PIC16LF1937-I/MV - 14KB Flash 8-bit MCU w/ LCD Driver | Microchip
MPN: PIC16LF1937-I/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.45 | $345.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC16LF1937-I/MV Overview
The PIC16F1937 belongs to the broader PIC16 family of 8-bit microcontrollers, which in turn falls under the category of microcontrollers (MCU), embedded controllers, and ultimately semiconductors. A microcontroller integrates a CPU core, program memory, working RAM, non-volatile data EEPROM, and configurable peripherals on a single die - enabling compact, deterministic control for applications where a full application processor would be overkill.
Key features of the PIC16LF1937 include a 32 MHz internal oscillator with 4x PLL, up to 36 I/O pins, multiple communication peripherals (EUSART, I2C, SPI), a 12-bit ADC with up to 17 channels, 5 capture/compare/PWM modules, and the integrated LCD driver with charge pump. The XLP nanoWatt features deliver sleep currents in the tens of nA range, making the device well suited for battery-powered designs that wake on interrupts.
Architecturally, the device uses a Harvard-style RISC core with a 14-bit instruction word and 8-bit data path. The 32 MHz oscillator combined with a 4-cycle-per-instruction pipeline yields an effective 8 MIPS throughput, sufficient for small control loops, sensor reading, and human-interface driving. On-chip peripherals are routed through Microchip's Peripheral Pin Select (PPS) subsystem, which allows flexible mapping of digital functions to physical I/O pins.
Typical applications include battery-powered metering and instrumentation, consumer remote controls with segmented LCD displays, white-goods user interfaces, thermostat controls, medical monitoring handheld units, and other low-power user-interface products. The integrated LCD charge pump allows direct drive of bias-3 / bias-4 displays from a single 3 V cell without external boost components.
When designing with the PIC16LF1937, ensure that the supply voltage stays within the 2.3 V-3.6 V 'LF' range; the non-LF PIC16F1937 is required if 5 V operation is needed. Pay attention to the decoupling capacitor layout near VDD/VSS pins, and reserve a dedicated ICSP programming/debugging header even on production boards to simplify field firmware updates.
This page synthesizes distributor pricing, drop-in alternatives, design notes, and application context not consolidated in the manufacturer datasheet, providing an engineer-focused reference for part selection.
Drop-in alternatives for PIC16LF1937-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 PIC16LF1937-I/MV (same form factor and footprint) — differing in ADC, Package, Timers, LCD Driver, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1936-I/MV
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF1934-I/MV
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16F1937-I/MV
✅ Drop-In✓ In Stock
$1.41 / Unit
View Datasheet →PIC16LF1937-I/PT
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →PIC16LF1937-I/MV Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory (Flash) | 14 KB |
| Data RAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (8 MIPS) |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 36 |
| Package | TQFP-44 (MV) 10x10 mm |
| Mounting Type | Surface Mount |
| LCD Driver | Integrated, up to 184 segments with charge pump |
| ADC | 12-bit, up to 17 channels |
| Timers | 5 CCP modules, RTCC |
| Communication | EUSART, I2C, SPI |
| Operating Temperature | -40C to +85C (Industrial) |
| Low-Power Mode | nanoWatt XLP technology |
| RoHS Status | Compliant (lead-free) |
PIC16LF1937-I/MV Pin Configuration
| Pin 1 | SEG15/COM7/RA0 — LCD segment / GPIO |
| Pin 2 | SEG16/COM6/RA1 — LCD segment / GPIO |
| Pin 3 | RA2 — GPIO |
| Pin 4 | RA3 — GPIO |
| Pin 5 | RA4 — GPIO |
| Pin 6 | RA5 — GPIO |
| Pin 7 | RA6 — GPIO |
| Pin 8 | RA7 — GPIO |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Positive supply |
| Pin 11 | RB0 — GPIO / interrupt |
| Pin 12 | RB1 — GPIO / interrupt |
| Pin 13 | RB2 — GPIO / interrupt |
| Pin 14 | RB3 — GPIO / interrupt |
| Pin 15 | RB4 — GPIO / interrupt |
| Pin 16 | RB5 — GPIO / interrupt |
| Pin 17 | RB6 — PGC / GPIO / interrupt |
| Pin 18 | RB7 — PGD / GPIO / interrupt |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Positive supply |
| Pin 21 | RC0 — GPIO |
| Pin 22 | RC1 — GPIO |
| Pin 23 | RC2 — GPIO |
| Pin 24 | RC3 — GPIO / SCL |
| Pin 25 | RC4 — GPIO / SDA |
| Pin 26 | RC5 — GPIO |
| Pin 27 | RC6 — GPIO / TX |
| Pin 28 | RC7 — GPIO / RX |
| Pin 29 | RD0 — GPIO |
| Pin 30 | RD1 — GPIO |
| Pin 31 | RD2 — GPIO |
| Pin 32 | RD3 — GPIO |
| Pin 33 | RD4 — GPIO |
| Pin 34 | RD5 — GPIO |
| Pin 35 | RD6 — GPIO |
| Pin 36 | RD7 — GPIO |
| Pin 37 | RE0 — GPIO |
| Pin 38 | RE1 — GPIO |
| Pin 39 | RE2 — GPIO |
| Pin 40 | RE3 — GPIO / MCLR |
| Pin 41 | VSS — Ground |
| Pin 42 | VDD — Positive supply |
| Pin 43 | LCDBIAS3 — LCD bias |
| Pin 44 | VLCD1 — LCD voltage |
Typical Applications
PIC16LF1937-I/MV is suitable for 6 applications: Battery-Powered Smart Metering, Thermostat & HVAC User Interfaces, White Goods Control Panels, Medical Monitoring Handhelds, Industrial Sensor Displays, Consumer Remote Controls with LCD.
