PIC16LF1786-E/SP - 8-Bit MCU, 14KB Flash, 28-SPDIP | Microchip
MPN: PIC16LF1786-E/SP ✓ פעילPIC16LF1786-E/SP סקירה
What is an 8-bit flash MCU? An 8-bit flash microcontroller is a single-chip computer built on a Harvard RISC architecture with 8-bit data paths, on-chip Flash program memory that can be erased and reprogrammed in-circuit, and integrated peripherals such as ADC, timers, and communication blocks. Within the broader taxonomy, the PIC16LF1786 sits under MCU -> microcontroller -> 8-bit MCU -> PIC16 family -> PIC16F178x sub-family, and it competes with low-power 8-bit lines from vendors such as Atmel/Microchip AVR and NXP Kinetis E.
Key features include 14 KB self-programmable Flash (8K x 14 words), 1 KB RAM, 256 B EEPROM, hardware Multiply and Peripheral Pin Select (PPS), an 8-bit DAC with FVR reference, four operational amplifiers rated for 12V operation, and a 12-bit differential ADC. The 'LF' variant runs from 1.8V to 3.6V while the standard 'F' part runs from 2.3V to 5.5V. Integrated XLP sleep modes drop quiescent current below 50 nA typical, enabling multi-year battery life in duty-cycled designs.
Architecturally, the device uses Microchip's enhanced mid-range x14 core with a 200 ns instruction cycle at 20 MHz and 31.25 ns at 32 MHz, plus a 16-level hardware stack and 32 interrupt sources. On-chip peripherals are routed to pins through the Peripheral Pin Select (PPS) engine, which lets designers remap digital functions without changing PCB layout. The PSMC block provides programmable dead-band control and edge-aligned PWM, simplifying digital lighting, half-bridge, and full-bridge drive topologies.
Typical applications include LED lighting and signage drivers using the PSMC and op-amps, sensor signal conditioning with the on-board op-amp and 12-bit ADC, low-power battery-powered IoT nodes leveraging XLP sleep, and small motor or solenoid control loops. The 28-SPDIP package also fits legacy through-hole industrial boards and breadboard-friendly prototypes.
A practical design tip: place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin and a bulk capacitor near VDD if the op-amps drive heavy loads, because the analog and digital VDD pins share internal bond wires. Always configure the PPS registers before enabling peripherals; otherwise pin mapping falls back to defaults and the code appears non-functional even though the silicon is healthy.
חלופות תחליף ישיר עבור PIC16LF1786-E/SP — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16LF1786-E/SP (אותו גורם צורה וטביעת רגל) — שונים ב Mounting Type, Operating Temperature, Package, DAC, ADC.
PIC16F1786-E/SP
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1786-I/SP
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LF1787-E/SP
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1784-E/SP
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1782-E/SP
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LF1786-E/SP דירוגים מרביים ומאפיינים חשמליים
| Core | PIC16 8-bit enhanced mid-range (x14) |
| Instruction Set Architecture | 8-bit Harvard RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 1 KB |
| EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz (31.25 ns instruction cycle) |
| Operating Voltage Range | 1.8 V to 3.6 V (LF variant) |
| ADC | 12-bit differential |
| DAC | 8-bit |
| Operational Amplifiers | 4 x 12V op-amps |
| PSMC Channels | 1 programmable switch-mode controller |
| I/O Pins | Up to 25 GPIO with PPS |
| מארז | 28-pin SPDIP (0.300 inch, 7.62 mm pitch) |
| סוג הרכבה | Through-hole (DIP) |
| טמפרטורת פעולה | -40 C to +125 C (E suffix = extended) |
| Low-Power Feature | XLP - eXtreme Low Power (<50 nA sleep) |
| סטטוס RoHS | Compliant |
| Lead-Free | Yes |
תצורת פינים של PIC16LF1786-E/SP
| פין 1 | RA3/AN3/C1IN+/C2IN+ — GPIO RA3 / analog input 3 / comparator input |
| פין 2 | RA4/AN4/T0CKI — GPIO RA4 / analog input 4 / Timer0 clock |
| פין 3 | RA5/AN5/OPA2IN+ — GPIO RA5 / analog input 5 / op-amp 2 input+ |
