PIC16F819-I/P - 8-bit MCU 3.5KB Flash 20MHz 18-PDIP | Microchip
Référence : PIC16F819-I/P ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.4 | $3,40 |
| 10 | $3.06 | $30,60 |
| 100 | $2.72 | $272,00 |
| 500 | $2.45 | $1 225,00 |
| 1 000 | $2.18 | $2 180,00 |
PIC16F819-I/P Présentation
A PIC16 mid-range 8-bit microcontroller (MCU) is a member of the PIC16 family that uses a RISC-based Harvard architecture with 35 single-word instructions and a 200 ns instruction execution time. It belongs to the broader category of microcontrollers (MCUs) within the embedded computing hierarchy: microcontroller -> embedded processor -> semiconductor IC. Mid-range PIC16 devices integrate Flash program memory, SRAM data memory, EEPROM, A/D converters and communication peripherals in a single chip, serving as the system brain for low-power, cost-sensitive embedded applications.
The PIC16F819 features 3.5KB Flash program memory (2K x 14 words), 256 bytes SRAM, 256 bytes EEPROM data memory, 16 I/O pins, an 8MHz internal oscillator, a capture/compare/PWM (CCP) module, and a synchronous serial port configurable as 3-wire SPI or 2-wire I2C. It also integrates 5 channels of 10-bit Analog-to-Digital (A/D) conversion and supports supply voltages from 2.0V to 5.5V, making it suitable for both 3.3V and 5V designs.
Architecturally, the PIC16F819 implements Microchip's nanoWatt power management with multiple sleep modes and a wide operating voltage range, allowing the device to extend battery life in portable applications. The 14-bit instruction word, hardware stack, and peripheral feature set are upwardly compatible with the PIC16C7x and PIC16C62xA families, easing migration paths for legacy designs.
Typical applications include consumer electronics (remote controls, small appliances, toys), industrial control (sensor interfacing, low-end motor control via PWM), automotive body electronics, battery-powered instrumentation, and educational/developer boards where the PIC16F819's combination of internal oscillator, A/D, and SPI/I2C peripherals reduces external component count.
When designing with the PIC16F819-I/P, ensure proper decoupling (0.1uF ceramic close to VDD with bulk 10uF), reserve the MCLR pin for a clean reset, and leverage the internal 8MHz oscillator to reduce BOM cost. The 18-pin PDIP package is breadboard-friendly and ideal for prototyping or hand-soldered low-volume production.
This page synthesizes distributor pricing, drop-in PDIP alternatives, and practical design notes not found in the standalone PIC16F818/819 datasheet, giving procurement engineers and designers a single decision-ready reference.
Alternatives de remplacement direct pour PIC16F819-I/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-I/P (même facteur de forme et même empreinte) — différant par Internal Oscillator, Package, Core Architecture, Program Memory (Flash), Timers.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F818-I/P
✅ Remplacement direct✓ En stock
$2.55 / unité
Voir la fiche technique →PIC16F819-I/ML
✅ Remplacement direct✓ En stock
$1.92 / unité
Voir la fiche technique →PIC16F819-I/P Valeurs maximales et caractéristiques électriques
| Core | PIC16 mid-range 8-bit RISC |
| Instruction Set Width | 14-bit |
| Instruction Count | 35 single-word instructions |
| Maximum CPU Speed | 20 MHz (200 ns instruction cycle) |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | 16 |
| Internal Oscillator | 8 MHz |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| A/D Converter | 10-bit, 5 channels |
| Communication Peripherals | 1x SSP (SPI / I2C) |
| Timers | Timer0, Timer1, Timer2 |
| CCP Module | 1x Capture/Compare/PWM |
| Température de fonctionnement | -40 C to +85 C (industrial) |
| Boîtier | 18-pin PDIP (P) |
| Type de montage | Through-Hole |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de PIC16F819-I/P
| Broche 1 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Broche 2 | RA3/AN3/VREF+ — Digital I/O / Analog input 3 / A/D reference positive |
| Broche 3 | RA4/AN4/T0CKI — Digital I/O / Analog input 4 / Timer0 clock input |
| Broche 4 | RA5/MCLR/VPP — Digital I/O / Master Clear reset (active low) / Programming voltage |
| Broche 5 | VSS — Ground reference |
| Broche 6 | RB0/INT — Digital I/O / External interrupt input |
| Broche 7 | RB1 — Digital I/O |
| Broche 8 | RB2 — Digital I/O |
| Broche 9 | RB3/PGM — Digital I/O / Low-voltage ICSP programming input |
| Broche 10 | RB4 — Digital I/O |
| Broche 11 | RB5 — Digital I/O |
| Broche 12 | RB6/PGC — Digital I/O / ICSP clock |
| Broche 13 | RB7/PGD — Digital I/O / ICSP data |
| Broche 14 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Broche 15 | RA6/OSC2/CLKOUT — Digital I/O / Crystal oscillator output / Clock output |
| Broche 16 | RA7/OSC1/CLKIN — Digital I/O / Crystal oscillator input / External clock input |
| Broche 17 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Broche 18 | RA1/AN1 — Digital I/O / Analog input channel 1 |
Applications typiques
PIC16F819-I/P convient pour 6 applications: Battery-Powered Sensor Nodes, Consumer Remote Controls, Small Appliance Control, Industrial Sensor Interfacing, Educational / Developer Boards, Automotive Body Electronics (non-safety).
