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| Part Number | AT87C51RB2-RLTUL | 
| Datasheet | AT87C51RB2-RLTUL datasheet | 
| Description | IC MCU 8BIT 16KB OTP 44VQFP | 
| Manufacturer | Microchip Technology | 
| Series | 87C | 
| Part Status | Obsolete | 
| Core Processor | 80C51 | 
| Core Size | 8-Bit | 
| Speed | 30/20MHz | 
| Connectivity | UART/USART | 
| Peripherals | POR, PWM, WDT | 
| Number of I/O | 32 | 
| Program Memory Size | 16KB (16K x 8) | 
| Program Memory Type | OTP | 
| EEPROM Size | - | 
| RAM Size | 512 x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 
| Data Converters | - | 
| Oscillator Type | Internal | 
| Operating Temperature | -40°C ~ 85°C (TA) | 
| Package / Case | Surface Mount | 
| Supplier Device Package | 44-LQFP | 
| Base Part Number | 44-VQFP (10x10) |