PIC16LF1937-E/P - 8-Bit 32MHz MCU 14KB Flash LCD | Microchip
Référence : PIC16LF1937-E/P ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.36 | $3,36 |
| 10 | $3.02 | $30,20 |
| 100 | $2.69 | $269,00 |
| 500 | $2.36 | $1 180,00 |
| 1 000 | $2.15 | $2 150,00 |
PIC16LF1937-E/P Présentation
What is an 8-bit microcontroller? An MCU (microcontroller unit) is a single-chip computer integrating a CPU core, program memory (Flash), data memory (RAM and EEPROM), peripheral interfaces (timers, ADC, UART, SPI, I2C), and general-purpose I/O into one package. The PIC16LF1937 belongs to the PIC16 mid-range family, which sits in the hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. The 'LF' suffix designates the low-voltage Flash variant optimized for battery-powered applications using nanoWatt XLP technology to minimize active and sleep currents.
Key features include an integrated LCD controller supporting up to 96 segments with variable clock input and contrast control, capacitive sensing (mTouch) capability via the on-chip CPS module, a 10-bit ADC with up to 14 channels, multiple communication peripherals (EUSART, two SPI, two I2C), and 35 high-current source/sink I/O pins capable of directly driving LEDs. Individually programmable weak pull-ups and interrupt-on-change pins simplify board design by eliminating external resistors.
The architecture uses a 14-bit instruction word RISC core with a hardware stack and 49 instruction types, enabling deterministic interrupt response and tight C-code generation through the MPLAB XC8 compiler. The device supports in-circuit serial programming (ICSP) and in-circuit debugging (ICD) via two pins, allowing firmware updates and real-time debugging without removing the part from the board. The nanoWatt XLP technology provides multiple idle and sleep modes with currents below 1 µA in deep sleep, making the part suitable for energy-harvesting and battery-backed applications.
Typical applications include industrial control panels with LCD displays, automotive body and instrument clusters (the part carries AEC-Q100 references per Microchip qualification packages), consumer white goods, battery-powered sensor nodes, HVAC controllers, and any low-cost embedded design that needs a built-in segmented LCD driver. The 40-pin PDIP package remains popular for prototyping and through-hole manufacturing lines where socketed parts simplify rework.
A key design consideration is selecting the correct voltage variant: the PIC16F1937-E/P (2.3 V-5.5 V) is recommended when the system runs from a regulated 5 V rail, while the PIC16LF1937-E/P is required when the supply is 1.8 V-3.6 V or when minimizing sleep current is critical. Engineers should also verify that the 14 KB Flash is sufficient for the application and that the 36 I/O pins meet the peripheral count requirement.
This page synthesizes distributor pricing, verified drop-in alternatives, pinout details, and practical design notes not consolidated on the manufacturer datasheet front page, helping engineers shorten the design-in cycle for PIC16LF1937-E/P-based products.
