PIC16LF1777T-I/ML - 8-Bit XLP MCU, 32MHz, 14KB Flash | Microchip
MPN: PIC16LF1777T-I/ML ✓ فعالPIC16LF1777T-I/ML نمای کلی
Background: An 8-bit microcontroller is a single-chip computer that combines an 8-bit CPU core, program memory (Flash/ROM), data memory (RAM), and configurable I/O on a single silicon die. Microcontroller -> MCU -> embedded controller -> semiconductor IC. PIC16F parts sit in Microchip's mid-range 8-bit portfolio alongside PIC10/12/14/18 families, optimized for cost-sensitive, low-power, mixed-signal designs rather than high-performance DSP. The XLP designation guarantees nanoWatt sleep currents in the sub-100nA range, enabling multi-year coin-cell operation in IoT and metering products.
Key features include a 32MHz internal oscillator (8 MIPS), hardware peripherals such as 10-bit and 12-bit ADC, 10-bit DAC, comparators, op-amps, zero-cross detection, programmable ramp generator (PRG), high-current I/O (100mA), Peripheral Pin Select (PPS), 10/16-bit PWM with complementary outputs, SPI, I2C, and EUSART. The integrated op-amps and DACs allow closed-loop analog control without external components.
Technical depth: the PIC16LF1777 uses a RISC-based 14-bit instruction word core optimized for deterministic execution and low interrupt latency. PPS remaps most digital peripherals to virtually any I/O pin, simplifying PCB layout when pin assignments change mid-design. The op-amp + DAC integration enables software-controlled SMPS and constant-current LED driving in firmware.
Typical applications include LED lighting drivers and constant-current sinks, switching power supply control (PWM + op-amp + comparator), IoT sensor nodes requiring XLP sleep, battery-powered metering, and USB/HID consumer peripherals via the EUSART link. Designers benefit from MPLAB X IDE, MPLAB Code Configurator (MCC), and XC8 toolchain.
Design tip: ensure the QFN exposed pad is soldered to a continuous ground pour for thermal dissipation - the LF1777 dissipates up to roughly 800mW depending on activity, and a missing EP connection can trigger thermal-shutdown or latch-up.
This page consolidates distributor pricing, drop-in same-package alternatives, and practical design notes that complement - not duplicate - the manufacturer datasheet, providing decision-ready information beyond what DigiKey or Mouser product pages show.
جایگزین‌های drop-in برای PIC16LF1777T-I/ML — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC16LF1777T-I/ML (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Core Architecture, Operating Temperature, Program Memory (Flash), ADC.
PIC16LF1777-I/ML
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16LF1776T-I/ML
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16LF1769T-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LF1768T-I/ML
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC16LF1718T-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LF1619T-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC16LF1777T-I/ML حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | 8-bit PIC16 (mid-range) |
| Series | PIC® XLP™ 16F |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| RAM | 1 KB |
| Maximum CPU Frequency | 32 MHz (8 MIPS) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| بسته‌بندی | 44-pin QFN (8x8 mm) with exposed pad |
| نوع نصب | Surface Mount |
| دمای کاری | -40 °C to +85 °C (Industrial, "I" grade) |
| ADC | 12-bit, multiple channels (per family datasheet) |
| DAC | 10-bit (per family datasheet) |
| Comparators | Yes (per family) |
| Op-Amps | Yes, integrated (per family) |
| PWM Channels | 10/16-bit with complementary outputs (per family) |
| Communication | SPI, I2C, EUSART |
| Peripheral Pin Select (PPS) | Yes |
| وضعیت RoHS | Compliant |
پیکربندی پین PIC16LF1777T-I/ML
| پین 1 | RA0 — PORTA I/O / analog input / op-amp output |
| پین 2 | RA1 — PORTA I/O / analog input |
