8-Bit Microcontroller featuring an 8051 core architecture, operating at a maximum frequency of 25MHz. This FLASH memory microcontroller offers 64KB of program memory and 4.25KB of RAM. It supports multiple interfaces including I2C, SPI, UART, USART, SMBus, and USB, with 24 programmable I/O pins. Integrated peripherals include 16 ADC channels, 6 PWM channels, 4 timers/counters, and a watchdog timer. The component is housed in a 32-pin QFN package (5x5x1mm) and operates within a voltage range of 1.8V to 3.6V, with an operating temperature range of -40°C to 85°C.
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| Package/Case | QFN |
| Core Architecture | 8051 |
| Data Bus Width | 8b |
| Frequency | 25MHz |
| Height | 1mm |
| Interface | I2C, SPI, UART, USART, SMBus, 2-Wire |
| Length | 5mm |
| Max Frequency | 25MHz |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 3.6V |
| Memory Size | 64KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 1.8V |
| Number of ADC Channels | 16 |
| Number of I/Os | 24 |
| Number of Programmable I/O | 24 |
| Number of PWM Channels | 6 |
| Number of SPI Channels | 1 |
| Number of Timers/Counters | 4 |
| Number of UART Channels | 1 |
| Number of USB Channels | 1 |
| Oscillator Type | Internal |
| Package Quantity | 60 |
| Packaging | Rail/Tube |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, Temp Sensor |
| Radiation Hardening | No |
| RAM Size | 4.25KB |
| Reach SVHC Compliant | No |
| RoHS Compliant | Yes |
| Series | C8051F9xx |
| Watchdog Timer | Yes |
| Width | 5mm |
| RoHS | Compliant |
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