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| Part Number | AT89LP428-20MH | AT89LP828-20MH |
|---|---|---|
| Manufacturer | Microchip Technology | Atmel |
| Product Status | Active | Active |
| Core Processor | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit |
| Speed | 20MHz | 20MHz |
| Connectivity | SPI, UART/USART | SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 30 | 30 |
| Program Memory Size | 4KB (4K x 8) | 8KB (8K x 8) |
| Program Memory Type | Flash | Flash |
| EEPROM Size | 512 x 8 | 1K x 8 |
| RAM Size | 768 x 8 | 768 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.4V ~ 5.5V | 2.4V ~ 5.5V |
| Data Converters | - | - |
| Oscillator Type | Internal | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 32-VFQFN Exposed Pad | 32-VFQFN Exposed Pad |
| Supplier Device Package | 32-VQFN (5x5) | 32-VQFN (5x5) |