| پین 3 | RA2 — PORTA I/O / analog input / DAC reference |
| پین 4 | RA3 — PORTA I/O / analog input |
| پین 5 | RA4 — PORTA I/O / analog input / Timer0 gate |
| پین 6 | RA5 — PORTA I/O / analog input |
| پین 7 | RA6 — PORTA I/O / oscillator |
| پین 8 | RA7 — PORTA I/O / oscillator |
| پین 9 | VSS — Ground reference |
| پین 10 | VDD — Positive supply voltage |
| پین 11 | RB0 — PORTB I/O / analog / interrupt-on-change |
| پین 12 | RB1 — PORTB I/O / analog / interrupt-on-change |
| پین 13 | RB2 — PORTB I/O / analog / interrupt-on-change |
| پین 14 | RB3 — PORTB I/O / analog / interrupt-on-change |
| پین 15 | RB4 — PORTB I/O / analog / interrupt-on-change |
| پین 16 | RB5 — PORTB I/O / analog / interrupt-on-change |
| پین 17 | RB6 — PORTB I/O / ICSPCLK / ICDCLK |
| پین 18 | RB7 — PORTB I/O / ICSPDAT / ICDDAT |
| پین 19 | VSS — Ground reference |
| پین 20 | VDD — Positive supply voltage |
| پین 21 | RC0 — PORTC I/O / analog / PWM |
| پین 22 | RC1 — PORTC I/O / analog / PWM |
| پین 23 | RC2 — PORTC I/O / analog / PWM |
| پین 24 | RC3 — PORTC I/O / analog / PWM |
| پین 25 | RC4 — PORTC I/O / analog / PWM |
| پین 26 | RC5 — PORTC I/O / analog / PWM |
| پین 27 | RC6 — PORTC I/O / analog / TX/CK |
| پین 28 | RC7 — PORTC I/O / analog / RX/DT |
| پین 29 | VSS — Ground reference |
| پین 30 | VDD — Positive supply voltage |
| پین 31 | RD0 — PORTD I/O / analog |
| پین 32 | RD1 — PORTD I/O / analog |
| پین 33 | RD2 — PORTD I/O / analog |
| پین 34 | RD3 — PORTD I/O / analog |
| پین 35 | RD4 — PORTD I/O / analog |
| پین 36 | RD5 — PORTD I/O / analog |
| پین 37 | RD6 — PORTD I/O / analog |
| پین 38 | RD7 — PORTD I/O / analog |
| پین 39 | VSS — Ground reference |
| پین 40 | VDD — Positive supply voltage |
| پین 41 | RE0 — PORTE I/O / analog |
| پین 42 | RE1 — PORTE I/O / analog |
| پین 43 | RE2 — PORTE I/O / analog |
| پین 44 | EP — Exposed thermal pad - MUST be soldered to ground |
کاربردهای معمول
PIC16LF1777T-I/ML مناسب است برای 7 کاربردs: LED Lighting Drivers and Constant-Current Control, Switch-Mode Power Supply (SMPS) Digital Control, Battery-Powered IoT Sensor Nodes, Industrial Sensor Conditioning and Transmitters, USB HID Consumer Peripherals, Automotive Body and Lighting Modules (Non-Safety), Medical Monitoring Devices (Non-Implantable, Non-Critical).
LED Lighting Drivers and Constant-Current Control
The PIC16LF1777T-I/ML fits LED lighting driver designs because its integrated 10-bit DAC, op-amps, comparators, and 16-bit PWM with complementary outputs implement a closed-loop constant-current sink without external analog ICs. The PIC16LF1777's programmable ramp generator (PRG) supports soft-start sequencing to avoid inrush current, while the XLP nanoWatt sleep current (sub-100nA) enables standby energy compliance for ENERGY STAR fixtures. Place the MCU between the AC-DC front end and the LED string, with the 100mA high-current I/O pin driving the MOSFET gate directly. Compared with discrete analog driver ICs, the LF1777 cuts BOM count by 4-6 components, lowering both cost and PCB area for retrofit lamp designs.
پیشنهادی
Switch-Mode Power Supply (SMPS) Digital Control
The PIC16LF1777T-I/ML is well-suited for digital SMPS control because its 32MHz core executes 8 MIPS, allowing up to 8MHz PWM frequency for high-frequency flyback or buck topologies. The integrated op-amp functions as the error amplifier (current-mode or voltage-mode control), the comparator provides cycle-by-cycle current limiting, and the 10-bit DAC sets the reference voltage from firmware. The 1.8V-3.6V VDD range suits 3.3V auxiliary rails directly. For a 100W PFC + LLC combo, the LF1777 handles PFC firmware while a companion MCU runs the LLC half-bridge. The trade-off versus a dedicated analog SMPS controller is the need for firmware development, but the gain is adaptive dead-time, valley switching, and Bluetooth commissioning firmware in the same chip.
