| Part Number | P89LV51RB2BBC,557 | P89V51RB2BBC,557 |
|---|---|---|
| Manufacturer | NXP USA Inc. | NXP USA Inc. |
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers |
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| Product Status | Obsolete | Obsolete |
| Core Processor | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit |
| Speed | 33MHz | 40MHz |
| Connectivity | SPI, UART/USART | SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 32 | 32 |
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) |
| Program Memory Type | Flash | Flash |
| EEPROM Size | - | - |
| RAM Size | 512 x 8 | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V | 4.5V ~ 5.5V |
| Data Converters | - | - |
| Oscillator Type | Internal | Internal |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 44-TQFP | 44-TQFP |
| Supplier Device Package | 44-TQFP (10x10) | 44-TQFP (10x10) |