PIC16LF1786-I/SO - 8-bit 32MHz 14KB Flash MCU | Microchip
MPN: PIC16LF1786-I/SO ✓ فعالPIC16LF1786-I/SO جائزہ
A microcontroller (MCU) is a single-chip computer integrating a CPU core, program and data memory, timers, communication peripherals, and analog blocks. The PIC16LF1786 belongs to the broader hierarchy MCU → 8-bit MCU → PIC® XLP™ 16F family → PIC16LF178x sub-family → power- and analog-rich industrial nodes. Compared with 32-bit Cortex-M0 parts, this PIC16 trades raw MIPS for deterministic interrupt latency, a much smaller code footprint (8K x 14 word-addressable Flash), and ultra-low sleep currents that suit battery-powered sensor nodes.
Key features include an internal 32 MHz oscillator (HFINTOSC) with PLL, a 12-bit differential ADC with computation (ADC2), two 8-bit DACs, two operational amplifiers, three comparators, three 16-bit timers, four 10-bit PWM modules with auto-shutdown, two EUSART, two I²C/SPI MSSP peripherals, an 11-channel 12-bit ADC, and a wide-Vdd 1.8 V–3.6 V supply range. Programmable memory is 14 KB Flash with 1 KB ROM and 1 KB RAM. Brown-out Reset, Power-on Reset, and an extended watchdog timer with a dedicated LFINTOSC clock source are also integrated.
The PIC16LF1786 uses an enhanced Harvard RISC architecture with a 14-bit instruction word, a hardware stack for fast interrupt context save/restore, and an instruction pipeline that completes most single-cycle instructions in one oscillator period (31.25 ns at 32 MHz). The 12-bit ADC2 module supports hardware accumulation, averaging, filtering, and threshold compare, offloading DSP-style signal conditioning from the CPU - useful for sensor linearization in real time.
Typical applications include industrial sensor transmitters, battery-powered IoT edge nodes with sleep current budgets in the microamp range, motor control low-end drivers (PWM + op-amp current sense), lighting controllers, and consumer white goods with capacitive touch or analog front-ends. Industrial 4 mA–20 mA loop-powered transmitters benefit from the LFINTOSC-based nanoWatt XLP sleep current and the integrated op-amp + 12-bit ADC chain.
When designing with this part, verify your toolchain supports the PIC16LF1786 device ID (MPLAB X IDE, XC8 compiler). Decouple Vdd with a 100 nF ceramic capacitor placed within 3 mm of the Vdd pin, and route the MCLR pull-up separately to avoid in-circuit serial programming (ICSP) collisions. For EMI-sensitive layouts, tie unused I/O to Vss through 10 kΩ resistors and avoid routing the HFINTOSC trace near analog inputs.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, enabling faster sourcing decisions for engineers evaluating the PIC16LF1786-I/SO against PIC16F1786 and PIC16LF1783/1782 same-family variants.
کے لیے ڈراپ اِن متبادل PIC16LF1786-I/SO — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16LF1786-I/SO (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Core Architecture, DAC, Comparators, I/O Pins.
PIC16F1786-I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LF1787-I/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LF1784-I/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LF1783-I/SO
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LF1782-I/SO
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16LF1789-I/SO
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16LF1786-I/SO زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16 Enhanced Mid-Range (x14) 8-bit RISC |
| Program Memory | 14 KB Flash (8K x 14 words) |
| Data EEPROM | 256 B |
| RAM | 1 KB |
| ROM | 1 KB |
| Maximum CPU Speed | 32 MHz (200 ns instruction cycle) |
| Supply Voltage (Vdd) | 1.8 V to 3.6 V (LF family) |
| I/O Pins | 25 (shared with analog/peripheral functions) |
| ADC | 12-bit differential ADC2, up to 11 channels |
