PIC16LF1937T-I/PT - 14KB Flash 8-bit MCU 44-TQFP | Microchip
料号： PIC16LF1937T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 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 概述
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.
直接替换替代料： PIC16LF1937T-I/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16LF1937T-I/PT （相同外形与封装尺寸） ——差异在于 Package, Timers, ADC, I/O Pins, LCD Driver.
快速对比工具——选择替代料号进行并排对比：
PIC16LF1937-I/PT
✅ 直接替换✓ 有现货
$2.21 / 个
查看数据手册 →PIC16LF1937T-I/MV
✅ 直接替换✓ 有现货
$1.69 / 个
查看数据手册 →PIC16F1937-I/PT
✅ 直接替换✓ 有现货
$3.1 / 个
查看数据手册 →PIC16LF1937-E/PT
✅ 直接替换✓ 有现货
$2.68 / 个
查看数据手册 →PIC16LF1937-E/P
✅ 直接替换✓ 有现货
$2.15 / 个
查看数据手册 →PIC16LF1936T-I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LF1937T-I/PT 最大额定值与电气特性
| 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 |
| 封装 | 44-pin TQFP (10x10 mm), TQFP-44 |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (industrial) |
| Low-Power Technology | nanoWatt XLP |
| RoHS 状态 | Compliant |
PIC16LF1937T-I/PT 引脚配置
| 引脚 1 | MCLR/Vpp/RE3 — Master clear (active low) or programming voltage input |
| 引脚 2 | RA0 — Digital I/O / AN0 / SEG12 |
| 引脚 3 | RA1 — Digital I/O / AN1 / SEG7 |
| 引脚 4 | RA2 — Digital I/O / AN2 / VREF-/SEG6 |
| 引脚 5 | RA3 — Digital I/O / AN3 / VREF+/SEG5 |
| 引脚 6 | RA4 — Digital I/O / T0CKI / SEG4 |
| 引脚 7 | RA5 — Digital I/O / AN4 / SEG3 |
| 引脚 8 | RA6 — Digital I/O / OSC2 / CLKOUT |
| 引脚 9 | RA7 — Digital I/O / OSC1 / CLKIN |
| 引脚 10 | RE0 — Digital I/O / AN5 / LCDBIAS3 |
| 引脚 11 | RE1 — Digital I/O / AN6 / LCDBIAS2 |
| 引脚 12 | RE2 — Digital I/O / AN7 / LCDBIAS1 |
| 引脚 13 | VDD — Positive supply voltage |
| 引脚 14 | VSS — Ground reference |
| 引脚 15 | RB0 — Digital I/O / INT0 / SEG0 |
| 引脚 16 | RB1 — Digital I/O / INT1 / SEG1 |
| 引脚 17 | RB2 — Digital I/O / INT2 / SEG2 |
| 引脚 18 | RB3 — Digital I/O / CCP2 / SEG15 |
| 引脚 19 | RB4 — Digital I/O / SEG14 |
| 引脚 20 | RB5 — Digital I/O / SEG13 |
| 引脚 21 | RB6 — Digital I/O / ICSPCLK / SEG10 |
| 引脚 22 | RB7 — Digital I/O / ICSPDAT / SEG11 |
| 引脚 23 | RC0 — Digital I/O / SOSCO / SEG30 |
| 引脚 24 | RC1 — Digital I/O / SOSCI / SEG29 |
| 引脚 25 | RC2 — Digital I/O / CCP1 / SEG28 |
| 引脚 26 | RC3 — Digital I/O / SCL / SEG27 |
| 引脚 27 | RC4 — Digital I/O / SDA / SEG26 |
| 引脚 28 | RC5 — Digital I/O / SDO / SEG25 |
| 引脚 29 | RC6 — Digital I/O / TX/CK / SEG24 |
| 引脚 30 | RC7 — Digital I/O / RX/DT / SEG23 |
| 引脚 31 | RD0 — Digital I/O / COM3 / SEG31 |
| 引脚 32 | RD1 — Digital I/O / COM2 |
| 引脚 33 | RD2 — Digital I/O / COM1 |
| 引脚 34 | RD3 — Digital I/O / COM0 |
| 引脚 35 | RD4 — Digital I/O / SEG20 |
| 引脚 36 | RD5 — Digital I/O / SEG21 |
| 引脚 37 | RD6 — Digital I/O / SEG22 |
| 引脚 38 | RD7 — Digital I/O / SEG19 |
| 引脚 39 | RE0 — Digital I/O / LCDBIAS0 |
| 引脚 40 | RE1 — Digital I/O / LCDBIAS1 |
| 引脚 41 | RE2 — Digital I/O / LCDBIAS2 |
| 引脚 42 | AVDD — Analog positive supply |
| 引脚 43 | AVSS — Analog ground |
| 引脚 44 | NC — Not connected (per datasheet TQFP-44 layout) |
典型应用
PIC16LF1937T-I/PT 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC16LF1937T-I/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- On-chip 96-segment LCD driver eliminates external controller （对比 PIC16LF1903T-I/SO)
- Lower deep-sleep current for longer battery life （对比 PIC16F1937-I/PT)
- Largest flash in PIC16LF193x family （对比 PIC16LF1936T-I/PT)
设计说明
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).
合规信息
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.
