| PartNumber | P89V51RD2FA,512 | P89V51RD2FBC,557 | P89V51RD2FN,112 |
| Description | IC MCU 8BIT 64KB FLASH 44PLCC | IC MCU 8BIT 64KB FLASH 44TQFP | IC MCU 8BIT 64KB FLASH 40DIP |
| Manufacturer | - | NXP Semiconductors | NXP Semiconductors |
| Product Category | - | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Series | - | 89V | 89V |
| Packaging | - | Tray | Tube |
| Package Case | - | 44-TQFP | 40-DIP (0.600", 15.24mm) |
| Operating Temperature | - | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | 44-TQFP (10x10) | 40-DIP |
| Number of I O | - | 32 | 32 |
| Speed | - | 40MHz | 40MHz |
| EEPROM Size | - | - | - |
| Core Processor | - | 8051 | 8051 |
| RAM Size | - | 1K x 8 | 1K x 8 |
| Program Memory Type | - | FLASH | FLASH |
| Peripherals | - | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | SPI, UART/USART | SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | 4.5 V ~ 5.5 V | 4.5 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 |