The AT90S4434-8PI from Microchip Technology is an AVR 90S microcontroller Integrated Circuit with 8-bit architecture, 8 MHz clock, 4 KB (2K x 16) flash in a 40-PDIP package.
The AT90S4434-8JC from Microchip Technology is an 8-bit AVR 90S microcontroller Integrated Circuit with 8 MHz operation and 4 KB (2K x 16) flash memory in a 44-PLCC (16.6x16.6) package.
The AT90S4434-8JI from Microchip Technology is an AVR 90S 8-bit microcontroller Integrated Circuit running at 8 MHz with 4 KB (2K x 16) flash memory, in a 44-PLCC (16.6x16.6) package.
The AT90S4434-8AI from Microchip Technology is an AVR AVR 90S 8-bit microcontroller Integrated Circuit running at 8 MHz with 4 KB (2K x 16) flash memory in a 44-TQFP (10x10) package.
The AT90S4434-8AC from Microchip Technology is an AVR 90S 8-bit microcontroller Integrated Circuit running at 8 MHz with 4 KB (2K x 16) flash memory, in a 44-TQFP (10x10) package.