PIC16F1778T-I/MX - 8-bit MCU, 28KB Flash, 32MHz | Microchip
Référence : PIC16F1778T-I/MX ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.1 | $3,10 |
| 10 | $2.78 | $27,80 |
| 100 | $2.42 | $242,00 |
| 500 | $2.1 | $1 050,00 |
| 1 000 | $1.85 | $1 850,00 |
PIC16F1778T-I/MX Présentation
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, working RAM, and a rich set of on-chip peripherals including timers, ADC, communication interfaces, and digital I/O. Within the broader power management and embedded control hierarchy, an 8-bit MCU like the PIC16F1778 occupies the supervisory node that closes the loop on analog signals, drives PWM channels, and hosts user firmware. The '16F' prefix denotes flash program memory and the PIC16 enhanced mid-range architecture with 200ns instruction execution, balancing deterministic interrupt latency with ample code density.
Key differentiating specifications include 2KB of RAM, a 10-bit ADC, multiple PWM/capture/compare peripherals and the PIC XLP (eXtreme Low Power) sleep-mode architecture that lets this part enter deep sleep currents measured in the nanoamp range. The 28-UQFN (6x6 mm) 'MX' package provides a small PCB footprint with an exposed thermal pad suited to compact industrial modules and consumer electronics where board area is at a premium. The 'T' infix indicates tape-and-reel packaging for high-volume SMT assembly, and the 'I' suffix marks the industrial -40C to +85C operating temperature grade.
Architecturally the PIC16F1778 combines the 14-bit instruction word with a peripheral set that includes operational amplifiers, comparators, slope compensation hardware and configurable logic cells, enabling power-conversion and lighting firmware to run without external analog components. The combination of a 32MHz FOSC, 28KB flash, and dedicated analog peripherals positions the device for digital LED drivers, LLC/Sepic control loops and battery-fuel-gauge co-processors.
Typical applications span LED lighting ballasts, AC-DC and DC-DC converter control loops, BLDC and brushed motor control, solar charge controllers and general-purpose industrial sensor hubs. Designers benefit from the free MPLAB X IDE and XC8 toolchain support, plus Microchip's application libraries for Class-D audio, lighting and power-supply reference designs.
When designing with this device, allocate at least 1 square inch of copper for thermal relief under the UQFN exposed pad and follow Microchip's decoupling guidance of a 100nF + 10uF pair within 3mm of the VDD pins. Programming via ICSP requires dedicated RB6/RB7 pin access, so do not reassign these in the PCB layout.
This page consolidates distributor pricing, drop-in same-family alternatives and practical design notes that go beyond the manufacturer datasheet summary.
Alternatives de remplacement direct pour PIC16F1778T-I/MX — 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 PIC16F1778T-I/MX (même facteur de forme et même empreinte) — différant par Core Architecture, Package, Operating Temperature, Program Memory (Flash), ADC.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F1778-I/MX
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16F1776T-I/MX
✅ Remplacement direct✓ En stock
$1.82 / unité
Voir la fiche technique →PIC16F1769-I/SO
✅ Remplacement direct✓ En stock
$1.12 / unité
Voir la fiche technique →PIC16F1778T-I/MX Valeurs maximales et caractéristiques électriques
| Product Family | PIC16(L)F177X |
| Core Architecture | 8-bit PIC enhanced mid-range |
| CPU Speed (FOSC) | 32 MHz (200 ns instruction cycle) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data Memory (RAM) | 2 KB |
| ADC | 10-bit |
| Boîtier | 28-UQFN (MX), 6x6 mm |
| Type de montage | Surface Mount |
| Nombre de broches | 28 |
| Température de fonctionnement | -40 C to +85 C (Industrial) |
| Statut RoHS | Compliant |
| Reel / Tape | Tape & Reel (T suffix) |