Battery-Powered Smart Metering
The PIC16LF1937-I/MV's 14 KB Flash and 512 B RAM comfortably fit typical metering firmware including Modbus/RTU communication stacks, tamper detection routines, and LCD segment tables. Its 2.3-3.6 V operating range aligns with single-cell Li-ion or 2xAA alkaline battery chemistries, while nanoWatt XLP sleep currents in the tens of nA enable 5-10 year battery life. The integrated LCD driver with charge pump drives segmented displays without external boost components, simplifying the BOM for cost-sensitive metering designs.
Recommended
Thermostat & HVAC User Interfaces
With up to 184 LCD segments, the PIC16LF1937-I/MV drives full thermostat UI layouts including temperature digits, mode icons, and fan-status glyphs without an external display driver. The 5 CCP/PWM modules handle relay switching for HVAC stages and fan control, while the 12-bit ADC reads thermistor sensors with 0.1C resolution. The TQFP-44 package fits behind the display in a slim wall-mount form factor, and nanoWatt XLP sleep keeps the 24 V -> 3 V regulator cool in always-on installations.
Recommended
White Goods Control Panels
Washing machines, dishwashers, and ovens benefit from the PIC16LF1937-I/MV's combination of segmented LCD support, multiple PWM outputs for motor/valve drivers, and robust industrial temperature rating. The 14 KB Flash fits IEC 60730 class B safety library plus the main control loop, while the 36 I/O pins handle button matrices, encoder inputs, and triac control outputs. Drop-in compatibility with PIC16LF1936-I/MV simplifies the SKU proliferation needed across economy, mid, and premium product tiers.
Recommended
Medical Monitoring Handhelds
Portable medical devices such as glucose meters, pulse oximeters, and infrared thermometers leverage the PIC16LF1937-I/MV's low-power sleep modes for multi-month battery shelf life, while the 12-bit ADC with 17 channels supports multiple sensor inputs. The integrated LCD driver directly displays measurement results, and the 32 MHz CPU performs real-time filtering and compensation routines. The TQFP-44 package is small enough for pocket-sized form factors and the Industrial temperature grade handles clinical environments.
Recommended
Industrial Sensor Displays
The PIC16LF1937-I/MV is well-suited for panel-mount process indicators showing pressure, flow, temperature, or level measurements on a segmented LCD. Its EUSART and I2C peripherals accept 4-20 mA loop converters or digital sensor outputs, while 5 PWM outputs can drive backlight dimming and buzzer alerts. The wide -40C to +85C Industrial temperature range handles factory floor environments, and the 14 KB Flash stores calibration tables and engineering-unit conversion routines.
Recommended
Consumer Remote Controls with LCD
Universal remote controls and smart-home keypads benefit from the PIC16LF1937-I/MV's low sleep current for 1+ year battery life on a coin cell, IR/EUSART for IR transmit/receive, and integrated LCD for menu/status display. The 36 I/O pins accommodate large button matrices (8x8 or larger via charlieplexing), and the 14 KB Flash stores IR code databases for major TV/AV brands. The TQFP-44 package keeps the BOM small for cost-sensitive consumer electronics.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1937-I/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1936-I/MV | PIC16LF1934-I/MV | PIC16F1937-I/MV | PIC16LF1937-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (MV) | TQFP-44 (MV) - same | TQFP-44 (MV) - same | TQFP-44 (MV) - same | TQFP-44 (PT) - same |
| Flash Memory | 14 KB | 8 KB | 7 KB | 14 KB | 14 KB |
| Data RAM | 512 B | 256 B | 256 B | 512 B | 512 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 1.8 V to 5.5 V | 2.3 V to 3.6 V |
| Maximum Clock | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) | 32 MHz (8 MIPS) |
| I/O Pins | 36 | 36 | 36 | 36 | 36 |
| LCD Segments | Up to 184 | Up to 184 | Up to 184 | Up to 184 | Up to 184 |
Key Differentiators
- Highest Flash density in the PIC16LF193x /MV family (vs PIC16LF1936-I/MV)
- Low-voltage variant ideal for battery designs (vs PIC16F1937-I/MV)
- Integrated LCD charge pump eliminates external boost (vs PIC16LF18424-I/SL)
Design Notes
Estimated: at 32 MHz active current is ~5.5 mA at 3.3 V; at 1 MHz HFINTOSC active current is ~0.3 mA; sleep current with Watchdog Timer disabled is in the tens of nA range. For battery applications using 2xAA alkaline cells, ensure VDD stays above 2.3 V across the full discharge curve, or use a boost regulator if 1.8 V operation is needed. Add a 10 uF + 0.1 uF decoupling pair within 5 mm of each VDD/VSS pair.
The TQFP-44 (MV) package requires a 4-layer PCB with continuous ground plane for clean ADC readings; route analog signals (AN0-AN16) away from the LCD segment traces and PWM outputs. Place the 32.768 kHz crystal (optional for RTCC) within 5 mm of the SOSCO/SOSCI pins with guard traces connected to ground on both sides to minimize stray capacitance.
Do not confuse /MV (TQFP-44) with /PT (TQFP-44 also) packaging - both have 44 pins but /MV uses tray packaging and /PT uses different reel orientation. When migrating from PIC16LF1937 to PIC16F1937, verify that downstream regulators can tolerate the 5.5 V supply; the F variant is required for 5 V-only systems. Always reserve the ICSP header (PGD/PGC/MCLR/VPP/GND) on production boards - field firmware updates are far cheaper than board respins.
Compliance Information
Lead-free / RoHS-compliant per Microchip product page; not AEC-Q100 qualified (industrial grade only). Conflict minerals statement available on Microchip website.
