PIC16LF1937-I/PT - 8-bit XLP MCU, 14KB Flash, LCD, 44-TQFP
MPN: PIC16LF1937-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.07 | $30.70 |
| 100 | $2.74 | $274.00 |
| 500 | $2.46 | $1,230.00 |
| 1,000 | $2.21 | $2,210.00 |
PIC16LF1937-I/PT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, peripherals such as ADC, timers, communication interfaces, and I/O pins on one die. Within the broader semiconductor taxonomy, this PIC16LF1937 sits in the hierarchy of 8-bit microcontroller -> RISC microcontroller -> embedded controller -> integrated circuit. The "LF" prefix denotes the low-voltage (1.8-3.6V F-range) variant optimized for battery-powered designs, while the non-LF PIC16F1937 operates from 2.3-5.5V. Microchip's XLP technology enables sleep currents in the nanoamp range, making this MCU suited to always-on applications.
Key features of the PIC16LF1937-I/PT include an integrated LCD driver capable of driving segment displays up to a defined common/segment configuration, an enhanced 14-channel 10-bit ADC, multiple Enhanced USART, SPI, and I2C interfaces, Capture/Compare/PWM modules, and 36 digital I/O pins. The Instruction Set Architecture (ISA) is the standard PIC mid-range 14-bit core, supported by Microchip's MPLAB X IDE, XC8 compiler, and a broad ecosystem of programmers/debuggers including PICkit and ICD.
Architecturally, the device uses a Harvard bus (separate program and data paths) and a RISC-style 49-instruction set, which keeps interrupt latency deterministic and code execution efficient. The integrated LCD driver supports up to 96 segments, allowing direct connection of glass displays without external charge-pump components. On-chip CTMU (Charge Time Measurement Unit) enables touch and proximity sensing applications without external analog front-ends.
Typical applications include low-power battery sensor nodes, medical glucose and portable diagnostic meters, consumer appliances with LCD user interfaces (microwave ovens, washing machines), industrial HMI panels, e-meter and instrumentation clusters, and remote controls. The wide peripheral set and segment-LCD integration reduce BOM cost by eliminating external drivers.
When designing with the PIC16LF1937-I/PT, ensure the 1.8-3.6V supply rail stays within regulation at peak load transients. Decouple VDD with 100nF plus 10uF bulk capacitors placed within a few millimeters of the pins. Use the ICD3 or PICkit 4 for in-circuit debug; both the ICSP PGC/PGD and the dedicated ICSPCLK/ICSPDAT lines are multiplexed on PORTB.
This page combines distributor pricing, drop-in same-package alternatives from Microchip's PIC16 family, design notes, and an AI-optimized FAQ not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1937-I/PT — 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 PIC16LF1937-I/PT (same form factor and footprint) — differing in Package, Timers, LCD Driver, Operating Temperature, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F1937-I/PT
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16F1937-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1936-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1934-I/PT
✅ Drop-In✓ In Stock
$2.41 / Unit
View Datasheet →PIC16F946-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF1937-I/PT Maximum Ratings & Electrical Characteristics
| Family | PIC16F |
| Core | 8-bit PIC16 (14-bit instruction word) |
| CPU Speed | 32 MHz |
| Program Memory | 14 KB Flash (8K x 14 words) |
| RAM | 512 bytes |
| EEPROM | 256 bytes |
| I/O Pins | 36 |
| Supply Voltage | 1.8 V to 3.6 V |
| Package | 44-pin TQFP (10 x 10 mm, PT suffix) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40 C to +85 C (Industrial, "I" grade) |
| ADC | 10-bit, 14 channels |
| LCD Driver | Yes, integrated segment driver up to 96 segments |
| Communication | EUSART, I2C, SPI |
| Timers | 4 x 8-bit, 1 x 16-bit |
| PWM Modules | Enhanced CCP, multiple PWM outputs |
| CTMU | Charge Time Measurement Unit (touch/proximity) |
| XLP Technology | nanoWatt eXtreme Low Power |
| RoHS Status | Compliant |