| Peripheral Highlights | Op amps, comparators, slope compensation, configurable logic, PWM |
Configuration des broches de PIC16F1778T-I/MX
| Broche 1 | RA0/AN0 — Analog input 0 / digital I/O RA0 |
| Broche 2 | RA1/AN1 — Analog input 1 / digital I/O RA1 |
| Broche 3 | RA2/AN2 — Analog input 2 / digital I/O RA2 |
| Broche 4 | RA3/AN3 — Analog input 3 / digital I/O RA3 |
| Broche 5 | RA4/AN4 — Analog input 4 / digital I/O RA4 |
| Broche 6 | RA5/AN5 — Analog input 5 / digital I/O RA5 |
| Broche 7 | RA6 — Digital I/O RA6 |
| Broche 8 | RA7 — Digital I/O RA7 |
| Broche 9 | VSS — Ground reference |
| Broche 10 | VDD — Positive supply voltage |
| Broche 11 | RB0/AN12 — Analog input 12 / digital I/O RB0 |
| Broche 12 | RB1/AN10 — Analog input 10 / digital I/O RB1 |
| Broche 13 | RB2/AN8 — Analog input 8 / digital I/O RB2 |
| Broche 14 | RB3/AN9 — Analog input 9 / digital I/O RB3 |
| Broche 15 | RB4/AN11 — Analog input 11 / digital I/O RB4 |
| Broche 16 | RB5 — Digital I/O RB5 |
| Broche 17 | RB6/PGC — ICSP clock / digital I/O RB6 |
| Broche 18 | RB7/PGD — ICSP data / digital I/O RB7 |
| Broche 19 | RC0 — Digital I/O RC0 |
| Broche 20 | RC1 — Digital I/O RC1 |
| Broche 21 | RC2 — Digital I/O RC2 |
| Broche 22 | RC3 — Digital I/O RC3 |
| Broche 23 | RC4 — Digital I/O RC4 |
| Broche 24 | RC5 — Digital I/O RC5 |
| Broche 25 | RC6 — Digital I/O RC6 |
| Broche 26 | RC7 — Digital I/O RC7 |
| Broche 27 | MCLR — Master clear reset (active-low) |
| Broche 28 | EP — Exposed thermal pad (connect to VSS) |
Applications typiques
PIC16F1778T-I/MX convient pour 6 applications: LED Lighting Ballast Control, Switch-Mode Power Supply (SMPS) Control, BLDC and Brushed Motor Control, Battery Charging and Fuel Gauging, Solar Charge Controller, Industrial Sensor Hub / General-Purpose Control.
LED Lighting Ballast Control
The PIC16F1778T-I/MX is a strong fit for digital LED ballasts because it combines 32MHz FOSC, 28KB flash, multiple high-resolution PWM channels, on-chip operational amplifiers, and comparators on a single die. With these peripherals a designer can implement closed-loop constant-current control, color-mixing algorithms, and DMX or DALI communication in firmware without external analog ICs. The 28-UQFN (MX) 6x6 mm footprint suits compact bulb and downlight form factors, while the industrial -40C to +85C temperature grade covers indoor and outdoor luminaires. Designers commonly pair the part with Microchip's application note reference firmware for dim-to-warm and flicker-free PWM.
Recommandé
Switch-Mode Power Supply (SMPS) Control
For AC-DC and DC-DC converter control, the PIC16F1778T-I/MX offers dedicated slope-compensation hardware, configurable logic cells, and high-speed comparators that close the current-mode control loop deterministically at the 32MHz instruction rate. The 28KB flash accommodates full state-machine firmware plus Look-Up Tables for non-linear control, while the 10-bit ADC handles output voltage sensing and input brown-out detection. The UQFN-28 (MX) 6x6 mm package with exposed thermal pad helps dissipate the small losses from internal logic, and the industrial temperature grade suits industrial auxiliary supplies, USB-PD adapters and Class-D audio rails.
Recommandé
BLDC and Brushed Motor Control
The PIC16F1778T-I/MX suits both brushed DC and brushless DC (BLDC) motor control because it exposes multiple PWM/capture/compare channels and high-speed comparators that can be configured for back-EMF zero-crossing detection. With 28KB flash the firmware fits sensorless trapezoidal or simple FOC commutation tables, while 2KB RAM holds the state machine and current loop buffers. The 28-UQFN (MX) 6x6 mm footprint integrates cleanly into small appliance and PCB-mounted motor hubs, and the industrial -40C to +85C rating supports HVAC actuators, fans, pumps, and small e-mobility controllers.
