PIC16LF1764-I/ST - 8-Bit 32MHz 7KB Flash MCU | Microchip
MPN: PIC16LF1764-I/ST ✓ Hoạt độngPIC16LF1764-I/ST Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a mix of digital and analog peripherals. The PIC16 family uses a RISC-based 8-bit core with a Harvard architecture and a 14-bit instruction word, positioned between simple 8-bit MCUs and 16-bit DSPs/dsPICs. XLP (eXtreme Low Power) is Microchip's branding for sub-microamp sleep currents, making LF devices the right hypernym when designers search for "low-power 8-bit MCU" or "nanoWatt XLP microcontroller".
Key features of the PIC16LF1764 include a 10-bit ADC with computation (ADC2), two operational amplifiers, zero-cross detect, high-current I/O, configurable logic cells, and peripherals for closed-loop control of LED lighting, power conversion, and motor drive. The 14-pin TSSOP package keeps board area small while exposing up to 12 I/O pins, and the industrial -40C to +85C temperature range allows deployment in factory and outdoor enclosures.
Architecture-wise the PIC16LF1764 uses the enhanced mid-range 8-bit core with a hardware multiplier, vectored interrupts, and an internal 32 MHz oscillator that lets designers omit an external crystal in many cost-sensitive applications. Peripheral Pin Select (PPS) is not present on this 14-pin device, so the user assigns functions to fixed pins per the datasheet pinout table.
Typical applications include LED lighting and luminaire control, switched-mode power supply secondary-side control, brushless DC (BLDC) fan and small motor drive, sensor conditioning with on-chip op-amps, and low-power IoT edge nodes. Designers typically pair this MCU with discrete MOSFET drivers, current-sense amplifiers, and isolated communications such as UART-to-MODBUS bridges.
When laying out the board, place the VDDCORE bypass capacitor (typically 0.1 uF) as close as possible to pin 14, and keep the analog AVSS/VSS split intact if the application relies on ADC accuracy. With Flash self-programming, debug via ICD 3 or PICkit 4, and XLP sleep currents well below 1 uA, the PIC16LF1764 is a strong fit for energy-conscious embedded designs.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1764-I/ST — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LF1764-I/ST (cùng hình factor và footprint) — khác nhau ở Operating Temperature, Package, Core Architecture, ADC, Program Memory (Flash).
PIC16LF1765-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1705-I/ST
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1764-I/ST
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF1764-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1764-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1574-I/ST
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1764-I/ST Tỷ lệ tối đa & tính chất điện
| Architecture | 8-bit PIC enhanced mid-range core (Harvard, 14-bit instruction word) |
| Family | PIC® XLP™ 16F (PIC16(L)F176x series) |
| Max CPU Speed | 32 MHz |
| Program Memory (Flash) | 7 KB (4K x 14 words) |
| Data RAM | 512 bytes |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 12 (max) |
| ADC | 10-bit with Computation (ADC2), up to 8 channels |
| Op-Amps | 2 on-chip operational amplifiers |
| Zero-Cross Detect | Yes (AC zero-crossing detection peripheral) |
| High-Current I/O | Yes (source/sink up to 100 mA on selected pins per datasheet) |
| Communication | I2C, SPI, EUSART (asynchronous/synchronous UART) |
| Hộp | 14-pin TSSOP (ST) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, "I") |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 1 (unlimited floor life at <30C/85% RH) |
Cấu hình chân PIC16LF1764-I/ST
| Chân 1 | RA5/SOSC1 — Bidirectional I/O / secondary oscillator input |
| Chân 2 | RA4/SOSC2 — Bidirectional I/O / secondary oscillator output |
