| PartNumber | P87C661X2BBD/157 | P87C661X2BBD,157 | P87C661X2FA,529 |
| Description | 8-bit Microcontrollers - MCU | IC MCU 8BIT 16KB OTP 44LQFP | IC MCU 8BIT 16KB OTP 44PLCC |
| Manufacturer | NXP | - | - |
| Product Category | 8-bit Microcontrollers - MCU | - | - |
| 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 | - | - |