 pins Package Type F = -40C to +125C M=VQFN S=SOIC300 SS=SOIC150 X=TSSOP, SSOP Note: Tape and Reel identifier only appears in the catalog part number description. This identifier is used for ordering purposes. Check with your Microchip Sales Office for package availability with the Tape and Reel option. Note: The VAO variants have been designed, manufactured, tested, and qualified in accordance with AEC-Q100 requirements for automotive applications. These products may use a different package than non-VAO parts and can have additional specifications in their Electrical Characteristics. Memory Overview The following table shows the memory overview of the entire family, but further documentation describes only the ATtiny424/426/427 and ATtiny824/826/827 devices. Table 1.Memory Overview Device ATtiny424 ATtiny824 ATtiny1624 ATtiny3224 ATtiny426 ATtiny826 ATtiny1626 ATtiny3226 ATtiny427 ATtiny827 ATtiny1627 ATtiny3227 Flash Memory 4 KB 8 KB 16 KB 32 KB SRAM 512B 1 KB 2 KB 3 KB EEPROM 128B 128B 256B 256B User Row 32B 32B 32B 32B Peripheral Overview Table 2.Peripheral Overview Device ATtiny424 ATtiny426 ATtiny427 ATtiny824 ATtiny826 ATtiny827 Pins 14 20 24 Package SOIC, TSSOP SOIC, VQFN SSOP,VQFN Maximum frequency (MHz) 20 20 20 General purpose I/O 12 18 22 PORT PA 7:0 PA 7:0 PA 7:0 PB 3:0 PB 5:0 PB 7:0 PC 3:0 PC 5:0 DS40002311A-page 2 Preliminary Datasheet 2021 Microchip Technology Inc.