PIC16LF1778-I/MX - 28KB Flash 8-bit MCU, 32MHz, 28-UQFN | Microchip
Référence : PIC16LF1778-I/MX ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.58 | $25,80 |
| 100 | $2.3 | $230,00 |
| 500 | $2.05 | $1 025,00 |
| 1 000 | $1.82 | $1 820,00 |
PIC16LF1778-I/MX Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (RAM), and a rich set of peripherals (ADC, PWM, communication interfaces) into one device. Within the broader taxonomy, an 8-bit MCU sits below 16-bit DSC and 32-bit Cortex-M parts in compute power, but offers deterministic behavior, low cost, and extremely low active/standby power — making it the dominant choice in cost-sensitive and battery-powered embedded designs. The PIC16LF1778-I/MX is the 'LF' (low-voltage, low-power Flash) variant of the PIC16F1778, optimized for operation down to 1.8V.
Key features include four 10-bit DACs, four operational amplifiers, two high-speed comparators, a 10-bit ADC with Computation (ADC2), Zero-Cross Detect (ZCD), programmable ramp generator (PRG), Peripheral Pin Select (PPS), 10/16-bit PWMs with complementary outputs, and 100 mA I/O drive capability. Communication interfaces include SPI, I2C, and EUSART with auto-baud detect. On-chip Core Independent Peripherals (CIPs) allow complex functions such as power-factor correction, SMPS control, and capacitive touch sensing to run without CPU intervention.
Architecturally, the PIC16LF1778-I/MX uses Microchip's nanoWatt XLP technology for ultra-low sleep current (down to ~30 nA typical), making it suitable for energy-harvesting and always-on applications. The integrated 32MHz internal oscillator eliminates the need for an external crystal in many designs, reducing BOM cost and PCB area. The device operates from 1.8V to 3.6V across an industrial -40C to +85C temperature range, supporting both consumer and industrial deployments.
Typical applications include LED lighting drivers with dimming and color-mixing control, digital switch-mode power supplies (SMPS), USB Type-C power delivery controllers, battery chargers for Li-ion packs, BLDC and stepper motor control loops, and general-purpose IoT sensor nodes. Designers leverage the integrated op-amps and comparators to build closed-loop current/voltage control without external analog ICs.
When designing with this part, allocate the exposed pad (EP) to a continuous ground pour to meet thermal and electrical performance; the UQFN-28 EP package dissipates heat primarily through this pad. Use Microchip's MPLAB X IDE and XC8 compiler for firmware development, and consult the PIC16(L)F177x datasheet family for shared peripheral programming guidance. For a drop-in alternative with more Flash/RAM, consider PIC16LF1779 in the same UQFN-28 EP footprint.
This page synthesizes distributor pricing, parametric cross-reference data, and practical design notes not consolidated on the manufacturer datasheet, providing an engineering-ready starting point for BOM qualification and component selection.