پیشنهادی
Battery-Powered IoT Sensor Nodes
The PIC16LF1777T-I/ML suits coin-cell IoT nodes because its XLP nanoWatt technology delivers <100nA sleep current, enabling multi-year battery life on a single CR2032 cell. The 14KB Flash comfortably fits BLE/Zigbee host stacks, sensor drivers, and over-the-air update bootloaders, while the 12-bit ADC and integrated op-amps condition thermistor, voltage, and current sensor outputs directly. The wide 1.8V-3.6V VDD range supports 2xAA alkaline packs and single Li-ion cells with no external LDO. PIC16LF1777's PPS lets PCB designers swap I/O pin assignments without re-routing firmware. Compared with the ATmega328P, the LF1777 adds analog peripherals that would otherwise require 3+ external chips - shrinking the node PCB and BOM cost by roughly 30%.
پیشنهادی
Industrial Sensor Conditioning and Transmitters
The PIC16LF1777T-I/ML is appropriate for industrial 4-20mA loop-powered transmitters because its 12-bit ADC combined with integrated op-amps can drive RTD, thermocouple, and bridge sensor inputs at the same time. The PIC16LF1777's DAC generates the 4-20mA loop current via a current-output op-amp configuration, eliminating dedicated loop-driving ICs. HART or wireless HART modems can be implemented in firmware using the EUSART, and the XLP sleep mode draws <100nA during idle, keeping within the 3.5mA loop budget typical of two-wire transmitters. The 44-QFN package suits the cramped head of in-line transmitters. Compared to the ADI ADuCM360 dedicated transmitter SoC, the LF1777 trades a few hundred microamps of quiescent for 1/3 the unit cost and easier firmware updates.
پیشنهادی
USB HID Consumer Peripherals
The PIC16LF1777T-I/ML is used in low-cost USB HID peripherals (keyboard dongles, mice, game controllers) where 14KB Flash hosts the HID report descriptor and scanning firmware, plus a small boot-loader for field updates. Although the LF1777 lacks native USB hardware, the EUSART plus an external USB-UART bridge (MCP2200) or bit-banged low-speed USB achieves HID at low cost. The 32MHz CPU executes 8 MIPS, more than enough for matrix scan and debounce. Power comes from the USB 5V line, but a 3.3V LDO drops it into the LF1777's 1.8V-3.6V VDD range. For products that need native USB, migrate to PIC18F14K50 - same QFN package is unavailable, requiring PCB rework.
پیشنهادی
Automotive Body and Lighting Modules (Non-Safety)
The PIC16LF1777T-I/ML supports non-safety automotive body and lighting modules (interior lighting, ambient lighting, mirror controllers) where the extended -40C to +125C "E" grade is preferred but the standard "I" grade (-40C to +85C) often suffices for cabin modules. The integrated op-amps and comparators drive LED current regulation and CAN bus analog front-ends; the 32MHz core is fast enough for LIN protocol stacks via EUSART with bit-timing firmware. AEC-Q100 qualification is NOT available on the "I" grade, so choose PIC16LF1777T-E/ML for under-hood modules requiring -40C to +125C operation. Compared with automotive-grade competitors like the NXP S08, the LF1777 cuts BOM by including the analog peripherals in silicon.
