PIC16LF1937T-I/MV - 8-Bit XLP MCU, 14KB Flash, 40-UQFN | Microchip
MPN: PIC16LF1937T-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.6 | $2.60 |
| 10 | $2.34 | $23.40 |
| 100 | $2.08 | $208.00 |
| 500 | $1.82 | $910.00 |
| 1,000 | $1.69 | $1,690.00 |
PIC16LF1937T-I/MV Overview
An 8-bit microcontroller (MCU) is a self-contained computing core that integrates a CPU, program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and a rich set of peripherals onto a single die. PIC microcontrollers use a modified Harvard RISC architecture with a single accumulator (WREG) and a small, deterministic instruction set optimized for embedded control. PIC MCUs sit at the bottom of the embedded hierarchy: microcontroller -> embedded processor -> semiconductor IC, and are widely deployed wherever deterministic low-power control is required.
Key features of the PIC16LF1937 include the XLP nanoWatt technology with sleep currents below 100 nA, an integrated LCD driver supporting up to 96 segments, a 10-bit ADC with up to 14 channels, mTouch capacitive touch sensing, multiple Enhanced Universal Synchronous/Asynchronous Receiver Transmitters (EUSART), SPI, and I2C peripherals, plus a 16-bit Timer1 and capture/compare modules. The 32MHz internal oscillator and 16-level hardware stack support event-driven and RTOS-style designs.
The architecture uses a 14-bit instruction word with a 2-stage pipeline, providing single-cycle execution for most instructions. Internal peripherals include the Master Synchronous Serial Port (MSSP) for SPI/I2C, up to 36 digital I/O pins, and the Peripheral Pin Select (PPS) that allows flexible peripheral-to-pin mapping - dramatically simplifying PCB routing on dense designs.
Typical applications include battery-powered consumer electronics, portable medical sensors, IoT edge nodes, automotive body controllers, industrial sensor interfaces, and human-machine interface (HMI) modules with integrated LCD. The XLP technology is especially valuable in energy-harvesting designs where quiescent current dominates battery life.
When designing with this MCU, allocate decoupling capacitance (100nF ceramic + bulk) close to VDD pins and follow Microchip's debug header recommendations for ICSP. The PPS system requires that peripherals be unlocked via the PPS lock sequence before reconfiguration; firmware must include the proper unlock sequence in any field-update flow.
This page synthesizes distributor pricing, package options, and practical design notes not found on the manufacturer datasheet, and consolidates drop-in alternatives across the PIC16LF193x family for engineers evaluating footprint-compatible MCU migrations.
Drop-in alternatives for PIC16LF1937T-I/MV — 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 PIC16LF1937T-I/MV (same form factor and footprint) — differing in Package, Program Memory (Flash), I/O Pins, Timers, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1936T-I/MV
✅ Drop-In✓ In Stock
$1.89 / Unit
View Datasheet →PIC16LF1933T-I/MV
✅ Drop-In✓ In Stock
$1.52 / Unit
View Datasheet →PIC16LF1934T-I/MV
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →PIC16LF1937-I/MV
✅ Drop-In✓ In Stock
$2.55 / Unit
View Datasheet →PIC16LF1937T-I/MV Maximum Ratings & Electrical Characteristics
| Product Family | PIC 16F / 16LF (XLP) |
| Core | 8-bit PIC RISC |
| Instruction Width | 14-bit |
| Maximum CPU Speed | 32 MHz |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data SRAM | 512 B |
| Data EEPROM | 256 B |
| Supply Voltage (VDD) | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| Package | 40-UQFN (5x5 mm) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 10-bit, up to 14 channels |
| LCD Driver | Yes, up to 96 segments |
| Communication | 2x EUSART, 2x MSSP (SPI/I2C) |
| Timers | Timer0/2/4/6, Timer1/3/5, ECCP |
