PIC16LF1937T-I/PT - 14KB Flash 8-bit MCU 44-TQFP | Microchip
N.º da peça: PIC16LF1937T-I/PT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.84 | $2,84 |
| 10 | $2.55 | $25,50 |
| 100 | $2.27 | $227,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.84 | $1.840,00 |
PIC16LF1937T-I/PT Visão geral
What is a PIC16 microcontroller? PIC16 is Microchip's family of 8-bit RISC microcontrollers using a Harvard architecture with separate program and data buses; nanoWatt XLP technology extends sleep current down to the tens of nanoamps, making the family a standard choice for battery-powered and always-on embedded designs. Within the broader taxonomy, the PIC16LF1937 sits at: 8-bit MCU -> PIC16 family -> PIC16F193x sub-family -> PIC16LF1937 (low-voltage 'LF' variant) -> Microchip 8-bit microcontrollers -> Microcontroller IC -> Embedded semiconductor.
Key features include an integrated LCD driver supporting up to 96 segments, a 16-channel 10-bit ADC, multiple Enhanced USART, MSSP (SPI/I2C) and CCP/ECCP peripherals, 36 digital I/O pins, and four 8-bit timers plus two CCP modules. The device also provides two comparators and a capacitive touch Charge Time Measurement Unit (CTMU) for sensor interfaces, with active-low MCLR and flexible oscillator options including 32 kHz internal LF oscillator.
Architecture-wise, the LF1937 executes most instructions in one instruction cycle and supports interrupt prioritization with hardware context save. The 14-bit instruction word enables a compact code footprint while the dual-bank flash allows in-application self-reprogramming for bootloader-style field updates.
Typical applications include battery-powered consumer appliances with LCD user interfaces, low-energy sensor hubs, white-goods control panels, portable medical monitors, and industrial HMI modules where the on-chip LCD driver eliminates a separate display controller. The wide voltage range and XLP sleep modes also suit remote controls, utility metering peripherals, and always-on IoT edge nodes.
When designing with this part, plan the PCB layout so that the TQFP-44 thermal pad is properly soldered to a copper pour, and respect the recommended decoupling capacitor placement near VDD/AVDD pins to keep ADC noise low. Programming is supported by Microchip's MPLAB X IDE and the XC8 compiler, with debug via ICD 3 or PICkit 4.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para PIC16LF1937T-I/PT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com PIC16LF1937T-I/PT (mesmo formato e footprint) — diferindo em Package, Timers, ADC, I/O Pins, LCD Driver.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
PIC16LF1937-I/PT
✅ Drop-In✓ Em estoque
$2.21 / unidade
Ver ficha técnica →PIC16LF1937T-I/MV
✅ Drop-In✓ Em estoque
$1.69 / unidade
Ver ficha técnica →PIC16F1937-I/PT
✅ Drop-In✓ Em estoque
$3.1 / unidade
Ver ficha técnica →PIC16LF1937-E/PT
✅ Drop-In✓ Em estoque
$2.68 / unidade
Ver ficha técnica →PIC16LF1937-E/P
✅ Drop-In✓ Em estoque
$2.15 / unidade
Ver ficha técnica →PIC16LF1936T-I/PT
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
PIC16LF1937T-I/PT Classificações máximas e características elétricas
| Core Architecture | PIC16 enhanced mid-range 8-bit |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| Data SRAM | 512 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| Digital I/O Pins | 36 |
| ADC | 10-bit, up to 14 channels |
| LCD Driver Segments | Up to 96 segments |
| Timers | 4 x 8-bit, 1 x 16-bit (per datasheet family) |
| Communication Peripherals | EUSART, MSSP (SPI/I2C) |
| CCP / ECCP Modules | 2 CCP, 1 ECCP |
| Comparators | 2 |
| Encapsulamento | 44-pin TQFP (10x10 mm), TQFP-44 |
| Tipo de montagem | Surface Mount |
| Temperatura de operação | -40C to +85C (industrial) |
| Low-Power Technology | nanoWatt XLP |
| Status RoHS | Compliant |
Configuração de pinos do PIC16LF1937T-I/PT
| Pino 1 | MCLR/Vpp/RE3 — Master clear (active low) or programming voltage input |
| Pino 2 | RA0 — Digital I/O / AN0 / SEG12 |
| Pino 3 | RA1 — Digital I/O / AN1 / SEG7 |
| Pino 4 | RA2 — Digital I/O / AN2 / VREF-/SEG6 |
| Pino 5 | RA3 — Digital I/O / AN3 / VREF+/SEG5 |