Alternatives de remplacement direct pour PIC16LF1778-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 PIC16LF1778-I/MX (même facteur de forme et même empreinte) — différant par Package, ADC, Comparators, Low-Power Technology, Operating Temperature.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LF1779-I/MX
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1777-I/MX
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1776-I/MX
✅ Remplacement direct✓ En stock
$1.38 / unité
Voir la fiche technique →PIC16F1778-I/MX
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1778-I/SS
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC16LF1778-I/MX Valeurs maximales et caractéristiques électriques
| Core | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| RAM | 2 KB |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 3.6 V |
| ADC | 10-bit ADC2 (Computation) |
| DAC | 4 x 10-bit DAC |
| Operational Amplifiers | 4 on-chip op-amps |
| Comparators | 2 high-speed comparators |
| PWM Modules | 10/16-bit PWM with complementary outputs |
| Zero-Cross Detect | Yes |
| Programmable Ramp Generator (PRG) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| Communication Interfaces | SPI, I2C, EUSART (auto-baud) |
| I/O Drive Strength | 100 mA high-current I/Os |
| Low-Power Technology | nanoWatt XLP |
| Plage de température de fonctionnement | -40 C to +85 C (Industrial, 'I') |
| Boîtier | 28-pin UQFN (6x6 mm) with exposed pad (MX) |
| Type de montage | Surface Mount |
| Statut RoHS | Compliant |
Configuration des broches de PIC16LF1778-I/MX
| Broche 1 | RA0/AN0/C1IN0-/DAC1OUT/OPA1IN0+ — Bidirectional I/O / Analog input / Comparator input / DAC1 output / Op-amp1 non-inverting input |
| Broche 2 | RA1/AN1/C1IN1-/DAC2OUT/OPA1IN0- — Bidirectional I/O / Analog input / Comparator input / DAC2 output / Op-amp1 inverting input |
| Broche 3 | RA2/AN2/C1IN0+/DAC3OUT/OPA1OUT — Bidirectional I/O / Analog input / Comparator non-inverting input / DAC3 output / Op-amp1 output |
| Broche 4 | RA3/AN3/C1IN1+/DAC4OUT/OPA2IN0+ — Bidirectional I/O / Analog input / Comparator input / DAC4 output / Op-amp2 non-inverting input |
| Broche 5 | RA4/AN4/OPA2IN0-/T0CKI — Bidirectional I/O / Analog input / Op-amp2 inverting input / Timer0 clock input |
| Broche 6 | RA5/AN5/OPA2OUT — Bidirectional I/O / Analog input / Op-amp2 output |
| Broche 7 | RA6/AN6/OPA3IN0+ — Bidirectional I/O / Analog input / Op-amp3 non-inverting input |
| Broche 8 | RA7/AN7/OPA3IN0-/VREF+ — Bidirectional I/O / Analog input / Op-amp3 inverting input / Positive voltage reference |
| Broche 9 | VSS — Ground reference |
| Broche 10 | VDD — Positive supply voltage (1.8V to 3.6V) |
| Broche 11 | RB0/AN8/CCP4/OPA3OUT/SRI — Bidirectional I/O / Analog input / CCP4 PWM / Op-amp3 output / Serial programming data |
| Broche 12 | RB1/AN9/C1IN3-/PWM5/OPA4IN0+ — Bidirectional I/O / Analog input / Comparator input / PWM5 output / Op-amp4 non-inverting input |
| Broche 13 | RB2/AN10/C1IN2-/PWM6/OPA4IN0- — Bidirectional I/O / Analog input / Comparator input / PWM6 output / Op-amp4 inverting input |
| Broche 14 | RB3/AN11/C1IN3+/CCP3/OPA4OUT — Bidirectional I/O / Analog input / Comparator input / CCP3 PWM / Op-amp4 output |
| Broche 15 | RB4/AN12/C2IN0-/SDA/SDI — Bidirectional I/O / Analog input / Comparator2 input / I2C data / SPI data in |
| Broche 16 | RB5/AN13/C2IN1-/RX/DT — Bidirectional I/O / Analog input / Comparator2 input / EUSART RX / EUSART data |
| Broche 17 | RB6/ICSPCLK/SCK/TX/CK — Bidirectional I/O / ICSP clock / SPI clock / EUSART TX / EUSART clock |
| Broche 18 | RB7/ICSPDAT/SDO — Bidirectional I/O / ICSP data / SPI data out |
| Broche 19 | RC0/PWM4/C2IN0+ — Bidirectional I/O / PWM4 output / Comparator2 non-inverting input |
| Broche 20 | RC1/PWM3/C2IN1+ — Bidirectional I/O / PWM3 output / Comparator2 non-inverting input |
| Broche 21 | RC2/AN14/C2IN2-/PWM2 — Bidirectional I/O / Analog input / Comparator2 input / PWM2 output |
| Broche 22 | RC3/AN15/C2IN3-/PWM1 — Bidirectional I/O / Analog input / Comparator2 input / PWM1 output |
| Broche 23 | RC4/C1IN2+/CCP2 — Bidirectional I/O / Comparator1 input / CCP2 PWM |
| Broche 24 | RC5/C1IN3+/CCP1 — Bidirectional I/O / Comparator1 input / CCP1 PWM |
| Broche 25 | RC6/AN16/CCP5 — Bidirectional I/O / Analog input / CCP5 PWM |
| Broche 26 | RC7/AN17 — Bidirectional I/O / Analog input |
| Broche 27 | RE3/MCLR/VPP — Master Clear (reset) input / Programming voltage input |
| Broche 28 | VSS (EP) — Exposed pad - thermal/ground connection (must be soldered to ground plane) |
Applications typiques
PIC16LF1778-I/MX convient pour 6 applications: LED Lighting Driver with Dimming, Digital Switch-Mode Power Supply (SMPS), USB Type-C Power Delivery (PD) Controller, BLDC and Stepper Motor Control, Battery Charger for Li-ion / Li-Po Packs, IoT Sensor Node with Energy Harvesting.
