PIC16F819-E/P - 8-Bit 20MHz Flash MCU | Microchip
Référence : PIC16F819-E/P ✓ ActifPIC16F819-E/P Présentation
An 8-bit microcontroller is a programmable semiconductor that executes instructions from embedded flash memory and uses digital input/output pins to monitor and control external circuitry. Within the product hierarchy, the PIC16F819 is a PIC16-family 8-bit microcontroller and a member of the broader embedded-processing and semiconductor category. Its combination of deterministic control, flexible serial interfaces, and mixed-signal sensing makes it appropriate for small control systems that do not require a high-performance 32-bit processor.
Key features include up to 20 MHz operation, 3.5 KB or 2K by 14 words of flash program memory, 256 bytes of EEPROM, and 16 I/O pins as identified by the verified distributor records. The internal 8 MHz oscillator provides a clock source without an external crystal, while the integrated 10-bit ADC provides five analog input channels for sensing temperature, potentiometer positions, light levels, or other slowly changing analog quantities.
The PIC16F819-E/P uses the enhanced PIC16 architecture, with flash memory supporting in-system programming and repeated firmware updates. Its capture, compare, and PWM resources support precise timing, motor-control, and waveform-generation tasks. A configurable synchronous serial port supports either 3-wire SPI or 2-wire I²C communication, allowing the controller to connect efficiently to sensors, displays, memories, and other peripherals without requiring separate dedicated serial interfaces.
Typical applications include small industrial controllers, sensor-interface modules, motor and actuator controllers, digital thermometers, hobby and education platforms, and compact consumer appliances. The 18-pin PDIP package is particularly useful for prototypes, through-hole educational boards, and repair assemblies where a socketed or easily soldered package simplifies assembly and replacement. A switching regulator or other compact regulator can supply the required operating voltage, subject to the device's electrical limits.
Designers should verify oscillator configuration, I/O direction, analog inputs, reset behavior, and programming connections against the manufacturer datasheet before layout. The 20 MHz maximum clock is distinct from the 8 MHz internal oscillator value: an external clock source may be used when the full operating speed and associated timing requirements are needed. Decoupling, programming interface access, and unused-pin treatment should follow the device's recommended schematic and pin guidance.
This page combines verified manufacturer and distributor information with practical architecture analysis, purchasing guidance, and engineering considerations. It distinguishes documented functions from parameters that require confirmation, helping designers select the MCU while avoiding assumptions about unreported electrical, thermal, or compliance details.
Alternatives de remplacement direct pour PIC16F819-E/P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16F819-E/P (même facteur de forme et même empreinte) — différant par Core Architecture, Operating Temperature, Package, Internal Oscillator, Program Memory (Flash).
Aucune alternative de remplacement direct disponible pour ce produit.
Demander des alternativesPIC16F819-E/P Valeurs maximales et caractéristiques électriques
| Microcontroller Type | 8-bit PIC flash microcontroller |
| Maximum Clock Speed | 20 MHz |
| Internal Oscillator Frequency | 8 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| EEPROM Data Memory | 256 bytes |
| General-Purpose I/O Pins | 16 pins |
| Analog-to-Digital Converter | 5-channel, 10-bit ADC |
| Synchronous Serial Port | Configurable as 3-wire SPI or 2-wire I²C |
| Timing and Control Peripherals | Capture, compare, and PWM |
| Supply Voltage Range | 4 V to 5.5 V |
| Package Type | 18-pin PDIP |
| Style de montage | Through-hole |
| Instruction Execution Time | 200 ns |
| Program Memory Instruction Set | 35 single-word instructions |
| Temperature Grade | Extended commercial grade |
| Statut du cycle de vie | Active |
Guide de configuration des broches du PIC16F819-E/P 18-pin pdip
Configuration des broches du PIC16F819-E/P (boîtier 18-pin pdip). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour PIC16F819-E/P.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
PIC16F819-E/P convient pour 6 applications: Industrial Sensor Interface, Motor and Actuator Control, Digital Thermometer and Environmental Monitor, Educational Microcontroller Platform, Compact Consumer Appliance Control, Programmable Timer and Data Logger.
Industrial Sensor Interface
The PIC16F819-E/P fits compact industrial sensor nodes because it combines five 10-bit ADC channels, 16 I/O pins, 256 bytes of EEPROM, and a configurable serial interface in an 18-pin PDIP package. An engineer can connect analog sensors to the ADC while using SPI or I²C to transfer readings to a controller or data logger. The 8 MHz internal oscillator simplifies the clock circuit, while 3.5 KB of flash provides room for acquisition, filtering, calibration, and communications firmware. The trade-off is the modest 20 MHz maximum speed, which is appropriate for typical supervisory and monitoring functions but not high-bandwidth signal processing.