| Pino 6 | RA4 — Digital I/O / T0CKI / SEG4 |
| Pino 7 | RA5 — Digital I/O / AN4 / SEG3 |
| Pino 8 | RA6 — Digital I/O / OSC2 / CLKOUT |
| Pino 9 | RA7 — Digital I/O / OSC1 / CLKIN |
| Pino 10 | RE0 — Digital I/O / AN5 / LCDBIAS3 |
| Pino 11 | RE1 — Digital I/O / AN6 / LCDBIAS2 |
| Pino 12 | RE2 — Digital I/O / AN7 / LCDBIAS1 |
| Pino 13 | VDD — Positive supply voltage |
| Pino 14 | VSS — Ground reference |
| Pino 15 | RB0 — Digital I/O / INT0 / SEG0 |
| Pino 16 | RB1 — Digital I/O / INT1 / SEG1 |
| Pino 17 | RB2 — Digital I/O / INT2 / SEG2 |
| Pino 18 | RB3 — Digital I/O / CCP2 / SEG15 |
| Pino 19 | RB4 — Digital I/O / SEG14 |
| Pino 20 | RB5 — Digital I/O / SEG13 |
| Pino 21 | RB6 — Digital I/O / ICSPCLK / SEG10 |
| Pino 22 | RB7 — Digital I/O / ICSPDAT / SEG11 |
| Pino 23 | RC0 — Digital I/O / SOSCO / SEG30 |
| Pino 24 | RC1 — Digital I/O / SOSCI / SEG29 |
| Pino 25 | RC2 — Digital I/O / CCP1 / SEG28 |
| Pino 26 | RC3 — Digital I/O / SCL / SEG27 |
| Pino 27 | RC4 — Digital I/O / SDA / SEG26 |
| Pino 28 | RC5 — Digital I/O / SDO / SEG25 |
| Pino 29 | RC6 — Digital I/O / TX/CK / SEG24 |
| Pino 30 | RC7 — Digital I/O / RX/DT / SEG23 |
| Pino 31 | RD0 — Digital I/O / COM3 / SEG31 |
| Pino 32 | RD1 — Digital I/O / COM2 |
| Pino 33 | RD2 — Digital I/O / COM1 |
| Pino 34 | RD3 — Digital I/O / COM0 |
| Pino 35 | RD4 — Digital I/O / SEG20 |
| Pino 36 | RD5 — Digital I/O / SEG21 |
| Pino 37 | RD6 — Digital I/O / SEG22 |
| Pino 38 | RD7 — Digital I/O / SEG19 |
| Pino 39 | RE0 — Digital I/O / LCDBIAS0 |
| Pino 40 | RE1 — Digital I/O / LCDBIAS1 |
| Pino 41 | RE2 — Digital I/O / LCDBIAS2 |
| Pino 42 | AVDD — Analog positive supply |
| Pino 43 | AVSS — Analog ground |
| Pino 44 | NC — Not connected (per datasheet TQFP-44 layout) |
Aplicações típicas
PIC16LF1937T-I/PT é adequado para 6 aplicaçãos: Battery-Powered LCD Appliance HMI, Always-On IoT Sensor Edge Node, Industrial HMI Control Panel, Portable Medical Monitoring Device, Smart Meter and Utility Display, Consumer Remote Control and Key Fob.
Battery-Powered LCD Appliance HMI
The PIC16LF1937T-I/PT is ideal for white-goods HMI panels (washing machines, microwave ovens, coffee makers) because it integrates a 96-segment LCD driver that eliminates an external display controller, lowering BOM cost and PCB area. The 1.8 V to 5.5 V operating range supports direct connection to 2xAA alkaline, 2xAAA NiMH, or single-cell Li-ion battery stacks without a boost regulator. nanoWatt XLP deep-sleep current near 50 nA typical allows standby power consumption well below 1 uA, extending battery life for cordless appliances. The 14 KB flash and 512 B SRAM comfortably fit segmented UI firmware, button debounce state machines, and timer logic for typical consumer appliances.
Recomendado
Always-On IoT Sensor Edge Node
For battery-powered IoT edge nodes such as wireless temperature/humidity loggers and occupancy sensors, the PIC16LF1937T-I/PT offers nanoWatt XLP technology with sleep currents in the tens of nanoamps, allowing multi-year battery life on a single CR2032 cell. The 10-bit ADC with up to 14 channels handles multiple analog sensors (temperature, light, gas) without an external multiplexer, while the integrated MSSP supports SPI/I2C sensors and the EUSART interfaces to wireless modules. The 36 digital I/O pins also allow direct connection to multiple pushbuttons, LEDs, or capacitive-touch sensors via the on-chip CTMU peripheral.
Recomendado
Industrial HMI Control Panel
Industrial control panels for HVAC, building automation, and small machine controllers benefit from the PIC16LF1937T-I/PT integrated LCD driver and broad peripheral set. The 32 MHz core provides ample headroom for Modbus RTU slave stacks over EUSART, while the 14 KB flash stores configuration tables, calibration constants, and menu handling. The 1.8 V to 5.5 V operating range tolerates industrial 24 V systems via a small linear regulator, and the -40C to +85C industrial temperature grade handles factory-floor thermal stress. The 36 digital I/O pins interface directly to relay drivers, optocouplers, and keypads without external logic.
