PIC16LF1782-I/SP - 8-bit XLP MCU 32MHz 3.5KB Flash 28-SPDIP
MPN: PIC16LF1782-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.45 | $2.45 |
| 10 | $2.18 | $21.80 |
| 100 | $1.92 | $192.00 |
| 500 | $1.71 | $855.00 |
| 1,000 | $1.55 | $1,550.00 |
PIC16LF1782-I/SP Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, I/O peripherals, and interrupt logic on one integrated circuit. The 8-bit MCU category, to which the PIC16LF1782 belongs, represents the largest installed base in embedded design, used in applications ranging from appliance controls and sensor interfaces to automotive body electronics and IoT edge nodes. Within the broader taxonomy, this part sits inside: PIC microcontroller -> 8-bit MCU -> microcontroller -> embedded semiconductor. The XLP designation indicates enhanced sleep-mode current (down to sub-microamp) and active currents optimized for battery life.
Key features that differentiate the PIC16LF1782 include the integrated 12-bit ADC (vs. the typical 10-bit ADC found in mainstream 8-bit MCUs), the on-chip 8-bit DAC eliminating an external converter, two rail-to-rail op-amps usable for signal conditioning, and the PSMC module for driving MOSFETs in switch-mode supplies or motor bridges. The 32MHz internal oscillator enables instruction-cycle timing down to 125ns while maintaining low active current, and the 256-byte EEPROM supports nonvolatile parameter storage without external memory. Communication peripherals include I²C, SPI, EUSART (configurable UART/RS-485), and multiple CCP/ECCP modules for PWM and capture/compare.
The architecture is based on the enhanced mid-range PIC core with a 14-bit instruction word, hardware stack, and 31-level-deep interrupt priority. The XLP technology minimizes dynamic power consumption by gating unused peripherals and supporting multiple low-power sleep modes with peripheral wake-on-interrupt, making the device suited for coin-cell and energy-harvesting designs. The PSMC block runs independently of the core in some configurations, allowing efficient switch-mode control in low-duty-cycle applications.
Typical applications include battery-powered sensor conditioning nodes, portable medical instrument signal chains, low-power wireless sensor nodes (where the MCU sleeps between transmissions), LED lighting controllers with analog dimming, and small motor drivers using the PSMC. The integrated op-amps and 12-bit ADC also suit thermocouple/bridge-sensor interfaces in industrial monitoring, while the DAC and PWM channels simplify audio-tone generation and analog control loops.
When designing with this device, ensure proper decoupling (100nF ceramic close to VDD) and consider using the on-chip PSMC for power conversion instead of a separate controller. Watch the absolute maximum VDD of 3.6V for the LF (low-voltage) variant - use the PIC16F1782 (F, not LF) for 5V-tolerant designs. The EEPROM endurance is rated at 100k write cycles minimum, so use it for rarely changed calibration data, not frequent logging.
This page synthesizes distributor pricing, parametric drop-in alternatives in the same 28-pin SPDIP package, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1782-I/SP — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16LF1782-I/SP (same form factor and footprint) — differing in Package, ADC, MSL Level, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1783-I/SP
✅ Drop-In✓ In Stock
$1.78 / Unit
View Datasheet →PIC16F1782-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1782-E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1782-I/SP Maximum Ratings & Electrical Characteristics
| Core | PIC 8-bit enhanced mid-range |
| Family | PIC® XLP™ 16F |
| Program Memory (Flash) | 3.5 KB (2K x 14 words) |
| RAM | 256 bytes |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 3.6 V |
| ADC | 12-bit, up to 11 channels |
| DAC | 8-bit |
| Operational Amplifiers | 2 (rail-to-rail) |
| Comparators | Yes (FastComp) |
| PSMC Modules | Yes (Programmable Switch Mode Controller) |
| PWM / CCP | CCP + ECCP modules |
| Communication | I²C, SPI, EUSART (UART) |
| I/O Pins | 24 (approximate, in 28-pin SPDIP) |
| Package | 28-SPDIP (0.300 in, 7.62 mm) |
| Mounting Type | Through-Hole |
| Operating Temperature (I grade) | -40C to +85C |
| RoHS Status | Compliant |
| MSL Level | 1 (unlimited floor life, through-hole) |
PIC16LF1782-I/SP Pin Configuration
| Pin 1 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Pin 2 | RA5 — Digital I/O / analog input |
| Pin 3 | RA4 — Digital I/O / analog input |
| Pin 4 | MCLR/RA3 — Master Clear (reset) input / digital I/O |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RC0 — Digital I/O / analog input |
