PIC16LF1937-E/MV - 8-Bit MCU, 14KB Flash, 32MHz, 40-UQFN | Microchip
MPN: PIC16LF1937-E/MV ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.92 | $4.92 |
| 10 | $4.43 | $44.30 |
| 100 | $3.93 | $393.00 |
| 500 | $3.55 | $1,775.00 |
| 1,000 | $3.15 | $3,150.00 |
PIC16LF1937-E/MV Overview
An 8-bit microcontroller (MCU) is a single integrated processor that combines a CPU, non-volatile program memory (typically Flash), working RAM, EEPROM, and a rich set of peripheral interfaces on one die. PIC16F-family MCUs use a Harvard RISC architecture with a small, deterministic instruction set, which simplifies firmware development and keeps interrupt latency predictable - traits valued in safety-sensitive and low-power embedded systems.
Key features include up to 36 general-purpose I/O pins with high-current source/sink for direct LED drive, individually programmable interrupt-on-change and weak pull-ups, a 10-bit ADC, an integrated LCD controller supporting up to 96 segments with contrast control, capacitive-touch sensing (mTouch), and the nanoWatt XLP idle/sleep modes that allow standby currents in the microamp range. Peripherals also include multiple timers, capture/compare/PWM modules, an EUSART, MSSP (SPI/I2C), and an internal voltage reference with selectable output levels.
The architecture pairs a 14-bit instruction word with a separate data path, allowing most instructions to execute in a single cycle. The 32 MHz oscillator combined with a 4-clock-per-instruction pipeline yields roughly 8 MIPS peak throughput, sufficient for sensor fusion, LCD UI updates, and protocol bridging in compact, battery-powered products.
Typical applications include low-power handheld instruments with segmented LCD displays, capacitive-touch user interfaces, battery-powered sensor nodes with sleep-mode duty cycling, and consumer white-goods control panels that combine an LCD, a keypad, and a few LEDs. The wide peripheral mix also suits automotive body modules and industrial HMI nodes where deterministic 8-bit control is preferred over a 32-bit MCU.
A key design consideration is decoupling: place a 0.1 uF ceramic bypass close to VDD with a bulk tantalum or aluminum-polymer cap on the analog rail, and route the exposed pad to a continuous ground plane for thermal dissipation and noise immunity. For LCD designs, bias the segments with the internal charge pump only when the load allows, and verify that idle current budgets match the chosen sleep mode.
This page synthesizes distributor pricing, drop-in UQFN-40 alternatives from the same PIC16 family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC16LF1937-E/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-E/MV (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, ADC, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16LF1936-E/MV
✅ Drop-In✓ In Stock
$2.32 / Unit
View Datasheet →PIC16LF1936-I/MV
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16LF1936T-I/MV
✅ Drop-In✓ In Stock
$1.89 / Unit
View Datasheet →PIC16LF1934-I/MV
✅ Drop-In✓ In Stock
$1.28 / Unit
View Datasheet →PIC16F1937-E/MV
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16LF18875-E/MV
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$1.82 / Unit
View Datasheet →PIC16LF1937-E/MV Maximum Ratings & Electrical Characteristics
| Product Type | 8-bit Flash Microcontroller (MCU) |
| Series | PIC16F (PIC XLP 16F family) |
| Core Architecture | PIC16 Harvard RISC, 14-bit instruction word |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum Clock Speed | 32 MHz |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 36 |
| Package | 40-pin UQFN (5x5 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +125C (extended, -E suffix) |
| Integrated LCD Controller | Up to 96 segments |
| ADC | 10-bit |
| Low-Power Technology | nanoWatt XLP |
| Capacitive Sensing | mTouch supported |
| RoHS Status | Lead Free, RoHS compliant |
PIC16LF1937-E/MV Pin Configuration
| Pin 1 | RE3/MCLR — Input-only pin / Master Clear (reset) |
| Pin 2 | RA0 — PORTA bit 0 / analog input |
| Pin 3 | RA1 — PORTA bit 1 / analog input |
| Pin 4 | RA2 — PORTA bit 2 / analog input |
| Pin 5 | RA3 — PORTA bit 3 / analog input |
| Pin 6 | RA4 — PORTA bit 4 |
| Pin 7 | RA5 — PORTA bit 5 |
| Pin 8 | RA6 — PORTA bit 6 |
| Pin 9 | RA7 — PORTA bit 7 |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply (2.3V-3.6V) |
| Pin 12 | RB0 — PORTB bit 0 / interrupt-on-change |
| Pin 13 | RB1 — PORTB bit 1 / interrupt-on-change |
