| PartNumber | AT87C51RC2-RLTUM | AT87C51RC2-3CSUM | AT87C51RC2-3CSUL |
| Description | 8-bit Microcontrollers - MCU 71RCX2 LYNX 32K OTP PCA DBLE D | 8-bit Microcontrollers - MCU 32KB SCMOS 3/2 .5 OTP | 8-bit Microcontrollers - MCU OTP RC/32K 40MHZ 3V |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | Through Hole | Through Hole |
| Package / Case | VQFP-44 | PDIL-40 | PDIL-40 |
| Series | 87C | 87C | 87C |
| Core | 80C51 | 80C51 | 80C51 |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 60 MHz | 60 MHz | 60 MHz |
| Program Memory Size | 32 kB | 32 kB | 32 kB |
| Data RAM Size | 512 B | 512 B | 512 B |
| ADC Resolution | No ADC | No ADC | No ADC |
| Number of I/Os | 32 I/O | 32 I/O | 32 I/O |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Minimum Operating Temperature | 0 C | 0 C | - 40 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 85 C |
| Height | 1.45 mm | 4.95 mm | 4.95 mm |
| Length | 10.1 mm | 53.21 mm | 53.21 mm |
| Product | MCU | MCU | MCU |
| Program Memory Type | OTP | OTP | OTP |
| Width | 10.1 mm | 14.73 mm | 14.73 mm |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Interface Type | UART | UART | UART |
| Number of Timers/Counters | 3 Timer | 3 Timer | 3 Timer |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 800 | 216 | 216 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 4.5 V | 4.5 V | 2.7 V |