PIC16F73-I/ML - 8-Bit 20MHz Flash MCU | Microchip
MPN： PIC16F73-I/ML ✓ 啟用中PIC16F73-I/ML 概覽
A PIC16-series microcontroller is a compact embedded-control device combining a CPU core, Flash program memory, data memory, I/O ports, timers, serial interfaces, and analog conversion functions. This PIC16F73-I/ML belongs to the Microcontroller > 8-bit MCU > embedded-processing hierarchy and is positioned for control-oriented systems that need flexible digital I/O, timing, communications, and modest analog measurement.
The 20 MHz maximum clock speed supports faster instruction execution than lower-speed 8-bit designs, while the 7 KB Flash memory stores 4K x 14 program words. Its 192-byte RAM is suitable for variables and working data, and 22 I/O pins provide connections for sensors, actuators, indicators, communication circuits, and control signals. The five-channel 8-bit ADC enables basic analog-to-digital measurement without an external converter.
Two additional timers and two capture/compare/PWM functions support periodic generation, timing, motor-control-related waveforms, and input-capture tasks. The synchronous serial port can operate as a three-wire SPI or two-wire I2C interface, while the USART supports asynchronous serial communication. These peripherals make the device useful for compact controllers that need multiple communication modes without relying on discrete interface devices.
Typical applications include industrial sensing and monitoring, motor and actuator control, instrumentation, keypad interfaces, LED and display control, communications equipment, and embedded consumer products. The 28-QFN package reduces board footprint but requires careful PCB layout and thermal planning because its exposed pad and fine-pitch leads can complicate assembly and rework.
Designers should verify pin multiplexing, oscillator configuration, ADC input availability, timer resource allocation, and the exact package drawing before layout. Firmware should also account for the PIC16F73 reset state and configure unused pins appropriately to prevent unintended digital inputs or analog activity. For replacement decisions, compare the complete device family and package rather than relying only on nominal speed or memory.
This page combines the verified manufacturer and distributor information with package, application, comparison, and design guidance intended to accelerate engineering review. It is intended as a concise technical reference, not a substitute for the complete Microchip datasheet during production qualification.
直接替換替代品，適用於 PIC16F73-I/ML — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16F73-I/ML （相同外形與佔位） — 差異在於 Package, Operating Temperature, Timers, Core Architecture, Program Memory.
PIC16F73T-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC16F73-I/SP
✅ 直接替換聯絡詢價
查看資料表 →PIC16F73-E/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC16F73T-I/SO
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F73-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC16F73-I/ML 最大額定值與電氣特性
| Microcontroller Type | 8-bit Flash-based CMOS microcontroller |
| 最大時脈頻率 | 20 MHz |
| Program Memory | 7 KB (4K x 14 words) |
| Data RAM | 192 bytes |
| Number of I/O Pins | 22 |
| ADC Resolution | 8 bits |
| ADC Channels | 5 channels |
| Timer Resources | 2 additional timers |
| Capture/Compare/PWM Functions | 2 functions |
| Synchronous Serial Interface | Configurable SPI or I2C |
| Asynchronous Serial Interface | USART |
| 封裝 | 28-QFN (6 x 6 mm) |
| 安裝類型 | Surface mount |
| Device Family | PIC16F73 |
| Temperature Grade Indicator | -I grade |
PIC16F73-I/ML 28-qfn (6 x 6 mm) 腳位配置指南
PIC16F73-I/ML（28-qfn (6 x 6 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： PIC16F73-I/ML.
請參閱 資料表 以查看完整腳位配置。
典型應用
PIC16F73-I/ML 適用於 6 應用s: Industrial Sensor Interface, Motor and Actuator Control, Instrumentation and Data Logging, Communications Interface Module, LED and Display Control, Consumer Embedded Controller.
Industrial Sensor Interface
PIC16F73-I/ML fits compact industrial sensor-interface designs requiring five 8-bit ADC channels and 22 I/O pins. The ADC can digitize basic analog sensor outputs, while the I/O pins support digital thresholds, alarm inputs, status LEDs, and actuator commands. Its 20 MHz clock provides headroom for sampling, filtering, debouncing, and control logic. SPI or I2C can connect local sensors or digital signal-conditioning devices, and the USART can support a service or logging link. For industrial deployment, verify the exact temperature rating, isolation, surge requirements, and grounding strategy against the complete datasheet.
