8-bit microcontroller (MCU) featuring 24KB FLASH memory and 1408B RAM. Operates at a maximum frequency of 40MHz with an 8-bit data bus width. Supports I2C, SPI, and UART/USART interfaces. Includes 32 programmable I/O pins, 3 timers/counters, and internal oscillator. Packaged in a QFN surface mount configuration, rated for -40°C to 85°C operation.
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Microchip PIC18F4539-I/ML technical specifications.
| Package/Case | QFN |
| Core Architecture | PIC |
| Data Bus Width | 8b |
| Interface | I2C, SPI, UART, USART |
| Max Frequency | 40MHz |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Power Dissipation | 1W |
| Max Supply Voltage | 5.5V |
| Memory Size | 24KB |
| Memory Type | FLASH, |
| Min Supply Voltage | 4.2V |
| Mount | Surface Mount |
| Number of Programmable I/O | 32 |
| Number of Timers/Counters | 3 |
| Oscillator Type | Internal |
| Package Quantity | 45 |
| Packaging | Rail/Tube |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT, LVD |
| Radiation Hardening | No |
| RAM Size | 1408B |
| RoHS Compliant | Yes |
| Series | PIC® 18F |
| Watchdog Timer | Yes |
| RoHS | Compliant |
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