8-bit CISC microcontroller featuring an 8051 core architecture. Offers 12KB of FLASH memory and 256B of RAM. Operates at up to 24MHz with an access time of 24µs. Supports SPI, UART, and USART interfaces, with 32 programmable I/Os and three timers/counters. Packaged in a 44-pin PLCC for surface mounting, with operating voltages from 2.7V to 5.5V.
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| Access Time | 24us |
| Package/Case | PLCC |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Frequency | 24MHz |
| Interface | SPI, UART, USART |
| Lead Free | Contains Lead |
| Max Frequency | 24MHz |
| Max Operating Temperature | 70°C |
| Memory Size | 12KB |
| Memory Type | FLASH, |
| Min Operating Temperature | 0°C |
| Max Supply Voltage | 5.5V |
| Min Supply Voltage | 2.7V |
| Mount | Surface Mount |
| Number of I/Os | 32 |
| Number of Programmable I/O | 32 |
| Number of Timers/Counters | 3 |
| Oscillator Type | Internal |
| Package Quantity | 27 |
| Packaging | Rail/Tube |
| Peripherals | POR, WDT |
| RAM Size | 256B |
| RoHS Compliant | No |
| Series | 89S |
| RoHS | Not Compliant |
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