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| Part Number | ATTINY28L-4AI | ATTINY28L-4AU | ATTINY28L-4PI | ATTINY28L-4MI | ATTINY28L-4AC |
|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Active | Obsolete | Obsolete | Obsolete |
| Core Processor | AVR | AVR | AVR | AVR | AVR |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 4MHz | 4MHz | 4MHz | 4MHz | 4MHz |
| Connectivity | - | - | - | - | - |
| Peripherals | POR, WDT | POR, WDT | POR, WDT | POR, WDT | POR, WDT |
| Number of I/O | 11 | 11 | 11 | 11 | 11 |
| Program Memory Size | 2KB (1K x 16) | 2KB (1K x 16) | 2KB (1K x 16) | 2KB (1K x 16) | 2KB (1K x 16) |
| Program Memory Type | Flash | Flash | Flash | Flash | Flash |
| EEPROM Size | - | - | - | - | - |
| RAM Size | - | - | - | - | - |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Data Converters | - | - | - | - | - |
| Oscillator Type | Internal | Internal | Internal | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Through Hole | Surface Mount | Surface Mount |
| Package / Case | 32-TQFP | 32-TQFP | 28-DIP (0.300", 7.62mm) | 32-VFQFN Exposed Pad | 32-TQFP |
| Supplier Device Package | 32-TQFP (7x7) | 32-TQFP (7x7) | 28-PDIP | 32-VQFN (5x5) | 32-TQFP (7x7) |