| Pin 14 | RB2 — PORTB bit 2 / interrupt-on-change |
| Pin 15 | RB3 — PORTB bit 3 / interrupt-on-change |
| Pin 16 | RB4 — PORTB bit 4 / interrupt-on-change |
| Pin 17 | RB5 — PORTB bit 5 / interrupt-on-change |
| Pin 18 | RB6 — PORTB bit 6 / interrupt-on-change / ICSP clock |
| Pin 19 | RB7 — PORTB bit 7 / interrupt-on-change / ICSP data |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Positive supply (2.3V-3.6V) |
| Pin 22 | RC0 — PORTC bit 0 |
| Pin 23 | RC1 — PORTC bit 1 |
| Pin 24 | RC2 — PORTC bit 2 |
| Pin 25 | RC3 — PORTC bit 3 |
| Pin 26 | RC4 — PORTC bit 4 |
| Pin 27 | RC5 — PORTC bit 5 |
| Pin 28 | RC6 — PORTC bit 6 |
| Pin 29 | RC7 — PORTC bit 7 |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply (2.3V-3.6V) |
| Pin 32 | RD0 — PORTD bit 0 |
| Pin 33 | RD1 — PORTD bit 1 |
| Pin 34 | RD2 — PORTD bit 2 |
| Pin 35 | RD3 — PORTD bit 3 |
| Pin 36 | RD4 — PORTD bit 4 |
| Pin 37 | RD5 — PORTD bit 5 |
| Pin 38 | RD6 — PORTD bit 6 |
| Pin 39 | RD7 — PORTD bit 7 |
| Pin 40 | RE0 — PORTE bit 0 |
| Pin 41 | RE1 — PORTE bit 1 |
| Pin 42 | RE2 — PORTE bit 2 |
| Pin 43 | VSS — Ground reference (exposed pad / e-pad) |
| Pin 44 | VDD — Positive supply (exposed pad / e-pad) |
Typical Applications
PIC16LF1937-E/MV is suitable for 6 applications: Low-Power Handheld Instrument with LCD, Capacitive Touch User Interface, Battery-Powered Sensor Node, Industrial HMI Control Panel, Consumer White-Goods Control Board, Automotive Body Control Module.
Low-Power Handheld Instrument with LCD
The PIC16LF1937-E/MV is an excellent fit for handheld battery instruments such as digital multimeters, thermometers, and clamp meters that need a segmented LCD readout. Its integrated LCD controller supports up to 96 segments with built-in contrast control and an internal charge pump, removing the need for an external LCD driver and reducing BOM cost. The nanoWatt XLP sleep currents below 1 uA let the device spend most of its life in idle, extending coin-cell or 2x AA battery life well beyond a year. The 14KB Flash and 512B SRAM cover typical UI state machines plus calibration tables, while 36 I/O drive the keypad matrix and front-panel LEDs directly. Place 0.1uF ceramic decoupling close to VDD and route the exposed pad to a continuous ground plane for clean analog readings.
Recommended
Capacitive Touch User Interface
The PIC16LF1937-E/MV integrates Microchip mTouch capacitive sensing modules that scan up to 36 touch electrodes without external touch ICs, making it ideal for touch-button and slider HMIs on appliances and consumer products. Combined with the LCD controller and 32 MHz core, the MCU can run a touch scan plus a refresh of a 32-segment LCD on the same instruction budget, eliminating the need for a dedicated touch controller. The 14KB Flash holds mTouch libraries plus application code, while 512B SRAM buffers the touch and LCD update state. The 2.3V minimum supply lets the design run from a single-cell Li-ion battery. Use guarded traces around touch electrodes and route the exposed pad to a clean ground pour for best touch sensitivity.
Recommended
Battery-Powered Sensor Node
The PIC16LF1937-E/MV is purpose-built for wireless sensor nodes that wake briefly to sample sensors, transmit, and return to deep sleep. The nanoWatt XLP technology supports sleep currents in the microamp range with RAM retention and a wake-on-interrupt from the real-time clock calendar, enabling multi-year battery life on 2x AA cells. The 10-bit ADC samples thermistors, photo-diodes, and 4-20mA loop sensors directly through the analog MUX, while the EUSART links to an external sub-GHz or BLE module for transmission. The 256-byte EEPROM stores calibration constants and node IDs without external memory. Duty-cycle the radio, place a 10uF bulk cap on the analog rail, and let the watchdog timer wake the node on fault.
Recommended
Industrial HMI Control Panel
The PIC16LF1937-E/MV drives industrial HMI panels that combine a segmented LCD, a keypad, status LEDs, and a few relay outputs - all without an external LCD driver. The 36 I/O with high-current source/sink drive LEDs and relay coils directly, while the integrated LCD controller presents process variables and alarms on a 48-96 segment display. The extended -40C to +125C operating range (E suffix) survives outdoor enclosures and machinery cabinets, and the 14KB Flash stores multi-language UI strings plus the process-control state machine. Add an RS-485 transceiver on the EUSART for Modbus RTU communication with a PLC.