| Pin 7 | RC1 — Digital I/O / analog input |
| Pin 8 | RC2 — Digital I/O / analog input |
| Pin 9 | RC3 — Digital I/O / analog input |
| Pin 10 | RC4 — Digital I/O / analog input |
| Pin 11 | RC5 — Digital I/O / analog input |
| Pin 12 | RC6 — Digital I/O / TX/CK (EUSART) |
| Pin 13 | RC7 — Digital I/O / RX/DT (EUSART) |
| Pin 14 | RB0 — Digital I/O / analog input / interrupt |
| Pin 15 | RB1 — Digital I/O / analog input |
| Pin 16 | RB2 — Digital I/O / analog input |
| Pin 17 | RB3 — Digital I/O / analog input |
| Pin 18 | RB4 — Digital I/O / analog input |
| Pin 19 | RB5 — Digital I/O / analog input |
| Pin 20 | RB6 — Digital I/O / ICSPCLK |
| Pin 21 | RB7 — Digital I/O / ICSPDAT |
| Pin 22 | VSS — Ground reference (second ground pin) |
| Pin 23 | RA0 — Digital I/O / analog input / DAC output |
| Pin 24 | RA1 — Digital I/O / analog input |
| Pin 25 | RA2 — Digital I/O / analog input |
| Pin 26 | RA3 — Digital I/O / analog input (shared with MCLR pin 4 in some variants) |
| Pin 27 | RA6 — Digital I/O / analog input / op-amp output |
| Pin 28 | RA7 — Digital I/O / analog input / op-amp output |
Typical Applications
PIC16LF1782-I/SP is suitable for 7 applications: Battery-Powered Sensor Conditioning Nodes, Portable Medical Instrumentation, Low-Power Wireless Sensor Nodes, LED Lighting Controllers with Analog Dimming, Small Motor / Solenoid Drivers, Industrial Sensor Interface / 4-20 mA Loop, IoT Edge Nodes and Smart Home Devices.
Battery-Powered Sensor Conditioning Nodes
The PIC16LF1782-I/SP is ideal for battery-powered sensor-conditioning nodes because its XLP architecture delivers sub-microamp sleep current and the integrated 12-bit ADC plus two rail-to-rail op-amps eliminate external analog front-end components. Operating from 1.8 V to 3.6 V on a single Li-ion or two-AA cells, the part can wake on a comparator interrupt, sample a thermocouple or bridge sensor, log it to EEPROM, and return to sleep. The 32 MHz CPU processes math fast enough to keep duty cycle below 0.1%, extending coin-cell life to years. The 256-byte EEPROM stores calibration constants without external memory, simplifying the BOM.
Recommended
Portable Medical Instrumentation
The 12-bit ADC, on-chip op-amps, and 8-bit DAC make the PIC16LF1782-I/SP suitable for portable medical instruments such as pulse oximeters, glucometers, and digital thermometers. The op-amps condition the sensor signal directly on-chip, the 12-bit ADC digitizes with 0.25 mV resolution at 1 V FS, and the DAC generates the LED driver reference for pulse-oximetry. The XLP sleep current below 1 µA extends battery life on AAA cells, while the integrated peripherals reduce PCB area and BOM cost compared to a discrete analog chain. The 28-SPDIP through-hole package also suits medical devices that require field-replaceable MCU modules.
Recommended
Low-Power Wireless Sensor Nodes
In wireless sensor nodes (WSNs) using sub-GHz radios such as the MRF89XA, the PIC16LF1782-I/SP serves as the sensor-interface MCU while a partner radio handles transmission. The PIC sleeps below 1 µA between transmissions, wakes on the radio's interrupt or an external sensor, samples analog channels via the 12-bit ADC, packages the data, and returns to sleep. The PSMC block can also drive a small boost converter for energy harvesting from a solar cell or thermal gradient. With 32 MHz CPU performance and 8 MIPS throughput, the part executes the protocol stack fast enough to keep radio-on time minimal.
Recommended
LED Lighting Controllers with Analog Dimming
The PIC16LF1782-I/SP's integrated 8-bit DAC, two op-amps, and PSMC module make it a strong fit for LED lighting controllers requiring analog dimming and switch-mode LED driving. The DAC sets the LED current reference, the op-amps close the current-control loop, and the PSMC generates the PWM switch signal for a buck or boost LED driver. The 1.8-3.6 V range supports battery-backup emergency lighting. The 32 MHz core handles DMX/RDM or DALI protocol parsing with overhead for safety monitoring.
Recommended
Small Motor / Solenoid Drivers
For small DC motors, fans, or solenoid drivers, the PIC16LF1782-I/SP's PSMC module can drive a half-bridge or full-bridge FET gate driver directly, eliminating a dedicated motor-controller IC. The 12-bit ADC reads back motor current via a shunt resistor, the op-amps form the current-sense amplifier, and the 8-bit DAC or PWM sets the torque reference. The 32 MHz CPU closes the speed-control loop at high update rates. The 28-SPDIP through-hole package is also convenient for hobbyist robotics and 3D-printer board designs.
