PIC16LF1787T-I/MV - 8-bit MCU 32MHz 14KB Flash | Microchip
MPN: PIC16LF1787T-I/MV ✓ Hoạt độngPIC16LF1787T-I/MV Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path that integrates CPU, Flash, RAM, EEPROM, and peripherals. The PIC16 family occupies the mid-range PIC segment, sitting above baseline (PIC10/PIC12/PIC16F5x) and below the PIC18/dsPIC families. MCU -> PIC16 family -> PIC16LF178x sub-family -> PIC16LF1787 specific device, with the "LF" suffix and "nWLP/XLP" branding indicating Microchip's nanoWatt eXtreme Low Power technology for sleep currents in the sub-uA range.
Key features include 8 K x 14 Flash (14 KB), 1 KB RAM, 256 B EEPROM, the afore-mentioned 12-bit ADC and 8-bit DAC, OPAmp modules, three PSMC channels providing flexible PWM with programmable frequency, duty cycle, and dead-band control, plus standard peripherals (CCP, EUSART, I2C, SPI, comparators). Connectivity is I2C/SPI/UART on 35 I/O pins. Supply voltage spans 1.8 V to 3.6 V (LF "low-voltage/frequency" part).
Designers should note the UQFN-EP exposed pad must be soldered to the PCB ground plane for thermal dissipation; operating temperature range is -40 °C to +85 °C (industrial, "I" suffix). The PSMC peripheral differentiates this MCU from standard CCP timers by allowing digital feedback control of PWM frequency and pulse begin/end times. When migrating firmware, the PSMC registers and trigger sources differ from dsPIC PWM modules - check the
Note: datasheet for register maps and the "Migrating from PIC16F1787" application note (refer to manufacturer documentation).
Typical applications include LED lighting drivers (using PSMC for high-resolution dimming), Switch-mode power supply controllers, motor control (brushed DC up to 1.5 A drive via the integrated OPAmp + PSMC), battery-powered IoT sensor nodes (nWLP/XLP sleep modes), and small appliance control panels. The wide Vdd range and integrated analog make it a strong fit for mixed-signal designs that need to minimize external components.
When designing with this device, the LF variant requires the 32 MHz internal oscillator to be used carefully - check the factory calibration value in the OSCTUNE register for temperature compensation. Total I/O count is 35 across a 40-pin package; the remaining pins are dedicated to Vdd/Vss and the EP. Plan pin allocation early, especially when assigning analog functions (AN0-ANxx) and the dedicated OPAmp input pins.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1787T-I/MV — 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 PIC16LF1787T-I/MV (cùng hình factor và footprint) — khác nhau ở Package, Program Memory (Flash), DAC, ADC, Core Architecture.
PIC16LF1786T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1784T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF1782T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1787T-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16LF1787-E/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1787-I/MV
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LF1787T-I/MV Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC RISC |
| Family | PIC16LF178x (PIC16F1787 core, low-voltage "LF" variant) |
| Program Memory (Flash) | 14 KB (8 K x 14 words) |
| Data RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V |
| Number of I/O Pins | 35 |
| ADC | 12-bit |
| DAC | 8-bit |
| Operational Amplifiers | Yes (integrated OPAmp modules) |
| PSMC Channels | 3 (Programmable Switch Mode Controller) |
| Communication Interfaces | I2C, SPI, EUSART (UART) |
| Nhiệt độ hoạt động | -40 °C to +85 °C (Industrial, "I") |
| Hộp | 40-pin UQFN-EP, 5x5 mm |
| Kiểu lắp đặt | Surface Mount |
| Low-Power Technology | nanoWatt XLP (nWXLP) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16LF1787T-I/MV
| Chân 1 | RA0/AN0/C1IN0-/DAC/OPA1IN+ — PORTA bit 0 / Analog input / Comparator input / DAC output / OPAmp1 input |
| Chân 2 | RA1/AN1/C1IN1- — PORTA bit 1 / Analog input 1 / Comparator input |
