Specs side by side
2 parts compared · 0 differing specs across 5 total parameters.
| Parameter | ||
|---|---|---|
| Case | PDIP-40 / TQFP-44 / PLCC-44 | PDIP-40 / TQFP-44 / PLCC-44 |
| Component Category | Embedded Microcontrollers (MCU) | Embedded Microcontrollers (MCU) |
| Market Reality | The AT89S52 is the 8051 that refused to die: the same 40-pin DIP body and instruction set as the industry-standard AT89C52, with the one repair-relevant difference in the name - the S means SPI in-system programming at 5V, where the C-generation needed a 12V parallel programmer that has since vanished from most benches. The C parts are EOL; the S52 is the drop-in that replaced them; and the Chinese STC89C52RC line goes further - pin-for-pin and code-compatible, with more RAM, built-in EEPROM and UART downloading over a plain serial converter. This socket is a three-generation ladder where everything fits and the tools differ, which is exactly what confuses repairs. | The AT89S52 is the 8051 that refused to die: the same 40-pin DIP body and instruction set as the industry-standard AT89C52, with the one repair-relevant difference in the name - the S means SPI in-system programming at 5V, where the C-generation needed a 12V parallel programmer that has since vanished from most benches. The C parts are EOL; the S52 is the drop-in that replaced them; and the Chinese STC89C52RC line goes further - pin-for-pin and code-compatible, with more RAM, built-in EEPROM and UART downloading over a plain serial converter. This socket is a three-generation ladder where everything fits and the tools differ, which is exactly what confuses repairs. |
| Role In Circuit | Original Reference Part | Original Reference Part |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | Active Shenzhen Spot Sourcing (24–48h) |