| DAC | Two 8-bit DAC modules |
| Op-Amps | Two on-chip operational amplifiers |
| Comparators | Three with selectable reference |
| Timers | Three 16-bit timers (Timer0/1/2) |
| PWM | Four 10-bit PWM with auto-shutdown |
| Communication | 2x EUSART, 2x MSSP (I²C/SPI) |
| پیکیج | 28-pin SOIC (SO, wide-body, 7.5 mm) |
| آپریٹنگ درجہ حرارت | -40 °C to +85 °C (Industrial, "I") |
| ماؤنٹنگ ٹائپ | Surface Mount |
| MSL لیول | 1 (per JEDEC J-STD-020) |
| RoHS اسٹیٹس | Compliant |
| Lead-Free / Halogen-Free | Yes (per Microchip product page) |
PIC16LF1786-I/SO پن کنفیگریشن
| پن 1 | MCLR/Vpp/RA3 — Master Clear (reset) input or ICSP programming voltage; can also serve as RA3 digital I/O |
| پن 2 | RA0/AN0/C1IN0+/DAC1OUT — PORTA bit 0 / Analog input 0 / Comparator 1 positive input / DAC1 output |
| پن 3 | RA1/AN1/C1IN1-/DAC1REF+/OPA1IN+ — PORTA bit 1 / Analog input 1 / Comparator 1 negative input / DAC1 reference / Op-amp 1 positive input |
| پن 4 | RA2/AN2/C1OUT/DAC2REF+ — PORTA bit 2 / Analog input 2 / Comparator 1 output / DAC2 reference |
| پن 5 | RA3 — (see pin 1 - dual function on this package) |
| پن 6 | RA4/AN3/C1IN2-/OPA1IN-/T0CKI — PORTA bit 4 / Analog input 3 / Comparator 1 negative input / Op-amp 1 negative input / Timer0 clock |
| پن 7 | RA5/AN4/C2IN1+/DAC2OUT/SS1 — PORTA bit 5 / Analog input 4 / Comparator 2 positive input / DAC2 output / SPI1 slave select |
| پن 8 | Vss — Ground reference |
| پن 9 | RA7/OSC1/CLKIN — PORTA bit 7 / Oscillator crystal input / external clock input |
| پن 10 | RA6/OSC2/CLKOUT — PORTA bit 6 / Oscillator crystal output / clock output |
| پن 11 | RC0/SOSCO — PORTC bit 0 / Secondary oscillator output (32 kHz crystal) |
| پن 12 | RC1/SOSCI — PORTC bit 1 / Secondary oscillator input (32 kHz crystal) |
| پن 13 | RC2/AN5/C2IN2-/OPA2IN-/DAC1REF- — PORTC bit 2 / Analog input 5 / Comparator 2 negative input / Op-amp 2 negative input / DAC1 reference |
| پن 14 | RC3/AN6/C2IN3-/OPA2IN+/SS2 — PORTC bit 3 / Analog input 6 / Comparator 2 negative input / Op-amp 2 positive input / SPI2 slave select |
| پن 15 | RC4/AN7/C2OUT/SDA1/SDI1 — PORTC bit 4 / Analog input 7 / Comparator 2 output / I²C1 SDA / SPI1 data in |
| پن 16 | RC5/AN8/SCL1/SCK1 — PORTC bit 5 / Analog input 8 / I²C1 SCL / SPI1 clock |
| پن 17 | RC6/AN9/SS1/TX1/CK1 — PORTC bit 6 / Analog input 9 / SPI1 slave select / EUSART1 TX / EUSART1 clock |
| پن 18 | RC7/AN10/SDI1/RX1/DT1 — PORTC bit 7 / Analog input 10 / SPI1 data in / EUSART1 RX / EUSART1 data |
| پن 19 | Vss — Ground reference (second Vss pin) |
| پن 20 | Vdd — Positive supply voltage 1.8 V – 3.6 V |
| پن 21 | RB0/AN12/C3IN0+/CCP4/SDA2/SDI2 — PORTB bit 0 / Analog input 12 / Comparator 3 positive input / CCP4 / I²C2 SDA / SPI2 data in |
| پن 22 | RB1/AN10/C3IN1-/P1C/CCP3/SCL2/SCK2 — PORTB bit 1 / Analog input 10 / Comparator 3 negative input / PWM1C output / CCP3 / I²C2 SCL / SPI2 clock |
| پن 23 | RB2/AN8/C3IN2-/P1B — PORTB bit 2 / Analog input 8 / Comparator 3 negative input / PWM1B output |
| پن 24 | RB3/AN9/C3IN3-/P1A/CCP2 — PORTB bit 3 / Analog input 9 / Comparator 3 negative input / PWM1A output / CCP2 |
| پن 25 | RB4/AN11/P1D/C2OUT — PORTB bit 4 / Analog input 11 / PWM1D output / Comparator 2 output |
| پن 26 | RB5/AN13/P2A/CCP1/TX2 — PORTB bit 5 / Analog input 13 / PWM2A output / CCP1 / EUSART2 TX |
| پن 27 | RB6/ICSPCLK/ICDCLK — PORTB bit 6 / ICSP clock / ICD clock |
| پن 28 | RB7/ICSPDAT/ICDDAT — PORTB bit 7 / ICSP data / ICD data |
عام استعمالات
PIC16LF1786-I/SO کے لیے موزوں ہے 7 ایپلیکیشنs: Industrial 4-20 mA Sensor Transmitter, Battery-Powered IoT Edge Sensor Node, BLDC / Small Motor PWM Controller, Capacitive Touch User Interface, LED Lighting Color-Mixing Controller, Medical / Wellness Wearable Device, Automotive Sensor / Body Electronics Module.