Recommended
Industrial Sensor Interface / 4-20 mA Loop
In industrial sensor-interface applications, the PIC16LF1782-I/SP digitizes 4-20 mA current-loop inputs or 0-10 V analog signals using its 12-bit ADC, with on-chip op-amps for input protection and signal conditioning. The EUSART module converts the digitized value into RS-485 for industrial bus transmission. The 256-byte EEPROM stores calibration and node ID, while the 28-SPDIP package supports DIN-rail mounted controller boards with through-hole construction. The industrial -40 to +85°C operating range of the I grade suits factory-floor environments.
Recommended
IoT Edge Nodes and Smart Home Devices
The PIC16LF1782-I/SP is well-suited for IoT edge nodes and smart-home devices such as thermostats, occupancy sensors, and HVAC controllers where the integrated 12-bit ADC, op-amps, and DAC provide complete analog signal chain in a single chip. The XLP architecture keeps sleep current below 1 µA, making it ideal for battery-powered occupancy sensors that wake on a PIR interrupt, sample, transmit, and sleep. The 256-byte EEPROM stores user preferences and calibration data, and the I²C/SPI interfaces connect to Wi-Fi/BLE companion modules. The 28-SPDIP package is also a favorite for hobby and Maker projects due to breadboard compatibility.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1782-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1783-I/SP | PIC16F1782-I/SP | PIC16LF1782-E/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Flash Memory | 3.5 KB | 7 KB (+100%) | 3.5 KB (same) | 3.5 KB (same) |
| RAM | 256 bytes | 256 bytes (same) | 256 bytes (same) | 256 bytes (same) |
| Operating Voltage (VDD) | 1.8 V to 3.6 V | 1.8 V to 3.6 V (same) | 1.8 V to 5.5 V (wider) | 1.8 V to 3.6 V (same) |
| Maximum CPU Speed | 32 MHz | 32 MHz (same) | 32 MHz (same) | 32 MHz (same) |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (same) | -40C to +85C (same) | -40C to +125C (extended) |
| ADC Resolution | 12-bit | 12-bit (same) | 12-bit (same) | 12-bit (same) |
| DAC | 8-bit | 8-bit (same) | 8-bit (same) | 8-bit (same) |
| XLP Low-Power | Yes | Yes | Yes | Yes |
| Approx. Unit Price (qty 1, USD) | $2.45 | $2.55 | $2.40 | $2.50 |
Key Differentiators
- Highest analog density in the PIC16LF178x family (vs PIC16LF1783-I/SP)
- Low-voltage XLP architecture (vs PIC16F1782-I/SP)
- Industrial temperature range (vs PIC16LF1782-E/SP)
Design Notes
The PIC16LF1782-I/SP must be powered within 1.8 V to 3.6 V on VDD; do not exceed 3.6 V or the LF variant may be damaged. Place a 100 nF decoupling capacitor as close as possible to VDD (pin 1) and VSS (pins 5 and 22). For noise-sensitive analog applications, add a 10 µF bulk capacitor near the supply pins. The two VSS pins must both be connected for proper ground return and reduced digital switching noise coupling into analog measurements.
Do not confuse the LF (low-voltage 1.8-3.6 V) variant with the F variant (1.8-5.5 V); using the LF on a 5V rail will damage the part. Verify the MPN suffix when ordering: -I/SP (industrial -40 to +85°C SPDIP), -E/SP (extended -40 to +125°C SPDIP), -I/SO (SOIC), -I/ML (QFN). The I grade is most common but is not suitable for outdoor or automotive underhood environments; choose E grade for those.
Estimated: at maximum CPU activity (32 MHz, all peripherals on), active current is approximately 7 mA at 3.3 V, dissipating roughly 23 mW. The 28-SPDIP package has a thermal resistance around 70 °C/W, giving a junction temperature rise of only ~1.6 °C above ambient, so no heatsink is required. However, ensure the device does not operate in a sealed enclosure above 70 °C ambient without verifying the I-grade limit (85 °C).
When laying out the 28-SPDIP footprint, reserve a 0.300 inch (7.62 mm) row pitch and 0.100 inch (2.54 mm) pin pitch matching the JEDEC SPDIP-28 standard. Place the ICSP programming header (RB6/RB7/MCLR/VDD/VSS) at the board edge for in-circuit programming access. Keep analog traces (sensor inputs to ADC) away from the EUSART and PWM traces to minimize digital-to-analog coupling.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; this part targets industrial/commercial, not automotive. Lead-free and halogen-free per Microchip environmental compliance disclosure.