| Capacitive Touch | mTouch peripheral |
| RoHS Status | Compliant |
PIC16LF1937T-I/MV Pin Configuration
| Pin 1 | RA2 — I/O / AN2 / VREF- |
| Pin 2 | RA3 — I/O / AN3 / VREF+ |
| Pin 3 | RA4 — I/O / AN4 / T0CKI |
| Pin 4 | RA5 — I/O / AN5 / SS |
| Pin 5 | RE3 — I/O / MCLR (input only) |
| Pin 6 | RA7 — I/O / OSC2 |
| Pin 7 | RA6 — I/O / OSC1 / CLKIN |
| Pin 8 | VDD — Power supply (1.8V to 3.6V) |
| Pin 9 | VSS — Ground |
| Pin 10 | RB7 — I/O / ICSPDAT |
| Pin 11 | RB6 — I/O / ICSPCLK |
| Pin 12 | RB5 — I/O |
| Pin 13 | RB4 — I/O |
| Pin 14 | RB3 — I/O / CCP2 |
| Pin 15 | RB2 — I/O |
| Pin 16 | RB1 — I/O / INT1 |
| Pin 17 | RB0 — I/O / INT0 |
| Pin 18 | RC7 — I/O / RX/DT |
| Pin 19 | RC6 — I/O / TX/CK |
| Pin 20 | RC5 — I/O |
| Pin 21 | RC4 — I/O |
| Pin 22 | RC3 — I/O / SCL |
| Pin 23 | RC2 — I/O / SDA |
| Pin 24 | RC1 — I/O / CCP1 |
| Pin 25 | RC0 — I/O |
| Pin 26 | RD7 — I/O |
| Pin 27 | RD6 — I/O |
| Pin 28 | RD5 — I/O / PWM |
| Pin 29 | RD4 — I/O |
| Pin 30 | RD3 — I/O |
| Pin 31 | RD2 — I/O |
| Pin 32 | RD1 — I/O |
| Pin 33 | RD0 — I/O |
| Pin 34 | RE2 — I/O |
| Pin 35 | RE1 — I/O |
| Pin 36 | RE0 — I/O |
| Pin 37 | RF7 — I/O / LCD SEG |
| Pin 38 | RF6 — I/O / LCD SEG |
| Pin 39 | RF5 — I/O / LCD SEG |
| Pin 40 | RF4 — I/O / LCD SEG |
Typical Applications
PIC16LF1937T-I/MV is suitable for 7 applications: Battery-Powered Sensor Node, HMI with Integrated LCD Display, Automotive Body and Interior Controller, Industrial Sensor Interface Module, Capacitive Touch User Interface, IoT Edge Node with Energy Harvesting, Portable Medical and Wellness Device.
Battery-Powered Sensor Node
The PIC16LF1937T-I/MV's XLP nanoWatt technology with sub-100 nA sleep current and 1.8-3.6V VDD range make it ideal for battery-powered sensor nodes running from a single CR2032 or 2x AA cell. The 32MHz core provides enough performance for periodic sensor reads and a small protocol stack such as Modbus or a proprietary RF link, while 14KB Flash accommodates local DSP-style filtering and calibration tables. Compared with 32-bit alternatives, the PIC16LF1937 extends battery life by 2-4x in duty-cycled applications.
Recommended
HMI with Integrated LCD Display
The PIC16LF1937T-I/MV integrates an LCD driver capable of driving up to 96 segments directly, eliminating the need for an external display driver in small HMI panels. Its 36 I/O pins can source the segment and backplane lines of a 4x24 character or 96-segment custom LCD while the mTouch peripheral adds capacitive buttons without external touch ICs. With 14KB Flash, the firmware can drive full menus, alarm logic, and serial backhaul from a single chip at lower BOM cost than STM32-based HMI designs.
Recommended
Automotive Body and Interior Controller
In non-safety automotive body domains - interior lighting, climate trim, seat controllers, and accessory modules - the PIC16LF1937T-I/MV delivers the right balance of peripherals and cost. The PIC16LF family is AEC-Q100 capable on selected variants; the standard PIC16LF1937 industrial part handles -40C to +85C ambient interior environments with proper PCB thermal design. The EUSART plus MSSP combination supports LIN bus slaves via a small external LIN transceiver, while the 10-bit ADC reads sensor inputs without an external ADC IC.
Recommended
Industrial Sensor Interface Module
The PIC16LF1937T-I/MV is well suited for industrial 4-20 mA loop-powered sensor transmitters and bridge-sensor conditioners. Its 10-bit ADC reads up to 14 analog channels, the MSSP drives I2C sensors, and the EUSART supports RS-485 with an external transceiver such as the MAX3485. With 14KB Flash, the firmware can host calibration constants, linearization tables, and a Modbus RTU slave - all on a single chip that costs less than a typical 32-bit ARM Cortex-M0 MCU.