Alternatives de remplacement direct pour PIC16LF1937-E/P — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16LF1937-E/P (même facteur de forme et même empreinte) — différant par Operating Temperature, Package, Timers, Data EEPROM, Data SRAM.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16F1937-E/P
✅ Remplacement direct✓ En stock
$2.2 / unité
Voir la fiche technique →PIC16LF1937-I/P
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1937-E/SP
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
PIC16LF1936-I/P
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
PIC16LF1937-E/P Valeurs maximales et caractéristiques électriques
| Core Architecture | PIC16 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Frequency | 32 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Pins | 36 |
| Timers | 5 (Timer0/1/2/4/6) |
| ADC | 10-bit, up to 14 channels |
| LCD Driver Segments | Up to 96 |
| Communication Peripherals | EUSART, 2x SPI, 2x I2C |
| Capacitive Sensing (mTouch) | Yes |
| Température de fonctionnement | -40 °C to +125 °C |
| Boîtier | 40-pin PDIP (0.600", 15.24 mm) |
| Type de montage | Through-Hole (DIP) |
| Low-Power Technology | nanoWatt XLP |
| ICSP / ICD | Yes (2-wire) |
| Statut RoHS | Compliant |
Configuration des broches de PIC16LF1937-E/P
| Broche 1 | RA0/AN0/ULPWU/CPS0 — PORTA bit 0, analog input 0, ultra-low-power wake-up, CPS channel 0 |
| Broche 2 | RA1/AN1/CPS1 — PORTA bit 1, analog input 1, CPS channel 1 |
| Broche 3 | RA2/AN2/CPS2 — PORTA bit 2, analog input 2, CPS channel 2 |
| Broche 4 | RA3/AN3/CPS3 — PORTA bit 3, analog input 3, CPS channel 3 |
| Broche 5 | RA4/AN4/CPS4/T0CKI — PORTA bit 4, analog input 4, CPS channel 4, Timer0 clock input |
| Broche 6 | RA5/AN5/CPS5/SS — PORTA bit 5, analog input 5, CPS channel 5, SPI slave select |
| Broche 7 | RA6/OSC2/CLKOUT — PORTA bit 6, oscillator output, clock out |
| Broche 8 | RA7/OSC1/CLKIN — PORTA bit 7, oscillator input, clock in |
| Broche 9 | RE3/MCLR/Vpp — PORTE bit 3, master clear reset, programming voltage input |
| Broche 10 | RC0/SOSCO/SCLKI — PORTC bit 0, secondary oscillator output, scan clock input |
| Broche 11 | RC1/SOSCI — PORTC bit 1, secondary oscillator input |
| Broche 12 | RC2/CCP1 — PORTC bit 2, Capture/Compare/PWM 1 |
| Broche 13 | RC3/SEG13 — PORTC bit 3, LCD segment 13 |
| Broche 14 | RC4/SEG14 — PORTC bit 4, LCD segment 14 |
| Broche 15 | RC5/SEG15 — PORTC bit 5, LCD segment 15 |
| Broche 16 | RC6/SEG16/TX/CK — PORTC bit 6, LCD segment 16, EUSART TX/CK |
| Broche 17 | RC7/SEG17/RX/DT — PORTC bit 7, LCD segment 17, EUSART RX/DT |
| Broche 18 | RD0/SEG0 — PORTD bit 0, LCD segment 0 |
| Broche 19 | RD1/SEG1 — PORTD bit 1, LCD segment 1 |
| Broche 20 | RD2/SEG2 — PORTD bit 2, LCD segment 2 |
| Broche 21 | RD3/SEG3 — PORTD bit 3, LCD segment 3 |
| Broche 22 | RD4/SEG4 — PORTD bit 4, LCD segment 4 |
| Broche 23 | RD5/SEG5 — PORTD bit 5, LCD segment 5 |
| Broche 24 | RD6/SEG6 — PORTD bit 6, LCD segment 6 |
| Broche 25 | RD7/SEG7 — PORTD bit 7, LCD segment 7 |
| Broche 26 | Vss — Ground reference |
| Broche 27 | VDD — Positive supply voltage (1.8 V to 3.6 V) |
| Broche 28 | RB0/AN12/INT0/SEG8 — PORTB bit 0, analog input 12, external interrupt 0, LCD segment 8 |
| Broche 29 | RB1/AN10/INT1/SEG9 — PORTB bit 1, analog input 10, external interrupt 1, LCD segment 9 |
| Broche 30 | RB2/AN8/INT2/SEG10 — PORTB bit 2, analog input 8, external interrupt 2, LCD segment 10 |
| Broche 31 | RB3/AN9/CCP2/SEG11 — PORTB bit 3, analog input 9, CCP2, LCD segment 11 |
| Broche 32 | RB4/AN11/SDA/SEG12 — PORTB bit 4, analog input 11, I2C SDA, LCD segment 12 |
| Broche 33 | RB5/AN13/SCL/CCP3 — PORTB bit 5, analog input 13, I2C SCL, CCP3 |
| Broche 34 | RB6/PGC/ICSPCLK — PORTB bit 6, ICSP clock, programming/debug clock |
| Broche 35 | RB7/PGD/ICSPDAT — PORTB bit 7, ICSP data, programming/debug data |
| Broche 36 | RE0/AN5/SEG18 — PORTE bit 0, analog input 5, LCD segment 18 |
| Broche 37 | RE1/AN6/SEG19 — PORTE bit 1, analog input 6, LCD segment 19 |
| Broche 38 | RE2/AN7/SEG20 — PORTE bit 2, analog input 7, LCD segment 20 |
| Broche 39 | VDD — Positive supply voltage (second pin) |
| Broche 40 | Vss — Ground (second pin) |
Applications typiques
PIC16LF1937-E/P convient pour 6 applications: Industrial Control Panels with LCD Display, Battery-Powered Sensor Nodes, Automotive Body and Instrument Cluster Modules, Consumer White Goods and Appliance HMI, HVAC Thermostats and Zone Controllers, Medical Point-of-Care Devices.
