| PartNumber | P87C51RD2BA/512 | P87C51RD2BA,512 | P87C51RD2BBD,157 |
| Description | 8-bit Microcontrollers - MCU | Microcontrollers - MCU 8-bit Microcontrollers - MCU 80C51 64K/1K OTP | Microcontrollers - MCU 8-bit Microcontrollers - MCU 80C51 64K/1K OTP |
| Manufacturer | NXP | NXP Semiconductors | NXP Semiconductors |
| Product Category | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | PLCC-44 | - | - |
| Core | 80C51 | - | - |
| Data Bus Width | 8 bit | - | - |
| Height | 3.68 mm (Min) | - | - |
| Length | 16.66 mm (Max) | - | - |
| Width | 16.66 mm (Max) | - | - |
| Brand | NXP Semiconductors | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Unit Weight | 0.084185 oz | - | - |
| Series | - | 87C | 87C |
| Packaging | - | Tube | Tray |
| Package Case | - | 44-LCC (J-Lead) | 44-LQFP |
| Operating Temperature | - | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Supplier Device Package | - | 44-PLCC (16.59x16.59) | 44-LQFP (10x10) |
| Number of I O | - | 32 | 32 |
| Speed | - | 33MHz | 33MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | 8051 | 8051 |
| RAM Size | - | 1K x 8 | 1K x 8 |
| Program Memory Type | - | OTP | OTP |
| Peripherals | - | POR, PWM, WDT | POR, PWM, WDT |
| Connectivity | - | EBI/EMI, UART/USART | EBI/EMI, UART/USART |
| Voltage Supply Vcc Vdd | - | 2.7 V ~ 5.5 V | 2.7 V ~ 5.5 V |
| Core Size | - | 8-Bit | 8-Bit |
| Program Memory Size | - | 64KB (64K x 8) | 64KB (64K x 8) |
| Data Converters | - | - | - |
| Oscillator Type | - | Internal | Internal |