PIC16F73-E/ML
PIC16F73-E/ML - 20MHz 8-Bit Flash MCU | Microchip
Microchip Technology PIC16F73-E/ML is an 8-bit flash-programmed CMOS microcontroller operating up to 20 MHz with 7 KB of program memory organized as 4096 words of 14-bit Flash in a 28-QFN exposed-pad package measuring 6 x 6 mm. It includes five 8-bit analog-to-digital converter channels, two additional timers, two capture/compare/PWM functions, SPI, I²C, and USART serial interfaces, and operates from 2.5 V to 5.5 V.
A microcontroller is a programmable semiconductor that combines a CPU, nonvolatile memory, digital I/O, timers, and peripherals on one integrated circuit. The PIC16F73 belongs to the PIC16F family of 8-bit embedded controllers, a type of embedded controller used to monitor sensors and control actuators. Its integrated peripherals reduce the need for external interface components while allowing compact designs for industrial control, instrumentation, communications, and consumer equipment.
Five 8-bit A/D channels provide direct conversion of analog sensor signals, while the timer, capture, compare, and PWM resources support periodic timing, input capture, event measurement, and proportional output generation. The synchronous serial port can operate as three-wire SPI or two-wire I²C, and the USART supports asynchronous serial communication. These interfaces make the device suitable for boards that must connect sensors, displays, memories, or other embedded controllers.
The 20 MHz operating speed provides processing headroom for interrupt-driven control and communication tasks. Its 7 KB Flash capacity corresponds to 4K x 14 words, allowing firmware, configuration data, and application logic to remain resident without an external program-memory device. The 28-QFN exposed-pad construction also supports improved heat transfer compared with a leaded package when the PCB provides suitable copper area.
Typical uses include industrial sensor nodes, digital instruments, motor or actuator controllers, serial-interface equipment, and compact embedded control modules. SPI is useful for higher-speed peripherals, I²C suits low-pin-count sensor buses, and the USART is appropriate for RS-232-style point-to-point links or UART-based equipment. The five A/D channels are especially useful when monitoring temperature, position, pressure, or other continuously varying analog conditions.
Designers should use the exposed pad as a thermal and electrical ground path, follow the manufacturer's recommended decoupling and layout guidance, and verify signal levels against the 2.5 V to 5.5 V operating range. Firmware migration or replacement must also confirm peripheral assignments, interrupt behavior, configuration settings, and package pin mapping rather than relying only on the device family name.
This page combines the verified manufacturer product data, distributor availability and pricing, documented interface capabilities, and engineering-focused selection guidance. It also identifies the limited availability of verified same-footprint alternatives, avoiding unsupported substitutions that could require board changes or firmware changes.
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