
8-bit 8051 microcontroller with 4KB FLASH memory and 128B RAM. Features a 24MHz internal oscillator, 32 programmable I/Os, and 2 timers/counters. Operates from 4V to 5.5V with a maximum frequency of 33MHz. Includes UART/USART interface and WDT peripheral. Packaged in a 44-pin TQFP for surface mounting.
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Microchip AT89S51-24AC technical specifications.
| Access Time | 24us |
| Package/Case | TQFP |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Frequency | 24MHz |
| Interface | UART, USART |
| Lead Free | Contains Lead |
| Max Frequency | 33MHz |
| Max Operating Temperature | 70°C |
| Max Supply Voltage | 5.5V |
| Memory Size | 4KB |
| Memory Type | FLASH, |
| Min Operating Temperature | 0°C |
| Min Supply Voltage | 4V |
| Mount | Surface Mount |
| Number of I/Os | 32 |
| Number of Programmable I/O | 32 |
| Number of Timers/Counters | 2 |
| Oscillator Type | Internal |
| Package Quantity | 160 |
| Packaging | Tray |
| Peripherals | WDT |
| RAM Size | 128B |
| RoHS Compliant | No |
| Series | 89S |
| RoHS | Not Compliant |
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