8-bit microcontroller featuring 64KB FLASH memory and 4.25KB RAM. Operates with an 8051 core architecture and an 8-bit data bus, supporting I2C, SPI, UART, SMBus, USART, and 2-Wire interfaces. Achieves a maximum frequency of 25MHz and includes 16 programmable I/O pins, 4 timers/counters, and an internal oscillator. Packaged in QFN for surface mounting, this RoHS compliant component operates from 1.8V to 3.6V, with a temperature range of -40°C to 85°C.
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| Package/Case | QFN |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Interface | I2C, SPI, UART, SMBus, USART, 2-Wire |
| Max Frequency | 25MHz |
| Max Operating Temperature | 85°C |
| Max Supply Voltage | 3.6V |
| Memory Size | 64KB |
| Memory Type | FLASH, |
| Min Operating Temperature | -40°C |
| Min Supply Voltage | 1.8V |
| Mount | Surface Mount |
| Number of I/Os | 16 |
| Number of Programmable I/O | 16 |
| Number of Timers/Counters | 4 |
| Oscillator Type | Internal |
| Package Quantity | 500 |
| Packaging | Tape and Reel |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, Temp Sensor |
| Radiation Hardening | No |
| RAM Size | 4.25KB |
| RoHS Compliant | Yes |
| Series | C8051F9xx |
| Watchdog Timer | Yes |
| RoHS | Compliant |
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