| Part Number | AT89C52-24JC | AT89C55-24JC |
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology |
| Category | Embedded - Microcontrollers | Embedded - Microcontrollers |
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| Product Status | Obsolete | Obsolete |
| Core Processor | 8051 | 8051 |
| Core Size | 8-Bit | 8-Bit |
| Speed | 24MHz | 24MHz |
| Connectivity | SIO, UART/USART | - |
| Peripherals | - | - |
| Number of I/O | 32 | 32 |
| Program Memory Size | 8KB (8K x 8) | 20KB (20K x 8) |
| Program Memory Type | Flash | Flash |
| EEPROM Size | - | - |
| RAM Size | 256 x 8 | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 6V | 4V ~ 6V |
| Data Converters | - | - |
| Oscillator Type | Internal | Internal |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 44-LCC (J-Lead) | 44-LCC (J-Lead) |
| Supplier Device Package | 44-PLCC (16.6x16.6) | 44-PLCC (16.6x16.6) |