| פין 4 | RA6/OSC2/CLKOUT — GPIO RA6 / crystal output / clock output |
| פין 5 | RA7/OSC1/CLKIN — GPIO RA7 / crystal input / clock input |
| פין 6 | VPP/RE3/MCLR — Programming voltage / GPIO RE3 / Master Clear (reset) |
| פין 7 | VDD — Positive supply (1.8-3.6 V) |
| פין 8 | VSS — Ground reference |
| פין 9 | RB0/AN12/OPA1OUT — GPIO RB0 / analog input 12 / op-amp 1 output |
| פין 10 | RB1/AN10/OPA1IN- — GPIO RB1 / analog input 10 / op-amp 1 input- |
| פין 11 | RB2/AN8/OPA1IN+ — GPIO RB2 / analog input 8 / op-amp 1 input+ |
| פין 12 | RB3/AN9/MDCR/PWM3 — GPIO RB3 / analog input 9 / PSMC reference / PWM3 |
| פין 13 | RB4/AN11/PWM2 — GPIO RB4 / analog input 11 / PWM2 |
| פין 14 | RB5/AN13/PWM1 — GPIO RB5 / analog input 13 / PWM1 |
| פין 15 | RB6/PGC — GPIO RB6 / ICSP clock |
| פין 16 | RB7/PGD — GPIO RB7 / ICSP data |
| פין 17 | VDD — Positive supply (1.8-3.6 V) |
| פין 18 | VSS — Ground reference |
| פין 19 | RC0/SOSCO — GPIO RC0 / secondary oscillator output |
| פין 20 | RC1/SOSCI — GPIO RC1 / secondary oscillator input |
| פין 21 | RC2/AN14 — GPIO RC2 / analog input 14 |
| פין 22 | RC3/AN15 — GPIO RC3 / analog input 15 |
| פין 23 | RC4/AN16 — GPIO RC4 / analog input 16 |
| פין 25 | RC5/AN17 — GPIO RC5 / analog input 17 |
| פין 26 | RC6/AN18 — GPIO RC6 / analog input 18 |
| פין 27 | RC7/AN19 — GPIO RC7 / analog input 19 |
| פין 28 | RA0/AN0/OPA2OUT — GPIO RA0 / analog input 0 / op-amp 2 output |
| פין 29 | RA1/AN1/OPA2IN- — GPIO RA1 / analog input 1 / op-amp 2 input- |
| פין 30 | RA2/AN2/DACOUT — GPIO RA2 / analog input 2 / DAC output |
יישומים טיפוסיים
PIC16LF1786-E/SP מתאים עבור 6 יישוםs: Battery-Powered IoT Sensor Node, LED Lighting and Signage Driver, Analog Signal Conditioning Front-End, Low-Voltage Motor and Solenoid Control, Portable Medical and Wellness Devices, Industrial Sensor Transmitters (4-20 mA / Loop-Powered).
Battery-Powered IoT Sensor Node
The PIC16LF1786-E/SP fits battery-powered IoT sensor nodes thanks to its 1.8-3.6 V operating range and Microchip XLP technology that drops sleep current below 50 nA. Its 14 KB Flash accommodates BLE/Zigbee sub-gigahertz stack snippets and small RTOS kernels, while the 1 KB SRAM buffers sensor samples between wake events. The 12-bit differential ADC paired with four 12V op-amps lets designers condition thermocouple, bridge, or photodiode signals on-chip, eliminating external analog ICs. A duty-cycled wake-measure-transmit loop running at 1 Hz averages below 1 uA, supporting multi-year coin-cell operation. PPS allows flexible pin mapping for SPI/I2C sensors without board rework.
מומלץ
LED Lighting and Signage Driver
The PIC16LF1786-E/SP drives LED lighting and signage strings through its on-chip PSMC (Programmable Switch-Mode Controller) and four 12V op-amps that implement constant-current feedback loops. The PSMC delivers programmable dead-band and edge-aligned PWM up to 32 MHz, enabling high-resolution dimming and color mixing without external PWM controllers. The op-amps close the loop around sense resistors while the 8-bit DAC sets the dimming target. Designers can map PWM outputs to any GPIO via PPS, simplifying PCB layout for RGB or RGBA channels. Industrial temperature grade and XLP sleep extend product life in always-on installations.
מומלץ
Analog Signal Conditioning Front-End
The PIC16LF1786-E/SP acts as a self-contained analog front-end by combining four 12V op-amps, a 12-bit differential ADC, an 8-bit DAC, and a precision FVR on a single die. Engineers can implement active filters, instrumentation amplifiers, and programmable gain stages using the on-chip op-amps, then feed the conditioned signal directly into the ADC - no external analog IC required. The 256-byte EEPROM stores calibration coefficients, while the DAC outputs analog setpoints for closed-loop control. PPS allows simultaneous use of op-amp outputs and ADC inputs on the same chip without pin contention, reducing BOM cost and PCB area.