Battery-Powered Sensor Nodes
The PIC16F819-I/P suits battery-powered sensor nodes thanks to its nanoWatt sleep modes that drop current below 1 uA, and its 2.0 V to 5.5 V supply range that works directly from 2xAA cells or 3.3 V coin cells. The 8 MHz internal oscillator eliminates an external crystal, reducing BOM and standby drain. The 10-bit, 5-channel A/D handles thermistor, photodiode or battery-voltage monitoring without an external ADC. With 16 GPIO, the device can drive an SPI/I2C sensor plus a low-power radio like the MRF24J40 or an SX127x LoRa module through its MSSP peripheral. Typical applications include wireless thermostats, soil-moisture sensors, and wearable health patches.
Recommandé
Consumer Remote Controls
The PIC16F819-I/P is well matched to IR remote-control designs because its 8 MHz internal oscillator and 16 I/O pins support IR-LED modulation (typically 38 kHz carrier) directly through the CCP PWM module without external timer ICs. The 3.5 KB Flash is more than adequate for NEC/RC5/RC6 encoding tables, while 256 bytes EEPROM can store learned-code sets across power cycles. The wide 2.0 V to 5.5 V supply lets the design run from two AAA cells. Sleep currents in nanoWatt mode extend battery life past one year of typical use, making it a strong fit for TV/STB universal remotes, fan controllers, and toy applications.
Recommandé
Small Appliance Control
Small appliances such as coffee makers, bread machines, humidifiers, and slow cookers benefit from the PIC16F819-I/P's mix of 16 GPIO, 5-channel 10-bit A/D, and CCP PWM for triac-driven heater or motor control. The 3.5 KB Flash comfortably fits state-machine firmware plus user-interface menus. Industrial-grade -40 C to +85 C operation tolerates kitchen thermal environments, while the 18-pin PDIP simplifies hand-soldered prototypes and field repairs. The internal 8 MHz oscillator reduces component count and improves EMC versus discrete oscillator solutions, helping designers meet household-appliance EMI limits.
Recommandé
Industrial Sensor Interfacing
Factory-floor sensor interfaces such as 4-20 mA loop transmitters, thermocouple conditioners, and bridge-sensor signal conditioners leverage the PIC16F819-I/P's 10-bit A/D with five input channels and its SPI/I2C MSSP for connecting to external ADCs or DACs. The 20 MHz CPU speed supports up to 200 ns instruction execution, enabling polled-loop sampling rates above 10 kHz. The 2.0 V to 5.5 V supply simplifies 3.3 V transducer designs, while 256 bytes EEPROM can hold calibration tables. The 18-pin PDIP is breadboard-friendly for prototype panel builds in industrial test stands.
Recommandé
Educational / Developer Boards
The PIC16F819-I/P's 18-pin PDIP through-hole package is breadboard-friendly and tolerant of repeated insertions, making it a popular choice for university microcontroller courses and PIC training kits. The internal 8 MHz oscillator means students can program and run a part without an external crystal. The 3.5 KB Flash accommodates sample programs covering GPIO, A/D, timers, PWM, and SPI/I2C, while 256 bytes SRAM supports modest data buffers for class projects. Pairs naturally with Microchip's MPLAB X IDE, XC8 compiler, and PICkit 3/4 programmers for a complete teaching toolchain.
