PIC18F6722-E/PT
PIC18F6722-E/PT - 8-bit PIC MCU, 128KB Flash, 25MHz | Microchip
The Microchip Technology PIC18F6722-E/PT is an 8-bit PIC18 microcontroller featuring 128KB (64K x 16) of enhanced Flash program memory, 3,936 bytes of RAM, and a 64-pin TQFP (10x10 mm) package. It operates at up to 25MHz from a 4.2V to 5.5V supply, targeting large low-power (nanoWatt) and connectivity-rich embedded designs that require multiple serial interfaces and substantial on-chip memory.
A microcontroller (MCU) is a single-chip computer containing a CPU, non-volatile program memory, RAM, and multiple peripherals. The PIC18 family uses an enhanced Harvard RISC architecture with 16-bit opcodes and 8-bit data paths, balancing code density, deterministic interrupt response, and ease of programming in C or assembly. Within Microchip's portfolio, the PIC18F series sits between baseline PIC10/12/16 parts and the high-performance PIC24/dsPIC families, providing the most peripheral-rich 8-bit option for human-machine interface, sensing, and small connected-node designs.
Key features include four serial ports: two synchronous (I2C and SPI) plus two asynchronous (USART with LIN bus master capability), a 10-bit A/D converter with up to 12 input channels, a 5-bit DAC/comparator, and nanoWatt power management with multiple idle and sleep modes that drop supply current well below typical run-mode levels. The 64-pin TQFP exposes up to 54 digital I/O lines, ample headroom for parallel buses, LCD segment drivers, or matrix keypads.
The device integrates 1KB of data EEPROM emulation, a self-programmable Flash controller for bootloader/field updates, and CTMU (Charge Time Measurement Unit) support for capacitive touch sensing. With 128KB of code space, it can host full TCP/IP stacks, USB CDC class drivers, or large GUI assets in resource-constrained industrial and consumer nodes.
Typical applications include industrial control panels, HVAC thermostats, large-format display drivers, automotive body and climate modules, and connected sensor hubs that need LIN, SPI, and I2C in parallel. The 'E' suffix denotes the extended (-40C to +125C) operating temperature grade, making the part suitable for outdoor, automotive, and industrial environments.
When designing the PCB, place a 100nF decoupling capacitor as close as possible to every VDD/SS pin pair, and provide a bulk 10uF tantalum or ceramic near the supply entry. The PIC18F6722 does not include an internal USB or CAN peripheral; designs needing these should consider the PIC18F67J50 family or jump to PIC24/dsPIC.
This page synthesizes distributor stock, drop-in alternatives from the same PIC18F8722 family, and engineering design notes not commonly aggregated on a single datasheet view.
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