Industrial Control Panels with LCD Display
The PIC16LF1937-E/P is a natural fit for industrial control panels that need a segmented character LCD because the silicon includes a hardware LCD driver supporting up to 96 segments with variable clock input and contrast control. Driving a 16x4 character LCD or 8-digit 7-segment display offloads the CPU, leaving MIPS available for Modbus RTU slave communication, keypad scanning, and temperature control loops. The 1.8 V to 3.6 V supply matches 3.3 V industrial rails, while the 36 I/O pins provide ample headroom for relay drivers, optocouplers, and rotary encoder inputs typical in HVAC and process control panels.
Recommandé
Battery-Powered Sensor Nodes
Battery-powered sensor nodes benefit from the PIC16LF1937-E/P's nanoWatt XLP technology, which delivers sleep currents below 1 µA in deep sleep and active currents under 1 mA at 1 MHz. The 14 KB Flash comfortably fits IoT sensor firmware with over-the-air update hooks, while the 10-bit ADC with up to 14 channels handles multi-sensor conditioning directly. A 3.6 V lithium primary cell can power the part for years at 0.1% duty cycle, and the integrated capacitive sensing (mTouch) lets designers replace mechanical buttons with sealed touch pads for outdoor enclosures.
Recommandé
Automotive Body and Instrument Cluster Modules
The PIC16LF1937-E/P carries automotive temperature grade -40 °C to +125 °C and qualification references per Microchip automotive packages, making it suitable for non-safety body control modules such as seat controllers, mirror adjusters, and small instrument clusters. The integrated LCD driver is valuable for cluster applications where a segmented display shows gear position, odometer, or warning icons. AEC-Q100 documentation should be requested from Microchip for full PPAP submission, and the 36 I/O count supports multiple LIN slave nodes, PWM outputs for backlight dimming, and switch inputs from the body harness.
Recommandé
Consumer White Goods and Appliance HMI
Consumer appliances (washing machines, refrigerators, microwaves, dishwashers) typically combine a segmented LCD with capacitive touch buttons and a few PWM-controlled loads - exactly the use case the PIC16LF1937-E/P targets. The 32 MHz CPU executes state machines fast enough to handle motor control supervisory loops in addition to the HMI, while the mTouch module replaces mechanical keypads with sealed touch sliders. The 40-pin PDIP through-hole package simplifies the manufacturing flow for high-volume white goods assembly lines that still prefer socketed or wave-soldered parts over SMT.
Recommandé
HVAC Thermostats and Zone Controllers
Smart thermostats and HVAC zone controllers rely on a segmented LCD for room temperature and setpoint display, which the PIC16LF1937-E/P drives in hardware while the CPU runs proportional control loops and Modbus or BACnet communication stacks. The wide -40 °C to +125 °C operating range covers attic-mounted equipment, and the 14 KB Flash fits a full thermostat firmware with scheduling and remote sensor support. The integrated 10-bit ADC reads thermistor bridges directly, eliminating external signal conditioning.
