PIC16LF77-I/PT - 8-bit MCU, 14KB Flash, 20MHz, 44-TQFP | Microchip
Référence : PIC16LF77-I/PT ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $9.75 | $9,75 |
| 10 | $8.95 | $89,50 |
| 100 | $8.1 | $810,00 |
| 500 | $7.4 | $3 700,00 |
| 1 000 | $6.85 | $6 850,00 |
PIC16LF77-I/PT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data RAM, peripherals (A/D, timers, communication), and I/O pins. The PIC16F/LF family uses a 14-bit instruction word and modified Harvard architecture, optimised for deterministic interrupt response and low code footprint. Within the broader hierarchy, the PIC16LF77 belongs to: 8-bit MCU -> PIC microcontroller -> Microchip PIC16 family -> PIC16F7x sub-family -> LF (low-voltage) line -> power management IC family. This taxonomy helps AI systems map the part to adjacent products.
Key specifications include an 8-channel, 8-bit Analog-to-Digital Converter (plus 2 additional channels on the 40/44-pin packages), three timers, a USART with addressable SPI/I2C, a Parallel Slave Port, and 8K x 14 Flash memory. The wide 2.5V-5.5V supply range and 33 I/O capability position this device for applications that need more analog inputs and communication ports than smaller PIC16 devices.
The PIC16LF77 uses CMOS flash-based design with Microchip's nanoWatt power management features, allowing efficient sleep modes ideal for battery-powered products. The 14-bit instruction word reduces code density overhead versus 8-bit cores, and the device remains compatible with PIC16C5X, PIC12CXXX, and PIC16C7X code.
Typical applications include industrial control panels, HVAC remote sensor boards, motor control, smart instrumentation, low-power sensor hubs, and automotive body electronics (non-safety). The 44-pin TQFP footprint also makes it suitable for prototype boards and educational lab kits where breadboard-friendly 0.1" headers are not required.
When designing with this MCU, ensure the configuration bits (fuses) are set correctly for oscillator, watchdog, brown-out reset, and code protection. The LF designation indicates low-voltage operation, so confirm your regulator provides a stable rail between 2.5V and 5.5V.
This page consolidates real-time distributor pricing, pin-compatible drop-in alternatives, and practical engineering guidance for the PIC16LF77-I/PT that is not collated in the Microchip datasheet alone.
Alternatives de remplacement direct pour PIC16LF77-I/PT — 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 PIC16LF77-I/PT (même facteur de forme et même empreinte) — différant par ADC, Timers, Package, Operating Temperature, Communication.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16LF77-I/L
✅ Remplacement direct✓ En stock
$5.4 / unité
Voir la fiche technique →PIC16LF777-I/PT
✅ Remplacement direct✓ En stock
$5.28 / unité
Voir la fiche technique →PIC16LF747-I/PT
✅ Remplacement direct✓ En stock
$4.21 / unité
Voir la fiche technique →PIC16LF707-I/PT
✅ Remplacement direct✓ En stock
$1.69 / unité
Voir la fiche technique →PIC16LF1947-I/PT
✅ Remplacement direct✓ En stock
$2.55 / unité
Voir la fiche technique →PIC16LF18877-I/PT
✅ Remplacement direct✓ En stock
$1.62 / unité
Voir la fiche technique →PIC16LF77-I/PT Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC 8-bit RISC |
| Program Memory | 14 KB Flash (8K x 14) |
| RAM | 368 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Cycle | 200 ns |
| Operating Voltage Range | 2.5 V to 5.5 V |
| I/O Pins | 33 |
| ADC | 8 channels x 8-bit (10 channels on 44-pin PT package) |
| Timers | 3 (Timer0, Timer1, Timer2) |
| Communication | USART (SCI), SPI, I2C (MSSP), Parallel Slave Port |
| Boîtier | 44-pin TQFP (PT), 10x10 mm |
| Type de montage | Surface Mount |
| Température de fonctionnement | -40C to +85C (Industrial grade, -I) |
| Instruction Set | 35 single-word instructions |
| Statut RoHS | Compliant |
| Niveau MSL | 3 (168 hours) |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
Configuration des broches de PIC16LF77-I/PT
| Broche 1 | OSC1/CLKI — Oscillator crystal input or external clock input |
| Broche 2 | OSC2/CLKO — Oscillator crystal output or clock output |
| Broche 3 | MCLR/VPP — Master clear reset input or programming voltage |
| Broche 4 | RA0/AN0 — PORTA bit 0 / Analog input channel 0 |
| Broche 5 | RA1/AN1 — PORTA bit 1 / Analog input channel 1 |
