Description
PIC18F2x/4xQ10 microcontrollers feature Analog, Core Independent, and Communication Peripherals for
a wide range of general purpose and low-power applications. These 28/40/44 -pin devices are equipped
with a 10-bit ADC with Computation (ADC2) automating Capacitive Voltage Divider (CVD) techniques for
advanced touch sensing, averaging, filtering, oversampling and performing automatic threshold
comparisons. They also offer a set of Core Independent Peripherals such as Complementary Waveform
Generator (CWG), Windowed Watchdog Timer (WWDT), Cyclic Redundancy Check (CRC)/Memory
Scan, Zero-Cross Detect (ZCD), Configurable Logic Cell (CLC), and Peripheral Pin Select (PPS),
providing for increased design flexibility and lower system cost.

Core Features
• C Compiler Optimized RISC Architecture
• Operating Speed:
– DC – 64 MHz clock input over the full VDD range
– 62.5 ns minimum instruction cycle
• Programmable 2-Level Interrupt Priority
• 31-Level Deep Hardware Stack
• Three 8-Bit Timers (TMR2/4/6) with Hardware Limit Timer (HLT)
• Four 16-Bit Timers (TMR0/1/3/5)
• Low-Current Power-on Reset (POR)
• Power-up Timer (PWRT)
• Brown-out Reset (BOR)
• Low-Power BOR (LPBOR) Option
• Windowed Watchdog Timer (WWDT):
– Watchdog Reset on too long or too short interval between watchdog clear events
– Variable prescaler selection
– Variable window size selection
– All sources configurable in hardware or software