| Chân 3 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| Chân 4 | RA3/AN3/C1IN1+ — PORTA bit 3 / Analog input 3 / Comparator non-inverting input |
| Chân 5 | RA4/AN4/C2OUT — PORTA bit 4 / Analog input 4 / Comparator 2 output |
| Chân 6 | RA5/AN5 — PORTA bit 5 / Analog input 5 |
| Chân 7 | RA6 — PORTA bit 6 |
| Chân 8 | RA7 — PORTA bit 7 |
| Chân 9 | VSS — Ground reference |
| Chân 10 | VDD — Positive supply (1.8 V to 3.6 V) |
| Chân 11 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 12 | RB1 — PORTB bit 1 |
| Chân 13 | RB2 — PORTB bit 2 |
| Chân 14 | RB3 — PORTB bit 3 |
| Chân 15 | RB4 — PORTB bit 4 |
| Chân 16 | RB5 — PORTB bit 5 |
| Chân 17 | RB6/ICSPCLK — PORTB bit 6 / ICSP clock |
| Chân 18 | RB7/ICSPDAT — PORTB bit 7 / ICSP data |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RC0 — PORTC bit 0 |
| Chân 22 | RC1 — PORTC bit 1 |
| Chân 23 | RC2 — PORTC bit 2 |
| Chân 24 | RC3 — PORTC bit 3 |
| Chân 25 | RC4 — PORTC bit 4 |
| Chân 26 | RC5 — PORTC bit 5 |
| Chân 27 | RC6 — PORTC bit 6 |
| Chân 28 | RC7 — PORTC bit 7 |
| Chân 29 | VSS — Ground |
| Chân 30 | VDD — Positive supply |
| Chân 31 | RD0 — PORTD bit 0 |
| Chân 32 | RD1 — PORTD bit 1 |
| Chân 33 | RD2 — PORTD bit 2 |
| Chân 34 | RD3 — PORTD bit 3 |
| Chân 35 | RD4 — PORTD bit 4 |
| Chân 36 | RD5 — PORTD bit 5 |
| Chân 37 | RD6 — PORTD bit 6 |
| Chân 38 | RD7 — PORTD bit 7 |
| Chân 39 | RE0 — PORTE bit 0 |
| Chân 40 | RE1 — PORTE bit 1 |
| Chân EP | EP — Exposed thermal pad - must be soldered to grounded copper pour |
Ứng dụng tiêu biểu
PIC16LF1787T-I/MV phù hợp cho 6 Áp dụngs: LED Lighting Driver with PSMC Dimming, Switch-Mode Power Supply (SMPS) Controller, Battery-Powered IoT Sensor Node, Small Appliance Control Board (Coffee Machine, Mixer), Closed-Loop Sensor Conditioning Hub, Automotive Interior Lighting/Mirror Module.
LED Lighting Driver with PSMC Dimming
The PIC16LF1787T-I/MV's three PSMC channels drive high-resolution PWM dimming of LED strings, replacing an external PWM controller IC. The 32 MHz core and 12-bit ADC enable closed-loop current control at >200 kHz PWM frequencies, which eliminates audible flicker in constant-current LED drivers. Running from 1.8 V-3.6 V, this device fits battery and USB-powered LED lamps, and the nanoWatt XLP sleep modes reduce standby current below 1 uA to meet stringent energy-star standby budgets when the lamp is off.
Được đề xuất
Switch-Mode Power Supply (SMPS) Controller
The PIC16LF1787T-I/MV delivers full SMPS functionality with its three PSMC channels, providing programmable frequency, duty cycle, rising/falling dead-band, and hardware fault shutdown. The integrated OPAmp modules configure as the current-sense amplifier directly, eliminating an external op-amp. The 12-bit ADC samples Vout for digital feedback regulation. This single-chip SMPS approach cuts BOM cost and PCB area in AC/DC adapters, isolated DC/DC converters, and battery chargers up to ~50 W.
Được đề xuất
Battery-Powered IoT Sensor Node
The PIC16LF1787T-I/MV runs from 1.8 V-3.6 V with nanoWatt XLP sleep current below 1 uA in doze/idle modes, making it ideal for coin-cell or 2xAA battery sensor nodes. Its 12-bit ADC reads analog sensors (temperature, light, gas) and its I2C/SPI/EUSART interfaces connect to digital sensors. Compact 5x5 mm UQFN-EP footprint minimizes PCB area for wearable or smart-home sensor tags. Combined with its 14 KB Flash, the device runs custom firmware plus protocol stacks (e.g., Modbus or proprietary RF command sets).
Được đề xuất
Small Appliance Control Board (Coffee Machine, Mixer)
The PIC16LF1787T-I/MV's integrated OPAmp + DAC + ADC subsystems replace multiple discrete components in small appliances. The PSMC channels drive TRIAC or MOSFET gate drivers for motor speed control (low-V brushes) while CCP/EUSART control user keypads/buttons. Its wide 1.8 V-3.6 V Vdd simplifies power-rail selection in 2xAA designs, and its industrial temperature range (-40 to +85 °C) covers kitchen and garage deployments. This consolidates the BOM into a single MCU in coffee makers, blenders, and similar appliances.