LED Lighting Driver with Dimming
The PIC16LF1778-I/MX is ideal for LED lighting drivers because of its four 10-bit DACs, four integrated op-amps, four 16-bit PWMs with complementary outputs, and Zero-Cross Detect. The on-chip op-amps close current loops for constant-current regulation, while the PRG generates smooth dimming ramps without CPU intervention. Compared to discrete analog controllers, this integration shrinks the BOM and enables firmware-updatable lighting profiles. The 1.8-3.6V supply range supports direct battery or USB-powered fixtures, and nanoWatt XLP technology minimizes standby power when the lamp is off.
Recommandé
Digital Switch-Mode Power Supply (SMPS)
The PIC16LF1778-I/MX is well-suited for digital SMPS control thanks to its high-speed comparators, four 10-bit DACs for reference generation, four op-amps for voltage-mode or current-mode feedback, and 10/16-bit PWMs with programmable dead-band. The Programmable Ramp Generator simplifies slope compensation, while ADC2 (Computation) automates oversampling and average current sensing. This integration eliminates the need for a dedicated PWM controller IC, allowing a single MCU to manage PFC plus a downstream converter stage in a compact design with reduced component count.
Recommandé
USB Type-C Power Delivery (PD) Controller
The PIC16LF1778-I/MX works well as a USB Type-C PD controller with on-the-go (OTG) negotiation thanks to its EUSART with auto-baud, SPI/I2C for PD protocol messaging over FUSB302-style front-ends, and 10-bit ADC2 for VBUS voltage/current monitoring. The four 10-bit DACs generate accurate reference voltages for current-limit thresholds, while the high-current 100 mA I/Os directly drive pull-down / pull-up signaling. PPS pin mapping enables flexible PCB routing, and 1.8-3.6V operation matches PD controller IC supply rails for direct MCU integration without level shifters.
Recommandé
BLDC and Stepper Motor Control
The PIC16LF1778-I/MX suits BLDC and stepper motor control because its four complementary 16-bit PWMs drive half-bridges with programmable dead-band, while the four integrated op-amps sense phase currents via shunt resistors. The high-speed comparators detect BEMF zero-crossings for sensorless trapezoidal commutation, and the Zero-Cross Detect peripheral offloads timing-critical events from the CPU. With 28 KB Flash and 2 KB RAM, the MCU fits full state-machine plus UART telemetry for closed-loop FOC implementations.
Recommandé
Battery Charger for Li-ion / Li-Po Packs
The PIC16LF1778-I/MX is well-matched to single-cell and multi-cell Li-ion / Li-Po charger designs because its four op-amps implement precise CC/CV (constant-current / constant-voltage) loops, the 10-bit ADC2 monitors pack voltage and temperature, and four 10-bit DACs set reference currents per charging phase. The PRG produces safe charging ramp-up curves, while EUSART/SPI/I2C ports drive an OLED status display or SMBus gas-gauge interface. nanoWatt XLP keeps quiescent current low, preserving battery life during storage.