Recommandé
Motor and Actuator Control
The PIC16F819-E/P is appropriate for basic motor, valve, and actuator control because it provides capture, compare, and PWM resources alongside 16 digital I/O pins. PWM can generate variable-duty-cycle drive signals, while capture inputs can measure timing events such as sensor pulses or switch transitions. The 20 MHz maximum clock and 3.5 KB flash are sufficient for straightforward control loops, and the 18-pin PDIP package is convenient for prototypes and manually assembled control boards. Designers should add suitable driver circuitry because MCU pins cannot directly operate high-current motors.
Recommandé
Digital Thermometer and Environmental Monitor
A digital thermometer or environmental monitor can use the PIC16F819-E/P's five 10-bit ADC channels to measure analog sensor outputs while 256 bytes of EEPROM stores calibration coefficients, thresholds, or operating history. Its configurable SPI or I²C port permits connection to a display, external memory, or remote sensor module, and the 8 MHz internal oscillator avoids a mandatory external crystal. The 18-pin PDIP package supports easy breadboard and through-hole prototyping. Accuracy depends on the sensor, reference strategy, layout, and calibration method documented in the complete manufacturer data sheet.
Recommandé
Educational Microcontroller Platform
The PIC16F819-E/P works well for education because its 8-bit architecture, 35 single-word instruction set, flash program memory, and documented peripherals make it approachable for introductory embedded-control instruction. Its 18-pin PDIP footprint is easy to place on a solderless board or socket and simplifies student assembly and component replacement. The five-channel 10-bit ADC supports basic analog exercises, while SPI and I²C allow projects to add sensors and displays. The limitation is the relatively small 3.5 KB program memory, which requires concise firmware and disciplined memory planning.
Recommandé
Compact Consumer Appliance Control
The PIC16F819-E/P can serve as the primary controller in a compact consumer appliance where the system requires a modest number of inputs, low-resolution analog sensing, and simple serial expansion. Its 256 bytes of EEPROM can retain settings, and flash permits firmware revision through the programming interface. The 4 V to 5.5 V operating range fits conventional 5 V power architectures, while the through-hole package is useful where cost and assembly simplicity outweigh miniaturization. If the appliance requires a much smaller board, more memory, or faster real-time control, a surface-mount MCU with greater resources may be preferable.
Recommandé
Programmable Timer and Data Logger
The capture/compare/PWM resources, 16 I/O pins, and configurable serial port make the PIC16F819-E/P suitable for a programmable timer or compact data logger. Timer inputs can measure intervals, PWM can generate control or warning signals, and SPI or I²C can connect to external storage or a communications module. Its 256-byte EEPROM is appropriate for calibration and compact configuration records, although sustained logging will normally require an external memory device. The 18-pin PDIP package also makes the controller convenient for retrofit boards and serviceable through-hole assemblies.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16F819-E/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Notes de conception
Design the supply for the documented 4 V to 5.5 V operating range and verify local bypass requirements against the complete manufacturer data sheet. Place the required input and output capacitors close to their associated pins, with short, low-impedance return paths. Account for startup current and peripheral loading rather than sizing the regulator only for the nominal control load. The verified excerpts do not provide the complete decoupling table, so capacitor values should not be inferred from this page.
Use the manufacturer's 18-pin PDIP pin assignment as the authoritative layout reference and preserve the proper orientation of pin 1. Keep the programming interface accessible if in-system programming is required, and route sensitive analog inputs away from switching nodes and high-current digital outputs. Because the supplied excerpt confirms the package but not the complete numbered pin table, no pin names or alternate-function assignments are inferred here.
Do not confuse the documented 8 MHz internal oscillator with the 20 MHz maximum clock rating. Clock configuration, external-clock requirements, and startup behavior must be checked in the complete data sheet. Likewise, the PIC16F819-E/P suffix identifies an 18-pin PDIP configuration, so a similarly named part in an SSOP or other package is not a drop-in replacement. Validate flash size, EEPROM, ADC channels, and serial-interface compatibility before releasing a substitution.
Informations de conformité
The verified excerpts identify the component as an active Microchip Technology product but do not provide explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. The product is a general-purpose microcontroller, so AEC-Q100 qualification is treated as not applicable.
