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| Part Number | AT89LP6440-20JU | AT89LP6440-20PU | AT89LP6440-20MU | AT89LP6440-20AU |
|---|---|---|---|---|
| Manufacturer | Microchip Technology | Atmel | Microchip Technology | Microchip Technology |
| Product Status | Active | Active | Active | Active |
| Core Processor | 8051 | 8051 | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit | 8-Bit | 8-Bit |
| Speed | 20MHz | 20MHz | 20MHz | 20MHz |
| Connectivity | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART | I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 38 | 38 | 38 | 38 |
| Program Memory Size | 64KB (64K x 8) | 64KB (64K x 8) | 64KB (64K x 8) | 64KB (64K x 8) |
| Program Memory Type | Flash | Flash | Flash | Flash |
| EEPROM Size | 8K x 8 | 8K x 8 | 8K x 8 | 8K x 8 |
| RAM Size | 4.25K x 8 | 4.25K x 8 | 4.25K x 8 | 4.25K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.4V ~ 3.6V | 2.4V ~ 3.6V | 2.4V ~ 3.6V | 2.4V ~ 3.6V |
| Data Converters | A/D 8x10b | A/D 8x10b | A/D 8x10b | A/D 8x10b |
| Oscillator Type | 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) |
| Mounting Type | Surface Mount | Through Hole | Surface Mount | Surface Mount |
| Package / Case | 44-LCC (J-Lead) | 40-DIP (0.600", 15.24mm) | 44-VFQFN Exposed Pad | 44-TQFP |
| Supplier Device Package | 44-PLCC (16.6x16.6) | 40-PDIP | 44-VQFN (7x7) | 44-TQFP (10x10) |