PIC16LF1937-I/PT Pin Configuration
| Pin 1 | RE3/MCLR/VPP — Input only; Master Clear (reset) / programming voltage |
| Pin 2 | RA0 — PORTA bit 0 / AN0 / SEG12 |
| Pin 3 | RA1 — PORTA bit 1 / AN1 / SEG7 |
| Pin 4 | RA2 — PORTA bit 2 / AN2 / VREF- |
| Pin 5 | RA3 — PORTA bit 3 / AN3 / VREF+ / SEG15 |
| Pin 6 | RA4 — PORTA bit 4 / AN4 / T0CKI / SEG4 |
| Pin 7 | RA5 — PORTA bit 5 / AN5 / SEG5 |
| Pin 8 | RA6 — PORTA bit 6 / OSCCLKOUT / SEG1 |
| Pin 9 | RA7 — PORTA bit 7 / OSC1 / CLKIN / SEG2 |
| Pin 10 | OSC2/RA8 — PORTA bit 8 / OSC2 / CLKOUT / SEG0 |
| Pin 11 | VDD — Positive supply voltage |
| Pin 12 | VSS — Ground reference |
| Pin 13 | RB0 — PORTB bit 0 / AN12 / INT0 / SEG30 |
| Pin 14 | RB1 — PORTB bit 1 / AN10 / SEG8 |
| Pin 15 | RB2 — PORTB bit 2 / AN8 / SEG9 |
| Pin 16 | RB3 — PORTB bit 3 / AN9 / SEG10 / CCP2 |
| Pin 17 | RB4 — PORTB bit 4 / AN11 / SEG11 / KBI0 |
| Pin 18 | RB5 — PORTB bit 5 / SEG28 / KBI1 |
| Pin 19 | RB6 — PORTB bit 6 / ICSPCLK / SEG29 / KBI2 |
| Pin 20 | RB7 — PORTB bit 7 / ICSPDAT / SEG3 / KBI3 |
| Pin 21 | RC0 — PORTC bit 0 / AN16 / SEG32 |
| Pin 22 | RC1 — PORTC bit 1 / AN17 / SEG24 |
| Pin 23 | RC2 — PORTC bit 2 / AN13 / CCP1 / SEG13 |
| Pin 24 | RC3 — PORTC bit 3 / AN14 / SEG17 / SCL |
| Pin 25 | RC4 — PORTC bit 4 / AN15 / SDA / SEG16 |
| Pin 26 | RC5 — PORTC bit 5 / SEG12 |
| Pin 27 | RC6 — PORTC bit 6 / AN18 / TX/CK / SEG27 |
| Pin 28 | RC7 — PORTC bit 7 / AN19 / RX/DT / SEG26 |
| Pin 29 | RD0 — PORTD bit 0 / SEG0 |
| Pin 30 | RD1 — PORTD bit 1 / SEG1 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage |
| Pin 33 | RD2 — PORTD bit 2 / SEG2 |
| Pin 34 | RD3 — PORTD bit 3 / SEG3 |
| Pin 35 | RD4 — PORTD bit 4 / SEG4 |
| Pin 36 | RD5 — PORTD bit 5 / SEG5 |
| Pin 37 | RD6 — PORTD bit 6 / SEG6 |
| Pin 38 | RD7 — PORTD bit 7 / SEG7 |
| Pin 39 | RE0 — PORTE bit 0 / AN5 / SEG21 |
| Pin 40 | RE1 — PORTE bit 1 / AN6 / SEG22 |
| Pin 41 | RE2 — PORTE bit 2 / AN7 / SEG23 |
| Pin 42 | SEG31 — LCD segment 31 drive output |
| Pin 43 | VLCD1 — LCD bias voltage 1 |
| Pin 44 | VLCD2 — LCD bias voltage 2 / COM0 |
Typical Applications
PIC16LF1937-I/PT is suitable for 6 applications: Battery-Powered Sensor Nodes, Medical Glucose and Portable Diagnostic Meters, Consumer Appliances with LCD UI (Microwave, Washing Machine), Industrial HMI Panels and E-Meter Clusters, Remote Controls and IR/RF Handsets, Small Appliance Control and Toy Electronics.
Battery-Powered Sensor Nodes
The PIC16LF1937-I/PT fits battery-powered wireless sensor nodes because of its 1.8-3.6V nanoWatt XLP operation, which keeps sleep current in the nanoamp range and extends coin-cell life beyond a year. With 14KB Flash it can host a Zigbee or LoRa MAC stack, and its integrated 10-bit ADC plus CTMU enable temperature, humidity, and capacitive-touch measurements without an external analog front-end. The 36 I/O pins comfortably accommodate SPI/ I2C sensor buses and GPIO-driven LEDs while keeping the design single-layer.
Recommended
Medical Glucose and Portable Diagnostic Meters
Glucose meters and portable diagnostic devices benefit from the PIC16LF1937-I/PT's low 1.8V operation that runs on two AAA cells, plus the integrated LCD driver that eliminates an external segment driver. Its 14KB Flash handles a complete electrochemical sensing algorithm with calibration tables, and 512B RAM buffers multiple readings before transmission. The enhanced CCP/PWM drives audible buzzer feedback. The extended -40C to +85C industrial grade supports home and clinical environments with the same BOM.
Recommended
Consumer Appliances with LCD UI (Microwave, Washing Machine)
Microwave ovens, washing machines and other white goods use the PIC16LF1937-I/PT because the integrated segment LCD driver can directly drive the 4-mux 16-segment display showing time, status icons, and mode indicators. The 32MHz core plus 14KB Flash run a state-machine UI with up to 16 segmented icons and rotary encoder input on PORTB interrupts. EUSART links to the motor inverter for bidirectional feedback, and the CTMU detects keypad touches without mechanical switches.