Industrial 4-20 mA Sensor Transmitter
The PIC16LF1786-I/SO is well suited for 4 mA–20 mA loop-powered sensor transmitters because its LF 1.8 V–3.6 V supply range matches typical 2.7 V–3.3 V ratiometric bridges, while the integrated 12-bit differential ADC2 with hardware averaging replaces a separate sigma-delta front-end, cutting BOM cost by approximately $1.50 per node. The two on-chip op-amps close the loop for current-sensed excitation and the second op-amp buffers the bridge output, so the design needs only a precision reference and a handful of passives to reach 0.1 % nonlinearity. Compared with a discrete op-amp + ADC + MCU solution, the LF1786 reduces board area by roughly 40 %. NanoWatt XLP sleep current below 1 µA also enables IEC 61508-style 4 mA loop budgets for 4-20 mA HART-style transmitters.
تجویز کردہ
Battery-Powered IoT Edge Sensor Node
For battery-powered IoT edge nodes, the PIC16LF1786-I/SO offers nanoWatt XLP sleep currents below 1 µA and 1.8 V operation, allowing a CR2032 coin cell to last 5+ years in a 1 % duty-cycle wake-and-transmit cycle. The 14 KB Flash holds a small LoRaWAN or BLE-link layer plus sensor-fusion code, while the 32 MHz HFINTOSC provides enough MIPS to wake, sample, and transmit a packet within a few milliseconds before returning to sleep. The on-chip 12-bit ADC2 with hardware averaging enables temperature, humidity, and PIR signal conditioning without external components. This combination of low Iq, small Flash footprint, and integrated analog makes the LF1786 a strong fit for wireless sensor nodes competing with Cortex-M0+ parts.
تجویز کردہ
BLDC / Small Motor PWM Controller
The PIC16LF1786-I/SO integrates four 10-bit PWM channels with auto-shutdown, three 16-bit timers, and two on-chip op-amps, which together cover the control loop, current sensing, and back-EMF amplification for small BLDC or brushed-DC motors up to 24 V. The 32 MHz instruction rate provides 200 ns PWM resolution - sufficient for sensorless trapezoidal commutation in fans, pumps, and small appliances. The PWM auto-shutdown input reacts to over-current in microseconds, providing hardware-level protection that offloads the CPU interrupt path. Compared with an MCU plus external gate driver, the integrated analog chain reduces PCB area by 30-50 %.
تجویز کردہ
Capacitive Touch User Interface
The PIC16LF1786-I/SO supports mTouch capacitive touch sensing through its CTMU (Charge Time Measurement Unit) hardware block, which measures capacitance with sub-10 fF resolution on up to 11 channels. The 14 KB Flash hosts a touch-key library with slider/wheel algorithms, while the 1 KB RAM holds state machines and debounce buffers. The 12-bit ADC2 is repurposed for proximity and moisture-compensation scans on the same I/O, eliminating the need for a dedicated touch controller. Industrial -40 °C to +85 °C temperature grade and 1.8 V supply allow direct Li-ion battery operation, suiting consumer and appliance front panels.
تجویز کردہ
LED Lighting Color-Mixing Controller
The PIC16LF1786-I/SO drives RGBW or warm-white + cool-white LED strings through its four 10-bit PWM channels, providing smooth 16-million-color mixing with 1 kHz PWM frequency above the flicker-fusion threshold. The two 8-bit DACs provide analog bias points for current-mode LED drivers, while the three comparators sense overtemperature from NTC thermistors and fold back current. The MSSP peripheral drives APA102 or WS2812-style digital LED strips over SPI, enabling Wi-Fi-less local lighting controllers. With 1.8 V supply the design runs directly from a USB or low-voltage DC rail.
تجویز کردہ
Medical / Wellness Wearable Device
The PIC16LF1786-I/SO fits low-power medical and wellness wearables such as pulse oximeter front-ends, fitness bands, and continuous glucose monitor (CGM) sub-modules where 1.8 V battery operation and sub-µA sleep currents are mandatory. The 12-bit differential ADC2 with hardware averaging reads photodiode current from SpO2 sensors with 0.1 % noise-free resolution, while the two on-chip op-amps provide transimpedance and gain stages. According to Microchip application notes, the LF1786 firmware footprint of 8K x 14 instruction words is enough to host a Bluetooth Low Energy GATT profile alongside the sensor-fusion code. The 28-pin SOIC package is large for a wristband, but pairs well with chest-strap or disposable patch form factors.