| Chân 3 | RA3/MCLR/VPP — Bidirectional I/O / Master Clear (Reset) input / programming voltage |
| Chân 4 | RA2/AN2 — Bidirectional I/O / analog input channel 2 |
| Chân 5 | RA1/AN1/OPA1IN- — Bidirectional I/O / analog input channel 1 / op-amp 1 inverting input |
| Chân 6 | RA0/AN0/OPA1OUT — Bidirectional I/O / analog input channel 0 / op-amp 1 output |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RB7/AN11/ICSPDAT — Bidirectional I/O / analog input channel 11 / ICD data |
| Chân 9 | RB6/AN10/ICSPCLK — Bidirectional I/O / analog input channel 10 / ICD clock |
| Chân 10 | RB5/AN9 — Bidirectional I/O / analog input channel 9 |
| Chân 11 | RB4/AN8 — Bidirectional I/O / analog input channel 8 |
| Chân 12 | RB3/CCP2 — Bidirectional I/O / Capture/Compare/PWM channel 2 |
| Chân 13 | RB2/CCP1 — Bidirectional I/O / Capture/Compare/PWM channel 1 |
| Chân 14 | VDD — Positive supply voltage 1.8 V to 3.6 V |
Ứng dụng tiêu biểu
PIC16LF1764-I/ST phù hợp cho 6 Áp dụngs: LED Lighting and Luminaire Control, Switched-Mode Power Supply (SMPS) Secondary-Side Control, BLDC Fan and Small Motor Drive, Battery-Powered IoT Sensor Nodes, Industrial Sensor Conditioning, Smart Home and Building Automation.
LED Lighting and Luminaire Control
The PIC16LF1764-I/ST fits LED lighting control because its on-chip op-amps, zero-cross detect, and high-current I/O implement closed-loop constant-current drive without external analog ICs. The 32 MHz core runs control-loop math at sub-microsecond intervals, while XLP sleep currents below 1 uA keep standby quiescent draw minimal for always-on luminaires. The 10-bit ADC with computation handles dimming feedback, while the 1.8-3.6 V range matches single-cell Li-ion or 3.3 V regulated supplies.
Được đề xuất
Switched-Mode Power Supply (SMPS) Secondary-Side Control
On the secondary side of an isolated SMPS, the PIC16LF1764-I/ST regulates output voltage and current using its 10-bit ADC2 to sense feedback signals and its high-current I/O to drive synchronous-rectifier MOSFETs or optocouplers. The 1.8-3.6 V VDD matches typical secondary-side 3.3 V rails, and the TSSOP-14 footprint saves board area in dense adapter designs. The integrated op-amp can build a Type 2 compensator directly on-chip, reducing BOM cost versus an external op-amp implementation.
Được đề xuất
BLDC Fan and Small Motor Drive
The PIC16LF1764-I/ST drives small brushless DC (BLDC) fans and pumps by combining its CCP modules for PWM generation, on-chip op-amps for current sensing, and zero-cross detect for back-EMF commutation. The 32 MHz core supports field-oriented control (FOC) lite algorithms on 2-pole and 4-pole motors, while 12 I/O pins comfortably host three-phase PWM, Hall sensor inputs, tachometer output, and UART diagnostics. The industrial -40C to +85C range is ideal for fan-tray and HVAC blower designs.
Được đề xuất
Battery-Powered IoT Sensor Nodes
For battery-powered IoT edge nodes, the PIC16LF1764-I/ST's XLP sleep mode and 1.8-3.6 V operation extend coin-cell and Li-ion lifetimes by an order of magnitude versus non-LP PICs. The 10-bit ADC2 reads analog sensors (temperature, pressure, gas) directly, while the EUSART and SPI peripherals interface to wireless modules such as LoRa or BLE transceivers. With Flash self-programming, OTA-style firmware updates are supported, and the TSSOP-14 keeps the board under 50 mm^2.
Được đề xuất
Industrial Sensor Conditioning
The PIC16LF1764-I/ST integrates two on-chip op-amps that implement front-end signal conditioning for bridge sensors (load cells, strain gauges), thermistors, and 4-20 mA current loops. The 10-bit ADC with computation (ADC2) oversamples and averages for higher effective resolution, while the EUSART outputs a digital value over RS-485 or RS-232. The industrial -40C to +85C temperature range and TSSOP-14 footprint suit DIN-rail and panel-mount sensor transmitters.
