Does anyone have information on the ATtiny424?

[Parkman29]

I am using it and it has all the specs I need for what I am using it for, but I don't have a big enough brain to really understand the datasheet. I basically need to know how to connect up an SPI device and an I2C device.

 

ATtiny: https://www.mouser.com/ProductDetail/Microchip-Technology/ATTINY424-SSU?qs=pUKx8fyJudAN08X1dMxSgw%3D%3D

SPI Device: https://www.e-paper-display.com/products_detail/productId=403.html

I2C Device: https://uk.farnell.com/microchip/24lc128-i-sn/serial-eeprom-128kbit-400khz-soic/dp/9757937

[mariushm]

Page 18 in the datasheet : https://eu.mouser.com/datasheet/2/268/ATtiny424_426_427_824_826_827_DataSheet_DS40002311-2887739.pdf

 

Your ATTiny424 is a SOIC4 part, so you need to look at the 4th column.

 

So

 

SPI (MOSI, MISO, SCK)  : pins 11,12, 13  .  Alternative location 14, 13, 12 (see note 4). See PORTMUX in datasheet, page 139. 

SS (select device) is only on pin 2 on SOIC14, it's optional for SPI anyway and you have only one SPI device so it doesn't matter.

I2C (SDA, SCL)  : pins 8, 9

 

See chapter 25 (page 324) for SPI information. See chapter 26 (page 339) for TWI (I2C is patented/copyrighted, so they use Two-Wire Interface instead)

 

[Parkman29]

41 minutes ago, mariushm said:

Page 18 in the datasheet : https://eu.mouser.com/datasheet/2/268/ATtiny424_426_427_824_826_827_DataSheet_DS40002311-2887739.pdf

 

Your ATTiny424 is a SOIC4 part, so you need to look at the 4th column.

 

So

 

SPI (MOSI, MISO, SCK)  : pins 11,12, 13  .  Alternative location 14, 13, 12 (see note 4). See PORTMUX in datasheet, page 139. 

SS (select device) is only on pin 2 on SOIC14, it's optional for SPI anyway and you have only one SPI device so it doesn't matter.

I2C (SDA, SCL)  : pins 8, 9

 

See chapter 25 (page 324) for SPI information. See chapter 26 (page 339) for TWI (I2C is patented/copyrighted, so they use Two-Wire Interface instead)

 

Dude thank you so much!