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| PartNumber | TP87C51 | TP87C511 | TP87C51FA |
| Description | Microcontroller, 8-Bit, OTPROM, 8051 CPU, 16MHz, CMOS, PDIP40 | 8 BIT UC, 8K EPROM/OTP, 256 RAM PCA | |
| Manufacturer | Intel | Intel | Intel |
| Product Category | Embedded - Microcontrollers | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Series | 87C | 87C | 87C |
| Packaging | Tube | Tube | Tube |
| Package Case | 40-DIP | 40-DIP | 40-DIP |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supplier Device Package | 40-DIP | 40-DIP | 40-DIP |
| Number of I O | 32 | 32 | 32 |
| Speed | 16MHz | 16MHz | 16MHz |
| EEPROM Size | - | - | - |
| Core Processor | MCS 51 | MCS 51 | MCS 51 |
| RAM Size | 128 x 8 | 128 x 8 | 256 x 8 |
| Program Memory Type | OTP | OTP | OTP |
| Peripherals | - | - | PWM, WDT |
| Connectivity | SIO | SIO | SIO |
| Voltage Supply Vcc Vdd | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V |
| Core Size | 8-Bit | 8-Bit | 8-Bit |
| Program Memory Size | 4KB (4K x 8) | 4KB (4K x 8) | 8KB (8K x 8) |
| Data Converters | - | - | - |
| Oscillator Type | External | External | External |