| PartNumber | P87C54X2BBD/157 | P87C54X2BBD,157 | P87C54X2BA,512 |
| Description | 8-bit Microcontrollers - MCU | Microcontrollers - MCU 8-bit Microcontrollers - MCU 80C51 16K/256 OTP | IC MCU 8BIT 16KB OTP 44PLCC |
| Manufacturer | NXP | NXP Semiconductors | - |
| Product Category | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | LQFP-44 | - | - |
| Core | 80C51 | - | - |
| Data Bus Width | 8 bit | - | - |
| Height | 1.4 mm | - | - |
| Length | 10 mm | - | - |
| Width | 10 mm | - | - |
| Brand | NXP Semiconductors | - | - |
| Product Type | 8-bit Microcontrollers - MCU | - | - |
| Subcategory | Microcontrollers - MCU | - | - |
| Unit Weight | 0.012561 oz | - | - |
| Series | - | 87C | - |
| Packaging | - | Tray | - |
| Package Case | - | 44-LQFP | - |
| Operating Temperature | - | 0°C ~ 70°C (TA) | - |
| Supplier Device Package | - | 44-LQFP (10x10) | - |
| Number of I O | - | 32 | - |
| Speed | - | 33MHz | - |
| EEPROM Size | - | - | - |
| Core Processor | - | 8051 | - |
| RAM Size | - | 256 x 8 | - |
| Program Memory Type | - | OTP | - |
| Peripherals | - | POR | - |
| Connectivity | - | EBI/EMI, UART/USART | - |
| Voltage Supply Vcc Vdd | - | 2.7 V ~ 5.5 V | - |
| Core Size | - | 8-Bit | - |
| Program Memory Size | - | 16KB (16K x 8) | - |
| Data Converters | - | - | - |
| Oscillator Type | - | Internal | - |