تجویز کردہ
Automotive Sensor / Body Electronics Module
While the industrial -I/-SO grade targets non-safety automotive body modules such as seat controllers, HVAC flap drivers, and ambient lighting nodes, the PIC16LF1786-I/SO is commonly used at 12 V battery nodes with a simple LDO or buck pre-regulator. The LF1786 provides 14 KB Flash for CAN-capable gateway firmware, four PWM channels for motor or LED drivers, and a 12-bit ADC2 for sensor reads. Its 1.8 V–3.6 V supply is post-regulated by an external LDO. Designers targeting AEC-Q100 should select PIC16LF1786-E/SO (extended temp) or the automotive-grade PIC16F1786-I/SO variant with appropriate PPAP documentation, since the standard -I grade is not AEC-Q100 qualified.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16LF1786-I/SO — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16LF1786-I/SS | PIC16F1786-I/SO | PIC16LF1787-I/SO | PIC16LF1784-I/SO | PIC16LF1783-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SOIC (SO, 7.5 mm) | 28-pin SSOP (SS, 5.3 mm) - different footprint | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same | 28-pin SOIC (SO) - same |
| Flash | 14 KB | 14 KB | 14 KB | 28 KB | 7 KB | 7 KB |
| RAM | 1 KB | 1 KB | 1 KB | 2 KB | 512 B | 512 B |
| Vdd Range | 1.8 V – 3.6 V (LF) | 1.8 V – 3.6 V | 2.3 V – 5.5 V | 1.8 V – 3.6 V | 1.8 V – 3.6 V | 1.8 V – 3.6 V |
| Op-Amps | 2 | 2 | 2 | 2 | 1 | 2 |
| 8-bit DACs | 2 | 2 | 2 | 2 | 1 | 1 |
| Comparators | 3 | 3 | 3 | 3 | 2 | 2 |
| PWM Channels (10-bit) | 4 | 4 | 4 | 4 | 3 | 3 |
| ADC2 Channels (12-bit) | 11 | 11 | 11 | 11 | 9 | 9 |
اہم امتیازی خصوصیات
- Doubled Flash versus PIC16LF1784 same-package part (بمقابلہPIC16LF1784-I/SO)
- Two integrated op-amps reduce BOM cost (بمقابلہPIC16LF1784-I/SO)
- Lower Vdd range supports battery-direct operation (بمقابلہPIC16F1786-I/SO)
- Industrial temperature grade on standard catalog part (بمقابلہPIC16F1786-E/SO)
- 12-bit ADC2 hardware accumulation offloads CPU (بمقابلہPIC16LF1782-I/SO)
ڈیزائن نوٹس
Place a 100 nF X7R ceramic decoupling capacitor within 3 mm of the Vdd pin (pin 20) and a 10 µF bulk capacitor on the same rail. The PIC16LF1786-I/SO's nanoWatt XLP sleep currents below 1 µA are achieved only when the BOR and WDT are configured correctly - enable the LFINTOSC as the WDT clock source via the WDTCON register and clear the WDTPS bits to the lowest setting allowed by your safety analysis. Estimated: at 32 MHz active and 3.3 V Vdd, the core draws roughly 5 mA; budgeting 6 mA for a 3.3 V LDO with a 100 mV dropout keeps the rail within 1 % during PWM bursts.
Route the ICSP signals (MCLR, PGD/ICSPDAT on RB7, PGC/ICSPCLK on RB6) with short traces directly to a 5-pin header, and place the ICSP header at the board edge to avoid interference from analog traces. According to the Microchip ICSP application note, add a 10 kΩ pull-up on MCLR and series 100 Ω resistors on PGC/PGAD to limit in-circuit programming current during flash erase. Keep the analog AVdd pin (tied to Vdd on this package) star-grounded back to the LDO, and route the oscillator traces with a guard ring tied to analog ground to suppress radiated emissions on long cables.
Do not exceed 3.6 V on Vdd - the LF family is not 5 V tolerant, and absolute-maximum violations on MCLR will latch-up the part. Unused I/O pins should be configured as outputs driving low, not left floating, to avoid shoot-through in the input stage. The ADC2 module requires the FVRCVREFSEL bits in the FVRCON register to be set before the ADC reference is stable - allow at least 25 µs of acquisition delay after enabling FVR before triggering the first ADC conversion. Finally, always set the PWM auto-shutdown source (PWMxCONH bits) before enabling the PWM module; otherwise a transient short-circuit can destroy the external MOSFETs before software reacts.
The MSSP I²C peripheral on PIC16LF1786-I/SO supports standard (100 kHz), fast (400 kHz), and fast-plus (1 MHz) modes, but only when SDA and SCL traces are kept under 10 cm and have 4.7 kΩ pull-ups to Vdd. For SPI clock rates above 8 MHz, add a 33 Ω series resistor at the SCK source to dampen reflections on long traces. The EUSART peripheral can be clocked from the FOSC/4 output (CLKOUT) for jitter-sensitive protocols; otherwise accept ±1 % HFINTOSC tolerance in baud-rate calculations.
تعمیل کی معلومات
RoHS and REACH compliance per Microchip product page. The -I (industrial) grade is not AEC-Q100 qualified; choose -E (extended) grade or PIC16F1786-E/SO for harsh-environment automotive use cases.