Recommandé
Automotive Body Electronics (non-safety)
Non-safety automotive body applications such as interior lighting controllers, seat-position memory, mirror-adjust modules, and HVAC blend-door actuators can use the PIC16F819-I/P when full AEC-Q100 qualification is not required. Its industrial -40 C to +85 C range covers cabin environments, and its 8 MHz internal oscillator plus 16 GPIO handle LED drivers, switch inputs, and LIN/CAN-friendliness through the MSSP peripheral with an external transceiver. The 3.5 KB Flash stores fade curves and configuration tables, while 256 bytes EEPROM retains user presets across battery disconnects. For safety-critical automotive applications, designers should upgrade to AEC-Q100 qualified PIC16F equivalents from the PIC16F193x family.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16F819-I/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16F818-I/P | PIC16F88-I/P | PIC16F819-E/P |
|---|---|---|---|---|
| Package | 18-PDIP (P) | 18-PDIP (P) - same | 18-PDIP (P) - same | 18-PDIP (P) - same (extended temp) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 3.5 KB (2K x 14) | 1.75 KB (1K x 14) -50% | 4 KB (2K x 14) +14% | 3.5 KB (2K x 14) same |
| Data SRAM | 256 B | 128 B -50% | 368 B +44% | 256 B same |
| Data EEPROM | 256 B | 128 B -50% | 256 B same | 256 B same |
| Maximum CPU Speed | 20 MHz | 20 MHz same | 20 MHz same | 20 MHz same |
| I/O Pins | 16 | 16 same | 16 same | 16 same |
| A/D Converter | 10-bit, 5 ch | 10-bit, 5 ch same | 10-bit, 7 ch +40% | 10-bit, 5 ch same |
| Operating Temperature | -40 C to +85 C (industrial) | -40 C to +85 C same | -40 C to +85 C same | -40 C to +125 C (extended) |
| Internal Oscillator | 8 MHz | 8 MHz same | 8 MHz same | 8 MHz same |
Principaux différenciateurs
- Larger Flash than PIC16F818 in identical footprint (vs PIC16F818-I/P)
- Five A/D channels with internal oscillator in PDIP (vs PIC16F88-I/P)
- Industrial temperature option with identical die (vs PIC16F819-E/P)
- nanoWatt technology extends battery life (vs PIC16F690-I/P)
Notes de conception
The PIC16F819-I/P operates from 2.0 V to 5.5 V, but clean supply decoupling is critical: place a 0.1 uF ceramic capacitor as close as physically possible to VDD (pin 14) with a 10 uF bulk capacitor near the MCU. For battery applications, leverage the nanoWatt Sleep mode (current typically <1 uA per datasheet DS39598E) and wake only via watchdog timer or external interrupt to maximize runtime.
Keep traces to MCLR (pin 4) short and away from switching nodes to avoid spurious resets. When using the internal 8 MHz oscillator, RA6/OSC2 and RA7/OSC1 can be repurposed as digital I/O, freeing two GPIO pins. If an external crystal is needed for higher timing accuracy (e.g., UART at non-standard baud rates), route the crystal traces symmetrically with a ground guard ring per the Microchip PIC16F818/819 datasheet oscillator layout guidelines.
Do not leave the MCLR pin floating - it must be tied to VDD through a 10 kohm resistor for proper operation in non-ICSP circuits. Watch out for the 14-bit instruction word: pointer arithmetic on PCLATH must set the upper bits before GOTO/CALL, otherwise the program counter jumps to an unintended address. Always validate the configuration bits (CONFIG register) for oscillator selection and watchdog enable/disable before locking the firmware.
When using the MSSP in I2C mode, ensure pull-up resistors (typically 4.7 kohm for 100 kHz, 2.2 kohm for 400 kHz) are sized for the bus capacitance. For SPI, keep clock traces short and avoid stubs; the PIC16F819-I/P supports SPI up to FOSC/4 (5 MHz at 20 MHz CPU). The analog inputs AN0-AN4 share digital I/O; configure them as analog inputs (ANSEL register) before sampling to prevent digital noise coupling into the A/D result.
Informations de conformité
Per Microchip product page, the PIC16F819-I/P is RoHS compliant and lead-free. The part is industrial temperature (-40C to +85C) only - not AEC-Q100 qualified. For AEC-Q100 automotive applications, use PIC16F819T-I/ML or migrate to PIC16F193x family.