Recommended
Consumer White-Goods Control Board
The PIC16LF1937-E/MV is widely used as the main controller in washing machines, dishwashers, microwave ovens, and induction cooktops where a segmented LCD displays programs, timers, and status icons. Its integrated LCD controller with up to 96 segments handles a typical 7-segment + icon display without an external driver, reducing BOM cost and PCB area. The 32 MHz core executes the user-interface loop, motor-control sequencing, and safety checks in a deterministic, single-cycle instruction set. The 256-byte EEPROM stores user preferences and fault logs across power cycles. Use opto-isolated triac drivers for AC loads and a TVS diode on the mains input for surge protection.
Recommended
Automotive Body Control Module
The PIC16LF1937-E/MV (extended -40C to +125C variant) handles non-safety body electronics such as interior lighting, mirror adjustment, and accessory control in entry-level automotive applications. The 36 I/O drive MOSFETs and relays directly, while the EUSART and MSSP interface to LIN bus and local sensor networks. The nanoWatt XLP sleep modes are essential for parked-vehicle quiescent current budgets typically below 100 uA per module. The 14KB Flash stores the LIN stack plus the application logic. Add a LIN transceiver such as MCP2003B and a 5V regulator for the bus side, with proper reverse-battery and load-dump protection on the supply rail.
Recommended
Recommended Products Summary
Engineering reference data for PIC16LF1937-E/MV — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16LF1936-E/MV | PIC16LF1936-I/MV | PIC16LF1934-I/MV | PIC16F1937-E/MV | PIC16LF18875-E/MV |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-UQFN (5x5) | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same | 40-UQFN (5x5) - same |
| Program Memory (Flash) | 14 KB (8K x 14) | 8 KB | 8 KB | 7 KB | 14 KB | 14 KB |
| Data SRAM | 512 bytes | 512 bytes | 512 bytes | 256 bytes | 512 bytes | 1 KB |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Supply Voltage Range | 2.3 V to 3.6 V (LF) | 2.3 V to 3.6 V (LF) | 2.3 V to 3.6 V (LF) | 2.3 V to 3.6 V (LF) | 1.8 V to 5.5 V (F) | 1.8 V to 3.6 V (LF) |
| I/O Pins | 36 | 36 | 36 | 36 | 36 | 36 |
| Operating Temperature | -40C to +125C (E suffix) | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +125C |
| Integrated LCD Controller | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes (up to 96 segments) | Yes (up to 96 segments) | No |
Key Differentiators
- On-chip LCD controller with up to 96 segments (vs PIC16LF18875-E/MV)
- Lower power operation than F-version variant (vs PIC16F1937-E/MV)
- 14KB Flash is the largest in the PIC16LF193x family (vs PIC16LF1934-I/MV)
Design Notes
Estimated: at 32 MHz active and 3.3V supply, the PIC16LF1937-E/MV typical active current is approximately 5-8 mA. Place a 0.1 uF ceramic bypass capacitor within 5 mm of each VDD pin (40-UQFN has multiple VDD/VSS pairs) and add a single 10 uF bulk tantalum or aluminum-polymer cap on the analog rail to suppress switching transients. For battery-powered designs, leverage nanoWatt XLP sleep modes where IPD can drop below 1 uA with RAM retention; verify the chosen sleep mode disables unused peripherals in firmware to meet the data sheet sleep current number.
The 40-UQFN (MV) package relies on the center exposed pad (EP) for thermal dissipation and ground return. Solder the EP to a continuous ground pour with multiple thermal vias to the inner ground plane, following the Microchip recommended land pattern. Estimated theta_JA is approximately 30-40 C/W on a 4-layer JEDEC test board; derate by 20-30% on a 2-layer board with limited copper. For continuous 32 MHz operation at 125C ambient, ensure the PCB copper area around the EP maintains junction temperature below 150C - this typically requires at least 1 square inch of top-side copper tied to the EP.
Route the ICSP clock (RB6) and ICSP data (RB7) lines as short as possible with no series resistors, per Microchip ICD programming guidelines. Keep the VPP/MCLR line (RE3) accessible for in-circuit programming and add a 10 kohm pull-up to VDD. Place decoupling caps symmetrically around the UQFN footprint with wide ground return paths. For LCD designs, route the SEG and COM traces away from switching nodes and consider a ground guard ring around sensitive analog inputs to reduce crosstalk from digital signals.
Common pitfalls include: (1) exceeding 3.6V on VDD (the LF variant is not 5V tolerant - use PIC16F1937 for 5V systems); (2) failing to disable unused peripherals in firmware, which adds several hundred microamps to sleep current and breaks nanoWatt XLP budgets; (3) leaving the MCLR pin floating - always add a pull-up to VDD for reliable reset; (4) configuring analog inputs as digital outputs while the ADC reads them, causing contention. Verify CONFIG words in code (FOSC, WDTE, PWRTE, MCLRE) match the hardware design before programming.
Compliance Information
RoHS compliant lead-free package per Microchip product page. Standard PIC16LF1937-E/MV is not AEC-Q100 qualified; for AEC-Q100 automotive-grade PIC16F193x/PIC16LF193x, look at specific -VAO or automotive part numbers. Conflict-minerals statement available from Microchip.