Recommandé
Medical Point-of-Care Devices
Low-cost medical point-of-care devices (glucometers, pulse oximeters, INR meters) benefit from the PIC16LF1937-E/P's combination of low power, integrated LCD driver, and reliable Flash with in-circuit programming. The mTouch module supports sealed front-panel buttons that are easy to disinfect - critical for clinical environments. The PIC16 family's long product lifecycle (15+ years) and Microchip's product change notification system also reduce regulatory re-qualification risk for medical device manufacturers, and the extended -40 °C to +125 °C grade supports outdoor screening and mobile clinic use cases.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16LF1937-E/P — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16F1937-E/P | PIC16LF1937-I/P | PIC16LF1937-E/SP | PIC16LF1936-I/P |
|---|---|---|---|---|---|
| Package | 40-pin PDIP | 40-pin PDIP | 40-pin PDIP | 28-pin SPDIP | 40-pin PDIP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Supply Voltage | 1.8 V to 3.6 V | 2.3 V to 5.5 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Program Memory | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash | 14 KB Flash |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 36 | 36 | 36 | 25 | 36 |
| LCD Segments | 96 | 96 | 96 | 64 | 96 |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +85 °C | -40 °C to +125 °C | -40 °C to +85 °C |
| Capacitive Sensing (mTouch) | Yes | Yes | Yes | Yes | No |
Principaux différenciateurs
- Low-voltage nanoWatt XLP variant for battery designs (vs PIC16F1937-E/P)
- Higher temperature grade for harsh environments (vs PIC16LF1937-I/P)
- Full 40-pin PDIP with all 96 LCD segments (vs PIC16LF1937-E/SP)
Notes de conception
PIC16LF1937-E/P supply voltage is 1.8 V to 3.6 V - any 5 V source will damage the part. For 5 V designs use PIC16F1937-E/P (2.3 V to 5.5 V) which is pin-compatible. Place a 100 nF decoupling capacitor as close as possible to each Vdd/Vss pin pair (pin 27/26 and pin 39/40 are the two pairs on the 40-pin PDIP). Add a bulk 10 µF tantalum or ceramic at the regulator output for ADC noise suppression.
Route the ICSP clock (RB6/PGC) and data (RB7/PGD) signals to a 6-pin or 3-pin header for in-circuit programming and debugging. Keep the trace lengths short and avoid routing them next to switching signals (PWM outputs, relay coils). The MCLR pin (RE3, pin 9) should have a 10 kΩ pull-up to Vdd and a 100 nF cap to ground to provide a clean reset; this is mandatory for reliable operation per Microchip application note TB087.
Do not use PIC16LF1937-E/P on a 5 V rail - the absolute maximum Vdd is 4.0 V per the datasheet and exceeding it will damage the Flash. Do not enable weak pull-ups on pins used as analog inputs (RA0-RA5, RB0-RB5, RE0-RE2) because the pull-up current will inject offset into ADC readings; disable them via the WPUEN register. When migrating from PIC16F1937 to PIC16LF1937, verify that the operating frequency does not exceed 16 MHz below 3.0 V supply.
PIC16LF1937-E/P in 40-pin PDIP has thermal resistance theta_JA of approximately 50 °C/W which is adequate for industrial temperature operation since the typical application draws under 10 mA. No heatsink is required. However, when driving high-current LED loads from the I/O pins (each pin can sink/source 25 mA, 125 mA per port), verify that the total dissipation P = Vdd x Icc + sum(Vpin_high x Iload) stays within the 1 W PDIP package limit.
Informations de conformité
AEC-Q100 references per Microchip qualification package per third-party distributor datasheet. Lead-free and halogen-free per Microchip product labeling. RoHS compliance verified per Microchip product page.
