| Part Number | AT90LS2343-4PI | AT90LS2343-4SI | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Core Processor | AVR | AVR | 
| Core Size | 8-Bit | 8-Bit | 
| Speed | 4MHz | 4MHz | 
| Connectivity | SPI | SPI | 
| Peripherals | Brown-out Detect/Reset, POR, WDT | Brown-out Detect/Reset, POR, WDT | 
| Number of I/O | 5 | 5 | 
| Program Memory Size | 2KB (1K x 16) | 2KB (1K x 16) | 
| Program Memory Type | Flash | Flash | 
| EEPROM Size | 128 x 8 | 128 x 8 | 
| RAM Size | 128 x 8 | 128 x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 6V | 2.7V ~ 6V | 
| Data Converters | - | - | 
| Oscillator Type | Internal | Internal | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | 
| Mounting Type | Through Hole | Surface Mount | 
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-SOIC (0.209", 5.30mm Width) | 
| Supplier Device Package | 8-PDIP | 8-SOIC |