Được đề xuất
Smart Home and Building Automation
In smart-home and building-automation devices, the PIC16LF1764-I/ST handles capacitive-touch sensing, dimmer control, and Modbus-RTU communication over RS-485. The high-current I/O pins drive TRIACs and relays directly up to 100 mA per pin, eliminating external driver transistors in small-load switches. The TSSOP-14 package fits behind wall plates, while the 1.8-3.6 V range lets the device run from rectified mains-derived low-voltage rails.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1764-I/ST — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16LF1765-I/ST | PIC16LF1705-I/ST | PIC16F1764-I/ST | PIC16LF1764-I/P | PIC16LF1574-I/ST |
|---|---|---|---|---|---|---|
| Package | TSSOP-14 | TSSOP-14 (same) | TSSOP-14 (same) | TSSOP-14 (same) | TSSOP-14 / DIP-14 | TSSOP-14 (same) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range | 8-bit PIC enhanced mid-range |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash | 7 KB | 14 KB (more) | 14 KB | 7 KB (identical die) | 7 KB (same) | 7 KB (same) |
| RAM | 512 B | 1 KB (more) | 1 KB | 512 B (same) | 512 B (same) | 512 B (same) |
| VDD Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V (wider) | 1.8 V to 3.6 V (same) | 1.8 V to 3.6 V |
| Op-Amps | 2 | 2 | 2 | 2 (same die) | 2 (same) | 0 |
| Temperature Grade | Industrial -40C to +85C | Industrial | Industrial | Industrial | Industrial | Industrial |
Bảo phân biệt quan trọng
- Lowest-voltage 8-bit PIC with integrated op-amps and zero-cross detect (vsPIC16LF1574-I/ST)
- Wider supply range supports 5 V designs without level shifters (vsPIC16F1764-I/ST)
- Same TSSOP-14 pinout as 20-pin family's small sibling (vsPIC16LF1765-I/ST)
Ghi chú thiết kế
The PIC16LF1764-I/ST operates from 1.8 V to 3.6 V on VDD (pin 14); place a 0.1 uF decoupling capacitor within 5 mm of pin 14 and a 1 uF bulk capacitor near the IC. For ADC accuracy, add a small ferrite bead or 10 ohm resistor between digital VDD and analog AVDD/VREF, even though this 14-pin part does not expose separate analog supply pins. XLP sleep currents are specified with all peripherals disabled and the on-chip op-amps powered down via the OPAxCON register.
Route the ICSP clock (RB6/ICSPCLK, pin 9) and ICSP data (RB7/ICSPDAT, pin 8) traces away from switching nodes such as TRIAC outputs, high-current I/O, and high-dv/dt signals. Keep analog inputs (RA1/RA0) traces short and surrounded by a ground pour to minimize ADC noise pickup. The TSSOP-14 thermal pad is not present, so the IC relies on the 14 leads for heat dissipation - acceptable for the 8-bit PIC's milliwatt power profile.
Do not leave the MCLR pin (RA3/MCLR, pin 3) floating - either hard-wire to VDD through a 10 kohm pull-up, or use a 10 kohm pull-up plus 100 nF capacitor to ground for ICSP reset. The PIC16LF1764 shares peripheral output mapping across pins per the datasheet PPS table; design the PCB layout assuming worst-case peripheral reassignment. When migrating code from PIC16F1764 (5 V) to PIC16LF1764 (3.3 V), verify that any 5 V peripherals are replaced with 3.3 V equivalents to avoid over-voltage on I/O pins.
Thông tin tuân thủ
RoHS and REACH compliance confirmed by Microchip product page and distributor listings (DigiKey, LCSC). Not AEC-Q100 qualified; choose AEC-Q100-qualified PIC16 variants (PIC16F1764-E/ST, etc.) for automotive designs. Lead-free and halogen-free per Microchip's Microchip Green policy.
