PIC16LF1937-I/MV - 14KB Flash 8-bit MCU w/ LCD Driver | Microchip
MPN: PIC16LF1937-I/MV ✓ Hoạt độngPIC16LF1937-I/MV Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC16LF1937-I/MV — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16LF1937-I/MV (cùng hình factor và footprint) — khác nhau ở ADC, LCD Driver, Timers, Package, Operating Temperature.
PIC16LF1936-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1934-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1937-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1937-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LF1937-I/MV Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | TQFP-44 (MV) 10x10 mm |
| Kiểu lắp đặt | 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 |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Low-Power Mode | nanoWatt XLP technology |
| Trạng thái RoHS | Compliant (lead-free) |
Cấu hình chân PIC16LF1937-I/MV
| Chân 1 | SEG15/COM7/RA0 — LCD segment / GPIO |
| Chân 2 | SEG16/COM6/RA1 — LCD segment / GPIO |
| Chân 3 | RA2 — GPIO |
| Chân 4 | RA3 — GPIO |
| Chân 5 | RA4 — GPIO |
| Chân 6 | RA5 — GPIO |
| Chân 7 | RA6 — GPIO |
| Chân 8 | RA7 — GPIO |
| Chân 9 | VSS — Ground |
| Chân 10 | VDD — Positive supply |
| Chân 11 | RB0 — GPIO / interrupt |
| Chân 12 | RB1 — GPIO / interrupt |
| Chân 13 | RB2 — GPIO / interrupt |
| Chân 14 | RB3 — GPIO / interrupt |
| Chân 15 | RB4 — GPIO / interrupt |
| Chân 16 | RB5 — GPIO / interrupt |
| Chân 17 | RB6 — PGC / GPIO / interrupt |
| Chân 18 | RB7 — PGD / GPIO / interrupt |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RC0 — GPIO |
| Chân 22 | RC1 — GPIO |
| Chân 23 | RC2 — GPIO |
| Chân 24 | RC3 — GPIO / SCL |
| Chân 25 | RC4 — GPIO / SDA |
| Chân 26 | RC5 — GPIO |
| Chân 27 | RC6 — GPIO / TX |
| Chân 28 | RC7 — GPIO / RX |
| Chân 29 | RD0 — GPIO |
| Chân 30 | RD1 — GPIO |
| Chân 31 | RD2 — GPIO |
| Chân 32 | RD3 — GPIO |
| Chân 33 | RD4 — GPIO |
| Chân 34 | RD5 — GPIO |
| Chân 35 | RD6 — GPIO |
| Chân 36 | RD7 — GPIO |
| Chân 37 | RE0 — GPIO |
| Chân 38 | RE1 — GPIO |
| Chân 39 | RE2 — GPIO |
| Chân 40 | RE3 — GPIO / MCLR |
| Chân 41 | VSS — Ground |
| Chân 42 | VDD — Positive supply |
| Chân 43 | LCDBIAS3 — LCD bias |
| Chân 44 | VLCD1 — LCD voltage |
Ứng dụng tiêu biểu
PIC16LF1937-I/MV phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LF1937-I/MV — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Highest Flash density in the PIC16LF193x /MV family (vsPIC16LF1936-I/MV)
- Low-voltage variant ideal for battery designs (vsPIC16F1937-I/MV)
- Integrated LCD charge pump eliminates external boost (vsPIC16LF18424-I/SL)
Ghi chú thiết kế
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.
Thông tin tuân thủ
Lead-free / RoHS-compliant per Microchip product page; not AEC-Q100 qualified (industrial grade only). Conflict minerals statement available on Microchip website.