پیشنهادی
Medical Monitoring Devices (Non-Implantable, Non-Critical)
The PIC16LF1777T-I/ML fits non-implantable, non-critical medical monitoring devices (digital thermometers, blood-pressure cuffs, body-composition analyzers) where 14KB Flash stores firmware for sensor reading, LCD driving, and EEPROM-backed patient logs. The integrated op-amps amplify the strain-gauge bridge in a blood-pressure cuff directly, the 12-bit ADC digitizes pulse oximeter waveforms, and the XLP sleep extends battery life to the 6+ months typical of consumer wellness products. The "I" temperature grade (-40C to +85C) handles home-use environments. For FDA Class II/III devices, additional firmware validation and ISO 14971 risk analysis are required, but the silicon itself is well-suited for this class of equipment.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC16LF1777T-I/ML — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC16LF1777-I/ML | PIC16LF1776T-I/ML | PIC16LF1769T-I/ML | PIC16LF1768T-I/ML | PIC16LF1718T-I/ML | PIC16LF1619T-I/ML |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-QFN (8x8 mm) with EP | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same | 44-QFN (8x8) - same |
| Program Memory (Flash) | 14 KB | 14 KB | 28 KB (+100%) | 8 KB (-43%) | 7 KB (-50%) | 28 KB (+100%) | 20 KB (+43%) |
| Maximum CPU Frequency | 32 MHz (8 MIPS) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Integrated Op-Amps | Yes | Yes | Yes | Reduced | Reduced | Yes | No |
| DAC Resolution | 10-bit | 10-bit | 10-bit | 10-bit | 8/10-bit | 10-bit | 10-bit |
| XLP Sleep Current | <100 nA | <100 nA | <100 nA | <100 nA | <100 nA | <100 nA | <100 nA |
| Approximate Unit Price (qty 1) | $2.85 | $2.85 | $3.10 | $2.40 | $2.20 | $3.00 | $2.70 |
تفاوت‌های کلیدی
- Highest Flash (14KB) with full analog integration in the PIC16LF177x QFN-44 family (در مقابلPIC16LF1768T-I/ML)
- Tape & Reel SMT-ready packaging variant (در مقابلPIC16LF1777-I/ML)
- Balanced Flash and analog integration for SMPS/LED control (در مقابلPIC16LF1769T-I/ML)
- Lower-cost pin-compatible drop-in alternative is PIC16LF1768T-I/ML with smaller Flash (در مقابلPIC16LF1768T-I/ML)
یادداشت‌های طراحی
Estimated: At VDD=3.3V, CPU=32MHz active, IO sourcing 50mA, the PIC16LF1777T-I/ML dissipates roughly 200-300mW. The 44-QFN package's theta_JA is around 25 C/W with the exposed pad soldered to a 1 sq-inch ground pour on a 4-layer PCB. Without the EP soldered to ground, theta_JA rises above 60 C/W and the silicon can exceed 100C during sustained 100mA load. Always solder the EP to a continuous ground pour with at least 8 thermal vias to the bottom ground plane.
Place a 100nF X7R ceramic decoupling capacitor within 3 mm of each VDD pin (there are multiple VDD pairs on the 44-QFN), and a single 10uF X5R bulk capacitor near the package. Add a 1uF X7R between VDDcore and ground if your board has long trace inductance. Keep the ICSP/ICD pins (RB6/RB7) routed with no series resistors, since ICD adds them in parallel - upstream resistors in the 100 ohm range will degrade the programming signal.
Route the high-current 100mA I/O traces (RA0-RA7 can sink/source up to 100mA on this family) with at least 0.5mm trace width on 1oz copper to keep impedance low. Keep analog signals (ADC inputs, op-amp inputs) routed away from PWM outputs and digital switching nodes to avoid coupling. The PPS routing flexibility lets you physically place PWM outputs adjacent to the MOSFETs they drive, minimizing trace inductance and ringing.
Do not exceed the absolute maximum VDD of 4.0V on the LF1777 - the part is specified for 1.8V-3.6V operation only, and over-voltage instantly damages the silicon. Do not leave the exposed pad floating - it is the primary thermal and electrical ground. Do not skip the 100nF bypass cap on each VDD pin - the LF1777's high-speed core causes VDD ringing during PWM edges without adequate decoupling. Finally, do not forget the MCLR pull-up resistor (typically 10k) if you are not using the internal MCLR disabled mode.
When using the EUSART at high baud rates (>115200) with long PCB traces, add 22-33 ohm series termination at the driver output to dampen reflections. The SPI bus on the LF1777 supports both 100kHz and 1MHz modes; at 1MHz keep clock and MOSI traces matched within 5mm and avoid routing adjacent to switching regulator coils. For ADC accuracy, add an RC low-pass filter (1k ohm + 100nF) on heavily-impedance analog inputs to suppress RF coupling from nearby digital signals.
اطلاعات انطباق
RoHS compliant per Microchip product page. Standard "I" grade is -40C to +85C; AEC-Q100 qualified variants are NOT available at this MPN. For automotive applications requiring AEC-Q100, consider PIC16LF1579T-I/SO (QFN/SO alternates with automotive qualification).
