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| PartNumber | AT89C5131A-S3SUL | AT89C5131A-S3SUM | AT89C5131A-S3SIM |
| Description | 8-bit Microcontrollers - MCU 32K Flash 3V USB | 8-bit Microcontrollers - MCU 32K Flash USB Ind 5V | IC MCU 8BIT 32KB FLASH 52PLCC |
| Manufacturer | Microchip | Microchip | Atmel |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | PLCC-52 | PLCC-52 | - |
| Series | 89C | 89C | AT89C513x |
| Core | 80C51 | 80C51 | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 48 MHz | 48 MHz | - |
| Program Memory Size | 32 kB | 1.25 kB | 32KB (32K x 8) |
| Data RAM Size | 1.25 kB | 1.25 kB | - |
| ADC Resolution | No ADC | No ADC | - |
| Number of I/Os | 34 I/O | 34 I/O | - |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tube | Tube | Tube |
| Height | 4.06 mm | 4.06 mm | - |
| Length | 19.25 mm | 19.25 mm | - |
| Program Memory Type | Flash | EEPROM | FLASH |
| Width | 19.25 mm | 19.25 mm | - |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | - |
| Interface Type | 2-Wire, EUART, SPI, USB | 2-Wire, EUART, SPI, USB | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of Timers/Counters | 3 Timer | 16 Timer | - |
| Processor Series | AT89x | AT89x | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 23 | 23 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.6 V | 5.5 V | - |
| Supply Voltage Min | 3 V | 2.7 V | - |
| Unit Weight | 0.104503 oz | 0.104503 oz | - |
| Product | - | MCU | - |
| Package Case | - | - | 52-LCC (J-Lead) |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 52-PLCC (19.2x19.2) |
| Number of I O | - | - | 34 |
| Speed | - | - | 48MHz |
| EEPROM Size | - | - | 4K x 8 |
| Core Processor | - | - | 80C51 |
| RAM Size | - | - | 1.25K x 8 |
| Peripherals | - | - | LED, POR, PWM, WDT |
| Connectivity | - | - | I2C, SPI, UART/USART, USB |
| Voltage Supply Vcc Vdd | - | - | 2.7 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Data Converters | - | - | - |
| Oscillator Type | - | - | Internal |