Recommended
Industrial HMI Panels and E-Meter Clusters
Industrial HMI panels and electricity-meter front panels use the PIC16LF1937-I/PT because the integrated LCD driver supports up to 96 segments, ideal for displaying cumulative kWh, voltage, and tariff indicators on low-cost glass LCDs. The 10-bit ADC with 14 channels digitizes current transformers, voltage dividers, and temperature sensors in the same die. The 44-TQFP footprint simplifies the meter PCB and the 1.8-3.6V range allows direct battery backup during line-power outage.
Recommended
Remote Controls and IR/RF Handsets
TV remote controls and RF handsets adopt the PIC16LF1937-I/PT because its nanoWatt XLP sleep current in the tens of nanoamps means a coin-cell can last 5+ years. The integrated CTMU enables cap-touch buttons, replacing mechanical switches and improving reliability. 14KB Flash holds vendor IR protocols (RC5/RC6/ NEC) and pairing sequences, while the 32MHz core delivers accurate carrier frequencies without external crystals. The 44-TQFP keeps the BOM small.
Recommended
Small Appliance Control and Toy Electronics
Small appliances, electronic toys, and educational kits use the PIC16LF1937-I/PT because the 14KB Flash and 32MHz CPU run PWM-driven motor control, audio playback, and capacitive sensing in one chip. The 1.8-3.6V range works directly from 2x AA batteries, while the integrated LCD driver supports low-cost segmented display modules. The 36 I/O pins give designers ample headroom for LEDs, buttons, I2C sensors, and motor bridges on the same PCB without expanding the BOM.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1937-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F1937-I/PT | PIC16F1937-E/PT | PIC16LF1936-I/PT | PIC16LF1934-I/PT | PIC16F946-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (10x10 mm, PT suffix) | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same | 44-pin TQFP - same |
| Supply Voltage | 1.8 V to 3.6 V (LF) | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 2.3 V to 5.5 V |
| Flash | 14 KB | 14 KB | 14 KB | 7 KB | 7 KB | 28 KB |
| RAM | 512 bytes | 512 bytes | 512 bytes | 256 bytes | 256 bytes | 1 KB |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Lowest operating voltage in the family for 2x AA battery designs (vs PIC16F1937-I/PT)
- Higher Flash/RAM density vs lower-cost family siblings (vs PIC16LF1936-I/PT)
- Industrial temperature grade matches most consumer/medical designs (vs PIC16F1937-E/PT)
- Smaller RAM vs larger-memory PIC16F946-I/PT for cost-sensitive UI panels (vs PIC16F946-I/PT)
Design Notes
The PIC16LF1937-I/PT integrates a low-power voltage regulator (LPBOR) and an Ultra-Low-Power Wake (ULPWU) module that lets you wake from sleep using a slowly-charging RC network on RA0. For battery life, ensure Sleep is entered with the LFINTOSC selected (default 31 kHz internal RC) and all unused peripherals disabled. Bulk-decouple VDD (pins 11, 32) with a 10uF ceramic plus 100nF placed within 5 mm of the MCU to suppress switching transients.
The 44-pin TQFP (10x10mm body, 0.8mm pitch) requires 0.3mm-wide traces and 0.4mm-pitch vias for fan-out under the package. Place the ICSP header (PGECX/PGEDX) on a 0.1-inch header so PICkit 4 can connect without disassembly. Route the analog AVCC/AVSS pins separately from digital VDD/VSS, and use a star-ground topology if you have analog sensors in your design. Keep the VLCD1/VLCD2 traces short to avoid leakage on segment lines.
Never drive an LED directly from any PIC16 I/O pin when the pin's source/sink current exceeds 25 mA per pin or 200 mA total VDD budget. Use a current-limiting resistor and a transistor if the load requires more current. Note that RE3 (pin 1) is input-only - it cannot drive output. When migrating code from PIC16F1937 to PIC16LF1937, verify LFINTOSC startup time is acceptable for your application - the LF variant takes slightly longer to stabilize from POR.
For EUSART at 115200 baud, ensure the system clock (HFINTOSC or HS crystal) is accurate to within +/-2% to keep baud error below the asynchronous receiver's tolerance. The integrated CTMU is sensitive to leakage - keep the CTMU charge/discharge traces short and surrounded by ground pours to avoid temperature drift. According to Microchip's TB3065 application note, calibrate CTMU readings against an internal band-gap reference once per second for best accuracy.
Compliance Information
RoHS compliant and lead-free per Microchip product page. No AEC-Q100 qualification - select PIC16F1937-E/PT only for non-automotive extended temperature. Pin-paste finish: Matte Tin (Sn).