推薦
Motor and Actuator Control
PIC16F73-I/ML can serve as the central controller in small motor, valve, relay, or actuator-control products. Its two additional timers and two capture/compare/PWM functions are useful for generating periodic control signals, measuring pulse widths, sequencing outputs, and implementing basic speed or position feedback. The 22 I/O pins allow direct connection to driver inputs, limit switches, and status feedback. PWM resolution, output-drive limits, and timing accuracy must be checked in the datasheet, while inductive loads require appropriate protection, grounding, and snubber design.
推薦
Instrumentation and Data Logging
PIC16F73-I/ML is appropriate for compact instrumentation products that combine sensor measurement with local display, keypad, and communications functions. The five ADC channels support simultaneous or multiplexed measurement of temperature, pressure, level, or resistive sensors, while timers help schedule sampling and communications tasks. SPI and I2C permit connection to displays, memory, or digital sensors, and the USART supports an external computer or service connection. Firmware should calibrate offsets and gain, compensate for ADC and sensor nonlinearity, and define safe behavior when readings exceed operating limits.
推薦
Communications Interface Module
PIC16F73-I/ML can act as a small protocol-conversion or equipment-control module because its synchronous serial port supports SPI or I2C and the device also includes USART functionality. This combination allows firmware to bridge sensor peripherals, local controllers, and an external host. The 20 MHz clock and 7 KB Flash provide space for buffering, packet handling, status reporting, and configuration logic, while 192 bytes of RAM supports modest protocol state. Designers should confirm baud-rate accuracy, serial interrupt behavior, pin multiplexing, and electrical levels before selecting external transceivers.
推薦
LED and Display Control
PIC16F73-I/ML can control LED indicators, status lamps, multiplexed displays, and simple user-interface panels in embedded products. Its 22 I/O pins provide enough parallel connections for display segments, buttons, indicators, and driver-control signals, while the timer resources help generate refresh timing or periodic effects. The SPI or I2C interface can reduce pin usage when connecting a serial display or LED driver. Firmware must account for current limits, driver logic levels, debounce timing, and the electrical limits of each output pin.
推薦
Consumer Embedded Controller
PIC16F73-I/ML is suitable for compact consumer devices that need embedded control, local sensing, and serial connectivity without a high-performance processor. It can manage buttons, indicators, small motors, relays, or sensor modules while its five ADC channels support basic analog inputs. The 8-bit architecture and 7 KB Flash are appropriate for deterministic, cost-conscious control tasks rather than graphics, intensive data storage, or complex user interfaces. The 28-QFN footprint supports compact assemblies, but assembly capability and exposed-pad inspection should be considered.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16F73-I/ML — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16F73T-I/ML | PIC16F73-I/SP | PIC16F73-E/ML | PIC16F73T-I/SO | PIC16F73-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6 x 6 mm) | 28-QFN (6 x 6 mm), verify against package drawing | Package equivalence requires verification | 28-QFN (6 x 6 mm), verify ordering code | Package equivalence requires verification | Package equivalence requires verification |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
主要差異化特點
- Integrated mixed communication capability (對比PIC16F73T-I/ML)
- Analog and timing integration (對比PIC16F73-I/SP)
- 20 MHz control headroom (對比PIC16F73-E/ML)
設計說明
Begin the layout with the official Microchip 28-QFN package drawing and pin table. Keep the MCU power pins and their bypass capacitors close together, use short and wide supply connections, and place the exposed pad according to the manufacturer land-pattern and thermal requirements. Because the supplied snippets do not provide complete pin coordinates or pad dimensions, do not infer the footprint from a generic QFN drawing.
Confirm the supply voltage range, decoupling recommendations, current limits, and reset requirements directly from the PIC16F73 datasheet before routing power. Add local bulk and high-frequency bypass capacitance where required by the device guidelines, and keep switching-regulator traces away from ADC inputs and sensitive timing paths. Validate startup, brownout, and power-sequencing behavior in the final system rather than relying only on nominal clock specifications.
Treat SPI, I2C, USART, oscillator, and ADC signals according to their expected edge rates and board topology. Keep clock and serial traces short, provide a continuous ground reference, and use appropriate series termination when reflections are observed. ADC inputs should be isolated from switching nodes and high-current actuator paths, with input filtering selected to balance measurement response time and noise rejection.
Do not select a replacement based only on the PIC16F73 family name. Confirm package suffix, temperature grade, flash program words, RAM, ADC resources, timer allocation, serial multiplexing, oscillator pins, reset behavior, and exposed-pad requirements. A valid drop-in decision must use the manufacturer pinout and ordering information together with a review of firmware and peripheral compatibility.
合規資訊
The verified snippets identify the product and its environmental or qualification information was not provided. Confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals status using the current Microchip product documentation and supplier declarations.
