![AT89 series (Intel 8051 architecture) AT90, ATtiny, ATmega, ATxmega series (AVR architecture) (Atmel Norway design) AT91SAM (ARM architecture) AVR32 (32-bit AVR architecture) (Atmel Norway design) AT89 series (Intel 8051 architecture) AT90, ATtiny, ATmega, ATxmega series (AVR architecture) (Atmel Norway design) AT91SAM (ARM architecture) AVR32 (32-bit AVR architecture) (Atmel Norway design)](https://onlinetps.com/shop/image/cache/catalog/ItemImages/catagory%20images/Intel%20Atmel%208051%20Family-375x200w.jpg)
AT89 series (Intel 8051 architecture) AT90, ATtiny, ATmega, ATxmega series (AVR architecture) (Atmel Norway design) AT91SAM (ARM architecture) AVR32 (32-bit AVR architecture) (Atmel Norway design)
![AT89C4051-12PU MICROCHIP TECHNOLOGY - IC: Mikrocontroller 8051 | Flash: 4kx8bit; SRAM: 128B; 2,7÷6VDC | TME - Elektronik Bauteile AT89C4051-12PU MICROCHIP TECHNOLOGY - IC: Mikrocontroller 8051 | Flash: 4kx8bit; SRAM: 128B; 2,7÷6VDC | TME - Elektronik Bauteile](https://ce8dc832c.cloudimg.io/v7/_cdn_/41/56/80/00/0/550164_1.jpg?width=640&height=480&wat=1&wat_url=_tme-wrk_%2Ftme_new.png&wat_scale=100p&ci_sign=81e0a56070c4e7e0c7c48b70722355d874741ebb)
AT89C4051-12PU MICROCHIP TECHNOLOGY - IC: Mikrocontroller 8051 | Flash: 4kx8bit; SRAM: 128B; 2,7÷6VDC | TME - Elektronik Bauteile
![Siliconinsider on X: "Intel 8051AH (1980) MCS-51 NMOS 8bit microcontroller with 4kB ROM and 128 Bytes RAM. The intel 8051 is possibly one of the most popular microcontroller architecture, with many derivatives Siliconinsider on X: "Intel 8051AH (1980) MCS-51 NMOS 8bit microcontroller with 4kB ROM and 128 Bytes RAM. The intel 8051 is possibly one of the most popular microcontroller architecture, with many derivatives](https://pbs.twimg.com/media/EyOMDQQWgAABX5Q.jpg)