8-bit microcontroller featuring an 8051 core architecture and 32KB of FLASH memory. This CMOS device operates at up to 25MHz, offering 34 programmable I/Os and supporting I2C, SPI, UART, USART, and SMBus interfaces. It includes 8.25KB of RAM, 4 timers/counters, and peripherals such as POR, PWM, WDT, DMA, and LCD. Designed for surface mounting in a 6x6mm QFN EP package, it operates from 1.8V to 3.8V and is RoHS compliant.
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| Package/Case | QFN EP |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Frequency | 25MHz |
| Interface | I2C, SPI, UART, USART, SMBus |
| Max Frequency | 25MHz |
| Max Operating Temperature | 85°C |
| Memory Size | 32KB |
| Memory Type | FLASH, |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 3.8V |
| Min Supply Voltage | 1.8V |
| Mount | Surface Mount |
| Number of I/Os | 34 |
| Number of Programmable I/O | 34 |
| Number of Timers/Counters | 4 |
| Operating Supply Voltage | 3.3V |
| Oscillator Type | Internal |
| Packaging | Tray |
| Peripherals | POR, PWM, WDT, DMA, LCD |
| Radiation Hardening | No |
| RAM Size | 8.25KB |
| RoHS Compliant | Yes |
| Series | C8051F9xx |
| Watchdog Timer | Yes |
| RoHS | Compliant |
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