| Part Number | TS87C51RB2-LCA | TS87C51RB2-LCE | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Core Processor | 80C51 | 80C51 | 
| Core Size | 8-Bit | 8-Bit | 
| Speed | 30/20MHz | 30/20MHz | 
| Connectivity | UART/USART | UART/USART | 
| Peripherals | POR, PWM, WDT | POR, PWM, WDT | 
| Number of I/O | 32 | 32 | 
| Program Memory Size | 16KB (16K x 8) | 16KB (16K x 8) | 
| Program Memory Type | OTP | OTP | 
| EEPROM Size | - | - | 
| RAM Size | 512 x 8 | 512 x 8 | 
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 5.5V | 2.7V ~ 5.5V | 
| Data Converters | - | - | 
| Oscillator Type | Internal | Internal | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Through Hole | Surface Mount | 
| Package / Case | 40-DIP (0.600", 15.24mm) | 44-QFP | 
| Supplier Device Package | 40-PDIL | 44-VQFP |