PIC18F6720T-I/PT
PIC18F6720T-I/PT - 128KB Flash 8-bit MCU, 25MHz, TQFP-64 | Microchip
The Microchip Technology PIC18F6720T-I/PT is an 8-bit PIC18F-series RISC microcontroller delivering 25 MIPS of processing throughput, 128 KB of on-chip Flash program memory (64K x 16 words) and 3840 bytes of data SRAM, in a 64-pin TQFP (10x10 mm) package. The integrated 10 MIPS core operates up to 25 MHz, includes 1024 bytes of data EEPROM, 12 channels of 10-bit A/D, two analog comparators, five CCP/ECCP modules, and configurable SPI/I2C/USART serial interfaces.
An 8-bit microcontroller (MCU) is a programmable processor built around an 8-bit data path, on-chip non-volatile program memory (Flash), volatile data RAM, and a fixed set of peripherals (ADC, timers, communication ports). 8-bit MCUs belong to the broader family of microcontrollers, which are a class of embedded processors that integrate CPU, memory, and I/O on a single die. Within Microchip's portfolio, the PIC18F family sits between the baseline PIC10/12/16 families and the 16-bit PIC24/dsPIC families, targeting applications that need more code space and richer peripherals than entry-level parts, but where cost-sensitive and deterministic interrupt response outweigh the throughput of 32-bit Cortex-M devices.
Key features of the PIC18F6720 include self-programming Flash, an ICD (In-Circuit Debugger) interface, an external memory addressing bus for parallel-memory expansion, three timers, two analog comparators, and flexible oscillator options including the low-power 31 kHz secondary oscillator. The device supports up to 52 digital I/O lines plus dedicated analog and peripheral pins, allowing the TQFP-64 package to drive a wide variety of sensors, displays, and actuators.
Architecturally the PIC18F6720 uses a 16-bit instruction word with an 8-bit data path, allowing single-cycle hardware multiply and a 32-level hardware stack for deterministic C-language interrupt handling. The wide Flash word means each instruction is fetched as a single 16-bit word, simplifying pipeline design and giving the family its reputation for predictable timing in real-time control loops.
Typical applications for the PIC18F6720T-I/PT include industrial control panels, motor-control front-ends, HVAC and appliance controllers, building-automation nodes, medical-device user interfaces, and automotive body-electronics modules where its 4.2 V to 5.5 V supply range, hardware multiply, and large peripheral set fit naturally. Designers often pair it with Microchip's MCP2515 CAN controller or MCP2551 CAN transceiver for industrial-automation gateways.
For new designs, consider using PIC18F66K22T-I/PT or PIC18F66K80T-I/PT instead: these later-generation parts add nanoWatt XLP deep-sleep modes, more ADC channels and PWMs, and typically ship at a comparable price. The PIC18F6720 remains attractive when firmware is already written against its register set or when its external memory bus is required.
This page synthesizes distributor pricing, drop-in alternative MPNs from the PIC18F6720 family, and practical design notes that go beyond the manufacturer datasheet, helping engineers select between this legacy part and newer PIC18F alternatives in the same TQFP-64 footprint.
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