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| Part Number | AT90S4434-8AI | AT90S4434-8JI | AT90S4434-8PI | AT90S4414-8AI | AT90S4433-8AI | AT90S4434-8AC | 
|---|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | 
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | 
| Core Processor | AVR | AVR | AVR | AVR | AVR | AVR | 
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 
| Speed | 8MHz | 8MHz | 8MHz | 8MHz | 8MHz | 8MHz | 
| Connectivity | SPI, UART/USART | SPI, UART/USART | SPI, UART/USART | SPI, UART/USART | SPI, UART/USART | SPI, UART/USART | 
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | POR, PWM, WDT | PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | POR, PWM, WDT | 
| Number of I/O | 32 | 32 | 32 | 32 | 20 | 32 | 
| Program Memory Size | 4KB (2K x 16) | 4KB (2K x 16) | 4KB (2K x 16) | 4KB (2K x 16) | 4KB (2K x 16) | 4KB (2K x 16) | 
| Program Memory Type | Flash | Flash | Flash | Flash | Flash | Flash | 
| EEPROM Size | 256 x 8 | 256 x 8 | 256 x 8 | 256 x 8 | 256 x 8 | 256 x 8 | 
| RAM Size | 256 x 8 | 256 x 8 | 256 x 8 | 256 x 8 | 128 x 8 | 256 x 8 | 
| Voltage - Supply (Vcc/Vdd) | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V | 4V ~ 6V | 
| Data Converters | A/D 8x10b | A/D 8x10b | A/D 8x10b | - | A/D 6x10b | A/D 8x10b | 
| Oscillator Type | Internal | Internal | Internal | Internal | External | Internal | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | Through Hole | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 44-TQFP | 44-LCC (J-Lead) | 40-DIP (0.600", 15.24mm) | 44-TQFP | 32-TQFP | 44-TQFP | 
| Supplier Device Package | 44-TQFP (10x10) | 44-PLCC (16.6x16.6) | 40-PDIP | 44-TQFP (10x10) | 32-TQFP (7x7) | 44-TQFP (10x10) |