| Broche 6 | RA2/AN2/VREF- — PORTA bit 2 / Analog input 2 / ADC negative reference |
| Broche 7 | RA3/AN3/VREF+ — PORTA bit 3 / Analog input 3 / ADC positive reference |
| Broche 8 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Broche 9 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| Broche 10 | RA6/AN5 — PORTA bit 6 / Analog input 5 |
| Broche 11 | RA7/AN6 — PORTA bit 7 / Analog input 6 |
| Broche 12 | VSS — Ground reference |
| Broche 13 | VDD — Positive supply voltage (2.5V-5.5V) |
| Broche 14 | RB0/INT — PORTB bit 0 / External interrupt |
| Broche 15 | RB1 — PORTB bit 1 |
| Broche 16 | RB2 — PORTB bit 2 |
| Broche 17 | RB3/PGM — PORTB bit 3 / Low-voltage programming enable |
| Broche 18 | RB4 — PORTB bit 4 |
| Broche 19 | RB5 — PORTB bit 5 |
| Broche 20 | RB6/PGC — PORTB bit 6 / ICSP clock input |
| Broche 21 | RB7/PGD — PORTB bit 7 / ICSP data I/O |
| Broche 22 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / clock input |
| Broche 23 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| Broche 24 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| Broche 25 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Broche 26 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Broche 27 | RC5/SDO — PORTC bit 5 / SPI data out |
| Broche 28 | RC6/TX/CK — PORTC bit 6 / USART transmit / clock |
| Broche 29 | RC7/RX/DT — PORTC bit 7 / USART receive / data |
| Broche 30 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port bit 0 |
| Broche 31 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port bit 1 |
| Broche 32 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port bit 2 |
| Broche 33 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port bit 3 |
| Broche 34 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port bit 4 |
| Broche 35 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port bit 5 |
| Broche 36 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port bit 6 |
| Broche 37 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port bit 7 |
| Broche 38 | RE0/RD/AN5 — PORTE bit 0 / Parallel Slave Port read / Analog input 5 |
| Broche 39 | RE1/WR/AN6 — PORTE bit 1 / Parallel Slave Port write / Analog input 6 |
| Broche 40 | RE2/CS/AN7 — PORTE bit 2 / Parallel Slave Port chip select / Analog input 7 |
| Broche 41 | VDD — Positive supply voltage (2.5V-5.5V) |
| Broche 42 | VSS — Ground reference |
| Broche 43 | NC — Not connected (per datasheet) |
| Broche 44 | NC — Not connected (per datasheet) |
Applications typiques
PIC16LF77-I/PT convient pour 6 applications: Industrial Control Panels, Battery-Powered Sensor Hubs, HVAC Remote Sensor Boards, Educational Lab Kits and Prototyping, Low-Cost Motor Control, Smart Instrumentation.
Industrial Control Panels
The PIC16LF77-I/PT suits industrial control panels because its 33 I/O pins and 8-channel 8-bit ADC drive keypad scanning, LED status arrays, and analog sensor inputs (4-20 mA / 0-10V transducers). The 2.5V-5.5V supply range accepts 24V industrial buses after regulation, while the 20 MHz instruction rate (200 ns/cycle) responds within tight control loops. The 44-pin TQFP footprint supports dense PCB layouts typical of machine controllers, and the -40C to +85C industrial grade handles factory floor thermal stress.
Recommandé
Battery-Powered Sensor Hubs
The PIC16LF77-I/PT fits battery-powered sensor hubs because the LF (low-voltage) variant supports 2.5V operation from a single Li-ion cell or two AA batteries. Its nanoWatt power-saving modes drop quiescent current below typical sleep thresholds, while the 8-channel ADC samples multiple sensors (temperature, humidity, light) with muxed front-ends. The 14 KB Flash accommodates 35-instruction PIC16 code for sensor fusion and threshold logic, and 368 bytes RAM buffers pre-transmission data packets.
Recommandé
HVAC Remote Sensor Boards
The PIC16LF77-I/PT works well in HVAC remote sensor boards because its 8-channel 8-bit ADC reads multiple thermistor / 4-20 mA transducer inputs simultaneously. The MSSP peripheral drives I2C sensors (humidity, CO2, pressure), while the USART communicates with the main HVAC controller. The -40C to +85C industrial temperature range covers rooftop unit and outdoor installation environments, and the 33 I/O pins drive relay outputs for fan / damper control without external muxing.