Recomendado
Portable Medical Monitoring Device
Portable medical devices such as pill reminders, handheld glucose meter interfaces, and patient-worn pulse monitors use the PIC16LF1937T-I/PT for its low-power operation and integrated LCD capability. The 10-bit ADC with internal voltage reference delivers accurate battery-voltage monitoring critical for medical device low-battery warnings, while the 1.8 V minimum supply enables direct operation from single 1.5 V alkaline or 3 V coin-cell batteries. The 14 KB flash accommodates FDA-traceable firmware revision tagging and simple alarm logic, and the nanoWatt XLP modes keep average current below 10 uA in duty-cycled measurement applications.
Recomendado
Smart Meter and Utility Display
Electricity, water, and gas meters with segmented LCD user interfaces benefit from the PIC16LF1937T-I/PT integrated 96-segment LCD driver and EEPROM data memory. The 256 B EEPROM supports tamper-resistant storage of meter calibration coefficients and rolling consumption totals without external memory, while the 10-bit ADC reads metrology front-ends or hall-effect flow sensors directly. The wide 1.8 V to 5.5 V supply range handles battery-backed RTC operation, and the on-chip CTMU enables capacitive touch buttons for meter reset and display cycling in harsh utility environments.
Recomendado
Consumer Remote Control and Key Fob
Battery-powered remote controls for TVs, smart-home hubs, and automotive key fobs leverage the PIC16LF1937T-I/PT nanoWatt XLP sleep modes for years of standby life on a single coin cell. The 32 MHz core executes IR or RF encoding routines in microseconds before returning to deep sleep, while the CTMU and ADC handle capacitive touch keys and battery monitoring. The 36 I/O pins support 4x4 keypads, multiple LEDs, and a UART/I2C link to companion transceivers, all from one tiny TQFP-44 IC at a price point suited to high-volume consumer products.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PIC16LF1937T-I/PT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | PIC16LF1937-I/PT | PIC16LF1937T-I/MV | PIC16F1937-I/PT | PIC16LF1937-E/PT | PIC16LF1936T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-44 (10x10 mm) | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same | TQFP-44 (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB |
| SRAM | 512 B | 512 B | 512 B | 512 B | 512 B | 512 B |
| EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B | 256 B |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Max CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| XLP Deep-Sleep Current (typ) | approximately 50 nA | approximately 50 nA | approximately 50 nA | approximately 100 nA | approximately 50 nA | approximately 50 nA |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C |
| Delivery Format | Tape & Reel | Tray | Tape & Reel | Tray | Tray | Tape & Reel |
Principais diferenciais
- On-chip 96-segment LCD driver eliminates external controller (vs PIC16LF1903T-I/SO)
- Lower deep-sleep current for longer battery life (vs PIC16F1937-I/PT)
- Largest flash in PIC16LF193x family (vs PIC16LF1936T-I/PT)
Notas de projeto
Place a 0.1 uF ceramic decoupling capacitor as close as possible to each VDD/VSS pin pair, with an additional 1 uF bulk capacitor on the AVDD/AVSS analog supply pins. The PIC16LF1937T-I/PT internal voltage regulator powers the core from VDD; large transient loads on digital I/O can couple into AVDD and degrade ADC readings. A ferrite bead between VDD and AVDD is recommended for noise-sensitive analog measurements above 10-bit precision.
Estimated: at 32 MHz operation with 5.5 V supply and full I/O toggle, the LF1937T-I/PT consumes about 5-6 mA active, dissipating roughly 27-33 mW. The TQFP-44 (10x10 mm) has a typical theta_JA around 50-60 C/W, giving a junction-temperature rise below 2 C - well within the -40C to +85C industrial range. No heatsink is required; however, designers should still flood the ground pad with a copper pour to keep thermal resistance low for hot-spot reliability over extended temperature operation.
The 44-pin TQFP uses 0.8 mm pitch leads; minimum trace width and clearance should follow IPC-7351 nominal land pattern recommendations to avoid solder bridging. Place a ground plane on the layer directly beneath the TQFP-44 to reduce EMI and provide a low-impedance return path for high-speed signals. Keep the 32 MHz crystal or external oscillator traces short (<5 mm) and surrounded by ground pour to maintain oscillator stability.
Do not leave the MCLR pin floating; tie it to VDD through a 10 kohm resistor and add a 100 nF cap to ground for production noise immunity. When programming in-circuit via ICSP, isolate the MCLR/ICSPDAT/ICSPCLK lines from any application circuitry that could load them - a series 4.7 kohm resistor on each ICSP line prevents programming contention. Also remember that the LF suffix indicates low-voltage operation; if you need extended temperature above +85C, choose the E-suffix variant (e.g. PIC16LF1937-E/PT).
Informações de conformidade
RoHS and REACH compliance confirmed via Microchip product page and distributor listings. Halogen-free status not explicitly stated in available web data. Not AEC-Q100 qualified; for automotive applications consult Microchip's automotive-grade PIC MCU portfolio.
