The PIC18F2x1x/4x1x family of microcontrollers are based on PIC18 architecture that offers a 31 level hardware stack and 75 instructions. These MCUs feature eXtreme Low Power technology, ideal for applications where low power consumption is vital.

16 MIPS Max. CPU Speed
75 Instructions – 83 with Extended Instruction Set Enabled
31 Level Hardware Stack
Configurable Internal Oscillator – Selectable Frequency Range 16 MHz to 31 kHz
18 I/O Pins
Power-On Reset (POR)
Power-Up Timer (PWRT)
Oscillator Start-Up Timer (OST)
Brown-Out Reset (BOR)
Extended Watchdog Timer (WDT)
In-Circuit Serial Programming (ICSP)
In-Circuit Debug (ICD)

Sleep Mode: 34 nA
Watchdog Timer: 460 nA
Timer1 Oscillator: 650 nA @ 32 kHz

10-bit Analogue-to-Digital Converter (ADC) – 12 Channels
Comparator Module
Voltage Reference Module
Three 16-bit Timers
One 8-bit Timer
One Enhanced Capture, Compare, PWM Module
Master Synchronous Serial Port (MSSP) Module with SPI and I²C
Enhanced Addressable Universal Synchronous Asynchronous Receiver Transmitter (EUSART)
SR Latch Module