Microchip, 8 bit PIC, PIC18F4321 Microcontroller, 40 MHz, 8kB FLASH, 44-Pin TQFP

PIC18F2221/2321/4221/4321 8-Bit Microcontrollers

The PIC18F Microcontrollers from Microchip are the most capable 8-bit devices within Microchip’s offer. Available within the range is CAN, LIN and Ethernet capability as part of a comprehensive range of peripherals to meet the needs of embedded applications and versions featuring XLP (Extreme Low-Power) Technology for where power consumption is a key consideration.
The PIC18F2221/2321/4221/4321 family of Microcontrollers is based upon Microchip’s PIC18 architecture offering a 31 level hardware stack and 77 instructions. These MCUs provide up to 10 MIPS, up to 8 Kbytes program memory with 512 bytes RAM and Data EEPROM of 256 bytes. On board is a configurable oscillator with ±1% accuracy.

Microcontroller Features

• 40 MHz Max. CPU Speed
• 77 Instructions
• 31 Level Hardware Stack
• Configurable Internal Oscillator – Selectable Frequency Range 8 MHz to 31 kHz
• 25 I/O Pins – PIC18F2221/2321 Models
• 36 I/O Pins – PIC18F4221/4321 Models
• nanoWatt XLP Technology
• Power-On Reset (POR)
• Power-Up Timer (PWRT)
• Oscillator Start-Up Timer (OST)
• Brown-Out Reset (BOR)
• Extended Watchdog Timer (WDT)
• Low-Voltage Programming (LVP)
• In-Circuit Serial Programming (ICSP)
• In-Circuit Debug (ICD)

Peripherals

• 10-bit Analogue to Digital Converter (ADC) – PIC18F2221/2321 10 Channels; PIC18F4221/4321 13 Channels
• One Enhanced Capture, Compare, PWM Module – PIC18F4221/4321 Models Only
• Capture, Compare, PWM Module – PIC18F2221/2321 x 2; PIC18F4221/4321 x 1
• Two Comparators
• One 8-bit Timers
• Three 16-bit Timers
• High/Low-Voltage Detection (HLVD) Module
• Master Synchronous Serial Port (MSSP) Module with SPI and I2C
• Enhanced Universal Synchronous Asynchronous Receiver Transmitter (EUSART)