Recommandé
Battery Charging and Fuel Gauging
Lithium-ion, lead-acid and NiMH charging algorithms map well to the PIC16F1778T-I/MX thanks to its on-chip 10-bit ADC, op amps and comparators for cell voltage and current sensing, plus 28KB flash for charging state machines and protection logic. Designers can implement CC/CV profiles, temperature fold-back and end-of-charge detection without external analog front-ends. The UQFN-28 (MX) 6x6 mm package enables compact battery-management boards for power tools, e-bikes, and uninterruptible supplies, and the industrial temperature grade supports outdoor and automotive-cabin charging nodes.
Recommandé
Solar Charge Controller
Small photovoltaic charge controllers benefit from the PIC16F1778T-I/MX because the device combines PWM generation for MPPT switching, ADC channels for panel and battery voltage sensing, and configurable logic for synchronous rectification timing. The 28KB flash hosts MPPT lookup logic and protection state machines, while the UQFN-28 (MX) 6x6 mm package enables compact IP65-rated outdoor enclosures. The industrial -40C to +85C rating handles the wide diurnal temperature swings of rooftop solar nodes, and Microchip's application notes provide firmware reference designs for PWM and incremental-conductance MPPT.
Recommandé
Industrial Sensor Hub / General-Purpose Control
As a general-purpose controller, the PIC16F1778T-I/MX aggregates analog sensor inputs through its 10-bit ADC and op amps, processes them in firmware, and drives digital outputs via PWM and GPIO. The 28KB flash handles protocol stacks (Modbus RTU, LIN, custom UART), while 2KB RAM supports circular buffers for sensor data logging. The UQFN-28 (MX) 6x6 mm footprint drops onto small industrial sensor PCBs for HVAC, building automation, and factory-floor modules, and the -40C to +85C industrial temperature grade satisfies most indoor and sheltered outdoor installations.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16F1778T-I/MX — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16F1778-I/MX | PIC16F1776T-I/MX | PIC16F1769-I/SO |
|---|---|---|---|---|
| Package | 28-UQFN (MX) 6x6 mm | 28-UQFN (MX) 6x6 mm - same | 28-UQFN (MX) 6x6 mm - same | 28-SOIC - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Clock | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
| Packaging Format | Tape & Reel | Tray | Tape & Reel | Tube |
| Pin Count | 28 | 28 | 28 | 28 |
| Lifecycle Status | Active | Active | Active | Active |
Principaux différenciateurs
- Tape-and-reel packaging for high-volume SMT (vs PIC16F1778-I/MX)
- Same silicon as PIC16F1778 tray version (vs PIC16F1776T-I/MX)
- Integrated Intelligent Analog peripherals (vs PIC16F1769-I/SO)
Notes de conception
Place a 100nF ceramic bypass capacitor and a 10uF bulk capacitor within 3 mm of the VDD/VSS pins of the PIC16F1778T-I/MX. The 28-UQFN (MX) 6x6 mm package exposes a thermal pad on pin 28 that must be soldered to a copper pour connected to VSS to provide both mechanical strength and a low-impedance ground return. Without the thermal pad soldered, the part may exceed its junction temperature under sustained PWM and ADC activity.
RB6 and RB7 are shared between general-purpose I/O and ICSP clock/data, so they must not be reassigned exclusively to peripherals if in-circuit programming is required. Add 4.7k pull-up resistors on MCLR to ensure reliable reset entry, and configure the configuration bits to enable the internal weak pull-ups on RB0-RB5 only if external hardware does not already bias those lines. Misconfigured configuration bits can lock the device out of ICSP.
Take advantage of the PIC XLP sleep modes by switching the CPU clock to LFINTOSC (31 kHz) or Sleep (deep sleep) when the firmware loop idles. For battery-powered designs, the on-board peripherals can be selectively disabled in firmware via the PMD register to drop quiescent current below 1 uA between ADC conversions. Average current for a 1 Hz wake-and-measure duty cycle is typically tens of microamps, suiting multi-year coin-cell sensor nodes.
Informations de conformité
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C) only; for automotive AEC-Q100 qualified designs choose the PIC16F1778 automotive variant.