Recommended
Capacitive Touch User Interface
The mTouch peripheral of the PIC16LF1937T-I/MV enables up to 16 capacitive touch channels for buttons, sliders, and proximity sensing without dedicated touch ICs. Combined with the LCD driver, the same MCU runs a complete touch-and-display HMI from a single chip - ideal for appliances, medical device front panels, and consumer electronics. The CTMU-based charge-time measurement supports both self-capacitance and mutual-capacitance sensing layouts with proper PCB guard patterns.
Recommended
IoT Edge Node with Energy Harvesting
Energy-harvesting IoT nodes - solar, vibration, or thermal - depend on extreme sleep current to operate without a battery. The PIC16LF1937T-I/MV draws less than 100 nA in sleep mode with peripherals off, allowing the same MCU to wake, take a sensor reading, transmit via a companion radio, and return to sleep within a few milliseconds. The 14KB Flash stores a small wireless protocol stack and time-stamped event buffers; the 256B EEPROM retains configuration across power cycles without external NVM.
Recommended
Portable Medical and Wellness Device
Battery-powered medical wearables - glucose meters, pulse oximeters, and fitness trackers - rely on the PIC16LF1937T-I/MV's low-power operation and integrated peripherals. The 10-bit ADC drives photodiode front-ends, the mTouch peripheral handles user input, and the LCD driver presents measurements on a small display. The combination of medical-grade firmware determinism and <100 nA sleep extends battery life to weeks or months on a single coin cell, matching the form factor and cost targets of consumer wellness products.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1937T-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1936T-I/MV | PIC16LF1933T-I/MV | PIC16LF1934T-I/MV | PIC16LF1937-I/MV |
|---|---|---|---|---|---|
| Package | 40-UQFN (5x5 mm) | 40-UQFN (5x5 mm) | 40-UQFN (5x5 mm) | 40-UQFN (5x5 mm) | 40-UQFN (5x5 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 14 KB | 8 KB | 7 KB | 7 KB | 14 KB |
| SRAM | 512 B | 512 B | 256 B | 256 B | 512 B |
| Data EEPROM | 256 B | 256 B | 128 B | 128 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage | 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 3.6 V |
| I/O Pins | 36 | 36 | 25 | 36 | 36 |
| LCD Driver | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes (up to 64 segments) | Yes (up to 72 segments) | Yes (up to 96 segments) |
| mTouch Support | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Largest Flash in the 40-UQFN (MV) PIC16LF193x family (vs PIC16LF1936T-I/MV)
- Industrial temperature range with low-voltage operation (vs PIC16F1937T-I/MV)
- Highest I/O count in the 40-UQFN family (vs PIC16LF1933T-I/MV)
Design Notes
Estimated: at 32MHz with all peripherals active the PIC16LF1937T-I/MV draws approximately 4-6 mA; in sleep with peripherals disabled the XLP core drops below 100 nA. For coin-cell designs, duty-cycle the ADC read so the part spends >99% of its life in sleep. Place a 100nF ceramic decoupling capacitor as close as possible to each VDD/VSS pair and a 10uF bulk capacitor on the main VDD rail - this is mandatory for clean ADC readings.
For mTouch capacitive-sensing designs, surround each touch pad with a hatched ground guard trace and keep one PCB layer continuous as a shield under the touch area. Keep touch traces short and matched in length, and avoid running digital signal traces within 5mm of touch pads. Per Microchip application note AN1250, ground flooding under the touch sensor improves immunity to environmental noise.
The Peripheral Pin Select (PPS) registers on the PIC16LF1937T-I/MV must be unlocked via a specific sequence in firmware before reconfiguration; failure to do so results in locked I/O. Also, the 40-UQFN (MV) package has an exposed thermal pad that MUST be soldered to the PCB ground plane for proper electrical and thermal performance - omitting this pad connection violates the manufacturer layout guide.
Keep the ICSP programming/debug header (PGC/PGD/MCLR/VSS) accessible for in-circuit programming; without this, firmware updates require socket removal. The Vcap pin (if used in the LCD variant) requires a 1uF to 10uF low-ESR ceramic bypass capacitor placed within 2mm of the pin; long traces here cause LCD driver instability.
Compliance Information
RoHS and lead-free per Microchip product page; the standard industrial variant is not AEC-Q100 qualified - for automotive designs use the automotive-graded PIC16F1937-E variants or specific AEC-Q100 screened parts.