מומלץ
Low-Voltage Motor and Solenoid Control
The PIC16LF1786-E/SP controls small DC motors, solenoids, and relays through its PSMC peripheral that generates complementary PWM with programmable dead-time, preventing shoot-through in half-bridge or full-bridge drivers. The 1.8-3.6 V supply range suits single-cell Li-ion packs driving sub-3V actuators directly, while the four 12V op-amps condition back-EMF and current-sense feedback. The 32 MHz CPU closes current and speed loops in well under 1 ms, with 1 KB RAM supporting small field-oriented-control experiments. Through-hole SPDIP packaging simplifies prototype and lab-bench assembly.
מומלץ
Portable Medical and Wellness Devices
The PIC16LF1786-E/SP suits portable medical and wellness devices such as pulse oximeters, glucose meters, and wearable monitors because its 12-bit differential ADC reads small biopotential signals with on-chip op-amp gain, while XLP sleep extends battery life between measurements. The 14 KB Flash runs small DSP-style filtering (moving-average or simple FIR) and the 256-byte EEPROM stores user profiles or calibration constants. The 28-SPDIP package is friendly for through-hole medical-grade assembly lines, and the industrial temperature range ensures operation in body-worn enclosures. A single CR2032 coin cell can power months of spot-check measurements at low duty cycle.
מומלץ
Industrial Sensor Transmitters (4-20 mA / Loop-Powered)
The PIC16LF1786-E/SP powers loop-powered 4-20 mA industrial sensor transmitters thanks to its wide 1.8-3.6 V supply and ultra-low XLP sleep current below 50 nA. The four 12V op-amps implement bridge excitation, instrumentation amplification, and V-I conversion in a single chip, while the 12-bit ADC digitizes the conditioned sensor signal before driving the loop DAC. PPS remaps UART peripherals to any GPIO, allowing RS-485 or HART modem isolation. The 28-SPDIP package is field-replaceable, and the extended -40C to +125C temperature range handles outdoor process plants and factory floors.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16LF1786-E/SP — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16F1786-E/SP | PIC16LF1786-I/SP | PIC16LF1787-E/SP | PIC16LF1784-E/SP | PIC16LF1782-E/SP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Operating Voltage Range | 1.8 V to 3.6 V | 2.3 V to 5.5 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 |
| Program Memory (Flash) | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB (-50%) | 3.5 KB (-75%) |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 512 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40 C to +125 C | -40 C to +125 C | -40 C to +85 C | -40 C to +125 C | -40 C to +125 C | -40 C to +125 C |
| On-Chip Op-Amps | 4 x 12V | 4 x 12V | 4 x 12V | 4 x 12V | 2 x 12V | 2 x 12V |
| 12-bit ADC | Yes | Yes | Yes | Yes | Yes | Yes |
מבדילים עיקריים
- Wider operating voltage window than the F variant (לעומתPIC16F1786-E/SP)
- Higher memory than smaller siblings (לעומתPIC16LF1784-E/SP)
- Extended temperature range vs I-grade (לעומתPIC16LF1786-I/SP)
הערות תכנון
Decouple VDD (pin 7 and pin 17) with a 100 nF ceramic capacitor placed within 5 mm of each pin and a bulk 10 uF tantalum or ceramic near the chip. The dual VDD/VSS pairs serve separate analog and digital bond wires; bypass both to keep ADC noise low. For XLP designs, switch to the internal 31 kHz LFINTOSC during sleep and gate unused peripherals via PMD registers to achieve the <50 nA sleep current promised in the datasheet. Estimated: assuming two VDD pins share current equally, each pin carries about 15 mA maximum load at 32 MHz.
Configure PPS (Peripheral Pin Select) registers before enabling peripherals - peripherals default to no pin mapping and the firmware will appear non-functional even though the silicon is healthy. Always clear the CCP/MSSP pins back to GPIO when reassigning them. The MCLR pin (RE3, pin 6) is input-only on this family; do not drive it as an output. Programming voltage on VPP must not exceed 13.5V or the device will enter High-Voltage Programming mode unintentionally.
Estimated: at 32 MHz, VDD 3.3 V and full GPIO toggle, the PIC16LF1786-E/SP draws approximately 8 mA active (per datasheet typical curves) dissipating about 26 mW. The 28-SPDIP package has theta_JA around 70 C/W in still air, so the junction rises only ~2 C above ambient. No heatsink is needed, but the part should be kept below 125 C for E-grade reliability.
מידע על תאימות
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - choose PIC16F1786-E/SP automotive variants for vehicle applications. REACH compliance confirmed via Microchip regulatory documentation.