Recommandé
IoT Sensor Node with Energy Harvesting
The PIC16LF1778-I/MX is ideal for always-on IoT sensor nodes because its nanoWatt XLP technology delivers sleep currents in the tens of nA, while the integrated 32 MHz internal oscillator eliminates external crystal cost and quiescent draw. The four op-amps condition low-level sensor outputs, ADC2 provides oversampling for noise-immune measurements, and PPS lets designers reassign peripherals to any I/O pin to ease PCB routing. EUSART/SPI/I2C interface to sub-GHz or BLE modules for wireless telemetry, all operating from a 1.8-3.6V harvested supply.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LF1778-I/MX — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LF1779-I/MX | PIC16LF1777-I/MX | PIC16LF1776-I/MX | PIC16F1778-I/MX |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-UQFN (6x6 mm) with EP | 28-UQFN (6x6 mm) with EP - same | 28-UQFN (6x6 mm) with EP - same | 28-UQFN (6x6 mm) with EP - same | 28-UQFN (6x6 mm) with EP - same |
| Program Memory (Flash) | 28 KB | 56 KB (+100%) | 14 KB (-50%) | 28 KB (same) | 28 KB (same) |
| RAM | 2 KB | 4 KB (+100%) | 1 KB (-50%) | 2 KB (same) | 2 KB (same) |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V (same) | 2.3 V to 5.5 V (higher) |
| Max CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| On-chip Op-Amps | 4 | 4 (same) | 4 (same) | 4 (same) | 4 (same) |
| On-chip DACs | 4 x 10-bit | 4 x 10-bit (same) | 4 x 10-bit (same) | 4 x 10-bit (same) | 4 x 10-bit (same) |
Principaux différenciateurs
- Only 28-UQFN variant in family with 28 KB Flash + 2 KB RAM at this exact pinout (vs PIC16LF1777-I/MX)
- Integrated four op-amps and four DACs eliminate external analog ICs (vs PIC16LF1709-I/ML)
- 1.8 V minimum VDD enables single-cell Li-ion and energy-harvesting operation (vs PIC16F1778-I/MX)
Notes de conception
The 28-UQFN 'MX' package dissipates heat primarily through its exposed pad (EP, pin 28). The EP MUST be soldered to a continuous ground plane of at least 100 mm^2 (10 mm x 10 mm) to meet the datasheet's thermal resistance ratings (theta_JA ~30 C/W on a 4-layer JEDEC test board). For applications dissipating more than ~0.5 W, increase the EP copper area, add thermal vias to internal ground planes, and consider airflow. Estimated: at 32 MHz with all peripherals active in a sealed enclosure at 60 C ambient, junction temperature rise is roughly 5-8 C above ambient under typical load.
Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 10), with a 1 uF bulk capacitor on the same rail within 5 mm. For designs using ADC2 or op-amps with sub-millivolt accuracy, add a 10 uF tantalum or polymer bulk capacitor on AVDD (if used) and route analog/digital grounds as separate planes joined only at the EP. Keep VDD rise time under 50 ms per the datasheet brown-out requirements to avoid unintended BOR events during power-up.
Use Peripheral Pin Select (PPS) to remap digital functions (UART, SPI, PWM) to any available I/O pin, simplifying PCB routing when analog and digital signals cross. Reserve RA4 (open-drain) and the analog-capable pins for ADC / DAC / op-amp functions to avoid digital injection noise. Keep op-amp feedback traces short (<5 mm) and guarded with a ground trace to minimize stray pickup; route high-current PWM outputs (100 mA capable) with at least 0.5 mm trace width and length-matched for complementary pairs.
Do not leave MCLR (pin 27) floating - it must be tied to VDD through a 10 kohm resistor or driven by the debugger. Failing to configure unused I/O pins as outputs (rather than inputs) can cause excessive supply current due to floating CMOS inputs. When migrating from PIC16F1778 to PIC16LF1778, verify that any 5V peripherals are level-shifted down to 3.3V; the LF variant does not tolerate 5V inputs. Finally, always configure the PPS lock register to prevent accidental peripheral reassignment in noisy EMI environments.
Informations de conformité
RoHS compliant per Microchip product page and distributor listings. Industrial temperature grade ('I' suffix, -40C to +85C). Not AEC-Q100 qualified — choose PIC16F1778-E/MX or automotive-grade equivalents for automotive applications.