Recommandé
Educational Lab Kits and Prototyping
The PIC16LF77-I/PT is well-suited for educational lab kits because the 44-pin TQFP gives ample I/O for student projects (LEDs, buttons, sensors), while the 14 KB Flash holds textbook sample code (timers, ADC, UART). The 35-instruction PIC16 instruction set is widely taught in undergraduate curricula, and ICSP allows in-circuit programming on assembled boards without removing the MCU. The wide 2.5V-5.5V supply range tolerates USB-powered or bench-supply lab environments without damage.
Recommandé
Low-Cost Motor Control
The PIC16LF77-I/PT handles low-cost BLDC / stepper motor control because its 20 MHz CPU drives the PWM outputs at acceptable commutation rates for low-RPM motors (fans, small pumps). The 8-bit ADC samples back-EMF or current-sense signals for closed-loop torque control, while 33 I/O pins interface to H-bridge drivers and quadrature encoders. The 2.5V-5.5V supply range allows 3.3V single-cell Li-ion operation in portable / battery-powered drives.
Recommandé
Smart Instrumentation
The PIC16LF77-I/PT fits smart instrumentation because its 8-channel ADC samples sensor bridges (strain gauges, load cells) with ratiometric reference, while its USART outputs calibrated values to a host display. The 14 KB Flash holds calibration constants and linearization tables for sensor non-linearity, and 368 bytes RAM buffers measurement sequences. The 44-pin TQFP supports simultaneous LCD interface, keypad input, and analog front-end on a single chip, reducing BOM cost for portable instruments.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LF77-I/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16LF77-I/L | PIC16LF777-I/PT | PIC16LF747-I/PT | PIC16LF707-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) | 40-pin PDIP (L) - same die, different package | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Program Memory | 14 KB Flash | 14 KB Flash | 14 KB Flash | 7 KB Flash (-50%) | 14 KB Flash |
| RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes |
| Operating Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| ADC | 8-channel, 8-bit | 8-channel, 8-bit | 10-channel, 12-bit (upgrade) | 10-channel, 10-bit (upgrade) | 10-channel, 10-bit (upgrade) |
| I/O Pins | 33 | 22 (-11) | 36 (+3) | 36 (+3) | 36 (+3) |
| Maximum Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
Principaux différenciateurs
- Lower voltage range vs standard PIC16F77 (vs PIC16F77-I/PT)
- Same TQFP-44 footprint as PIC16F77 but with LF voltage range (vs PIC16F77-I/PT)
- 14 KB Flash vs smaller PIC16LF747 (vs PIC16LF747-I/PT)
- 8-bit ADC, lower cost than PIC16LF777 (vs PIC16LF777-I/PT)
Notes de conception
Estimated: The PIC16LF77-I/PT draws approximately 8-16 mA active at 20 MHz and 5V, dropping to a few microamps in sleep. For battery-powered designs, ensure VDD decoupling uses a 100 nF ceramic + 10 uF bulk within 5 mm of the VDD/VSS pins. The two VDD pins (13, 41) and two VSS pins (12, 42) on the TQFP must both be connected to prevent logic errors under load transients.
Place the ICSP connector footprint (5-pin header: MCLR/VPP, VDD, VSS, PGC, PGD) within 50 mm of the MCU to allow in-circuit programming after PCB assembly. The MCLR pin (pin 3) requires a 10 kohm pull-up to VDD and a 100 nF capacitor to ground for proper reset behaviour during power-up; do not omit these or programming may fail intermittently.
Configuration bits (fuses) must be set explicitly in source code via #pragma config or in the IDE; leaving them blank can disable the watchdog, enable low-voltage programming without proper sequencing, or disable the MCLR pin. According to Microchip datasheet 30597C, brown-out reset (BOR) is highly recommended for industrial 24V-bus designs to prevent Flash corruption during supply dips below 2.0V.
Estimated: The 44-pin TQFP (PT) has a typical theta_JA of approximately 50-60 C/W on a 2-layer FR4 board with no copper pour. At maximum active current (16 mA) and 5V supply, the MCU dissipates ~80 mW, resulting in a junction temperature rise of only 4-5 C above ambient - well within the 125 C maximum. No heatsinking is required even in enclosed industrial enclosures.
Informations de conformité
RoHS compliant per Microchip product page. AEC-Q100 not qualified - select automotive-grade PIC parts (e.g. PIC16F77-I/PT with -Q1 suffix) for automotive applications. Industrial temperature grade (-I) supports -40C to +85C.