Được đề xuất
Closed-Loop Sensor Conditioning Hub
The PIC16LF1787T-I/MV integrates 12-bit ADC, 8-bit DAC, and OPAmp modules that close the loop on analog sensors, eliminating external signal-chain components. The 8-bit DAC provides offset or excitation to bridge-type sensors while the OPAmp gain-stages the signal and the ADC digitizes the result. The 35 I/O pins support multi-channel sensor matrices (e.g., 4-wire RTD, strain gauge), and EUSART provides reliable wired connectivity in factory automation or HVAC applications.
Được đề xuất
Automotive Interior Lighting/Mirror Module
Although not AEC-Q100 qualified at this variant, the PIC16LF1787T-I/MV can be used in non-safety automotive interior subsystems like ambient lighting or rear-view mirror modules. Its PSMC channels drive RGB LEDs with smooth cross-fades and the wide Vdd range tolerates 12 V battery transients when paired with an external regulator. The compact 5x5 mm UQFN-EP footprint eases integration into slim mirror housings, and its 12-bit ADC senses ambient light to set adaptive brightness.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1787T-I/MV — 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 | PIC16LF1786T-I/MV | PIC16LF1784T-I/MV | PIC16LF1782T-I/MV | PIC16F1787T-I/MV |
|---|---|---|---|---|---|
| Package | 40-pin UQFN-EP (5x5 mm) | 40-pin UQFN-EP (5x5 mm) - same | 40-pin UQFN-EP (5x5 mm) - same | 40-pin UQFN-EP (5x5 mm) - same | 40-pin UQFN-EP (5x5 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 14 KB | 14 KB (full size variant of family) | 7 KB | 3.5 KB | 14 KB |
| Data RAM | 1 KB | 1 KB | 512 B | 256 B | 1 KB |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage (Vdd) | 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 5.5 V |
| I/O Pins | 35 | 35 | 35 | 35 | 35 |
| PSMC Channels | 3 | 3 | 3 | 3 | 3 |
| Low-Power Technology | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP | nanoWatt XLP (XLP family branding) |
Bảo phân biệt quan trọng
- Three PSMC channels with programmable dead-band and fault shutdown (vsPIC16LF1786T-I/MV)
- Integrated OPAmp + 8-bit DAC + 12-bit ADC reduces external components (vsPIC16LF18857)
- Wide Vdd 1.8 V to 3.6 V matches battery-powered designs (vsPIC16F1787T-I/MV)
Ghi chú thiết kế
The 40-pin UQFN-EP package's exposed thermal pad MUST be soldered to a grounded copper pour (minimum 1 square inch of 1 oz copper on the top layer) to meet the device's thermal envelope. Without the EP soldered, the junction-to-ambient thermal resistance (theta_JA) rises dramatically and the silicon die can overheat even at moderate ambient loads. Use thermal vias under the EP to inner/ground layers for additional heat spreading; this is critical when running full CPU speed at 32 MHz with active peripherals.
Place the bulk Vdd decoupling capacitor (4.7 uF or 10 uF ceramic) within 5 mm of the Vdd pins and a 100 nF ceramic cap within 2 mm of each Vdd pin. The PIC16LF1787 has multiple Vdd/Vss pairs around the package - each pair needs its own bypass capacitor. Route analog signals (ANx, DAC, OPAmp inputs) far from high-current digital traces and from the PSMC PWM outputs to avoid analog coupling. Place the ICSP clock/data (RB6/RB7) on dedicated test pads if you plan to use in-circuit programming.
When migrating firmware across the PIC16LF178x family (1787 -> 1786 -> 1784 -> 1782), be aware that the Flash map and RAM allocation are different; re-validate linker scripts against the target device's data sheet, not just the family overview. Also confirm the 32 MHz internal oscillator's OSCTUNE factory calibration is within the device's operating range - LF parts have a different calibration profile than F parts. Finally, the PSMC module's output polarity, dead-band, and fault-shutdown behavior differ from generic dsPIC PWM; check the PIC16L(F)1787 datasheet (DS40001874D) PSMC section before re-using code from another MCU.
Thông tin tuân thủ
RoHS and lead-free per Microchip's UQFN family. Not AEC-Q100 qualified; for automotive applications requiring qualification, contact Microchip for PIC16LF1787T-QML or use a different AEC-Q100 qualified PIC16 variant. REACH SVHC status should be confirmed per the latest Microchip declaration.
