PIC16F1937-E/P - 8-bit MCU 14KB Flash LCD 40-Pin DIP | Microchip
MPN: PIC16F1937-E/P ✓ Hoạt độngPIC16F1937-E/P Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile data memory (RAM), non-volatile user storage (EEPROM), and a rich set of peripherals onto one die. The PIC16F1937 belongs to Microchip's enhanced mid-range PIC16 family and is positioned within the broader taxonomy: microcontroller -> 8-bit MCU -> flash MCU -> PIC16 family -> PIC16F193x sub-family. It uses a 14-bit instruction set and Harvard architecture with separate code and data buses, distinguishing it from von-Neumann 8-bit architectures used by some legacy designs.
Key features include nanoWatt XLP extreme-low-power technology (typical sleep current of tens of nA), an on-chip LCD driver capable of driving up to 116 segments, a 10-bit ADC with up to 14 channels, two 8-bit and one 16-bit timers, enhanced PWM modules, an MSSP/SPI/I2C module, an enhanced USART, and a 25-pin I/O capability. The wide operating voltage and low-power modes make it suitable for battery-powered consumer, industrial, and automotive-grade applications.
Architecturally, the PIC16F1937 leverages the enhanced mid-range core with hardware multiplier, a 32 kHz internal oscillator selectable via software, and a wide variety of oscillator options (HFINTOSC, LFINTOSC, EC, XT, HS, LP, RC). Code protection, low-voltage programming via ICSP, and an in-circuit debugger (ICD) interface provide flexible development workflows.
Typical applications include direct LCD-displayed low-power consumer devices (thermostats, blood pressure monitors, glucometers, electric meters, remote controls, and small appliances), industrial sensor front-ends with integrated glass LCD, automotive instrument clusters and HVAC control panels, white-goods and home appliance HMIs, and battery-powered IoT sensor nodes requiring extended sleep current performance.
When designing with this part, verify the segmented LCD driving requirements (resistors, bias, multiplex duty) against the application's segment count; the LCD charge pump regulator pins must be configured per the datasheet. For automotive applications choose the -I industrial or -E extended grade, where -E spans -40C to +125C. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1937-E/P — 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 PIC16F1937-E/P (cùng hình factor và footprint) — khác nhau ở Timers, ADC, Package, RoHS Status, I/O Pins.
PIC16F1937-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1936-I/P
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1934-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1936-E/P
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1934-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1937-E/P Tỷ lệ tối đa & tính chất điện
| Program Memory (Flash) | 14 KB |
| Data SRAM | 512 B |
| Data EEPROM | 256 B |
| CPU Architecture | 8-bit Enhanced Mid-Range (14-bit instruction) |
| Maximum Clock Speed | 32 MHz |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Pins | 25 |
| Hộp | 40-pin PDIP (P) |
| Kiểu lắp đặt | Through-Hole (DIP) |
| Nhiệt độ hoạt động | -40C to +125C (Extended, "-E") |
| ADC | 10-bit, up to 14 channels |
| Timers | 2x 8-bit, 1x 16-bit |
| LCD Driver | Yes, integrated (up to 116 segments) |
| Communication | MSSP/SPI/I2C, Enhanced USART |
| Low-Power Tech | nanoWatt XLP |
| ICSP / ICD | Yes (In-Circuit Serial Programming / Debug) |
| Trạng thái RoHS | Compliant (Lead-Free, "P" suffix) |
Cấu hình chân PIC16F1937-E/P
| Chân 1 | MCLR/VPP/RE3 — Master Clear (reset) / programming voltage / digital I/O RE3 |
| Chân 2 | RA0 — Digital I/O / analog input AN0 / SEG12 |
| Chân 3 | RA1 — Digital I/O / analog input AN1 / SEG7 |
| Chân 4 | RA2 — Digital I/O / analog AN2 / VREF- / COM2 |
| Chân 5 | RA3 — Digital I/O / analog AN3 / VREF+ / COM3 / SEG15 |
| Chân 6 | RA4 — Digital I/O / T0CKI / SEG4 |
| Chân 7 | RA5 — Digital I/O / analog AN4 / SEG5 |
| Chân 8 | RA6 — Digital I/O / oscillator output |
| Chân 9 | RA7 — Digital I/O / oscillator input |
| Chân 10 | VSS — Ground reference |
| Chân 11 | VDD — Positive supply (1.8V-5.5V) |
| Chân 12 | RB0 — Digital I/O / INT / SEG0 |
| Chân 13 | RB1 — Digital I/O / SEG1 |
| Chân 14 | RB2 — Digital I/O / SEG2 |
| Chân 15 | RB3 — Digital I/O / SEG3 |
| Chân 16 | RB4 — Digital I/O / SEG6 |
| Chân 17 | RB5 — Digital I/O / SEG11 |
| Chân 18 | RB6 — Digital I/O / ICSPCLK / SEG13 |
| Chân 19 | RB7 — Digital I/O / ICSPDAT / SEG14 |
| Chân 20 | VSS — Ground reference |
| Chân 21 | VDD — Positive supply |
| Chân 22 | RC0 — Digital I/O / SOSCO |
| Chân 23 | RC1 — Digital I/O / SOSCI |
| Chân 24 | RC2 — Digital I/O / CCP1 |
| Chân 25 | RC3 — Digital I/O / SCL / SCK |
| Chân 26 | RC4 — Digital I/O / SDA / SDI |
| Chân 27 | RC5 — Digital I/O / SDO |
| Chân 28 | RC6 — Digital I/O / TX/CK |
| Chân 29 | RC7 — Digital I/O / RX/DT |
| Chân 30 | RD0 — Digital I/O / COM0 |
| Chân 31 | RD1 — Digital I/O / COM1 |
| Chân 32 | RD2 — Digital I/O / PSP2 |
| Chân 33 | RD3 — Digital I/O / PSP3 |
| Chân 34 | RD4 — Digital I/O / PSP4 / SEG20 |
| Chân 35 | RD5 — Digital I/O / PSP5 / SEG21 |
| Chân 36 | RD6 — Digital I/O / PSP6 / SEG22 |
| Chân 37 | RD7 — Digital I/O / PSP7 / SEG23 |
| Chân 38 | VSS — Ground reference |
| Chân 39 | RE0 — Digital I/O / AN5 / LCDBIAS0 |
| Chân 40 | RE1 — Digital I/O / AN6 / LCDBIAS1 |
Ứng dụng tiêu biểu
PIC16F1937-E/P phù hợp cho 6 Áp dụngs: Battery-Powered Thermostat with Glass LCD, Industrial Sensor Front-End with Integrated HMI, Automotive Instrument Cluster / HVAC Panel, Blood Pressure Monitor / Glucose Meter, White-Goods and Home Appliance HMI, Electric Meter / Smart Energy Display.
Battery-Powered Thermostat with Glass LCD
The PIC16F1937-E/P's integrated LCD segment driver (up to 116 segments) and nanoWatt XLP technology deliver a single-chip solution for battery-powered thermostats. The PIC16F1937's 1.8V to 5.5V supply range accommodates two AA alkaline cells, and its sub-uA sleep current extends coin-cell life for years. Per the PIC16F1937 datasheet, the on-chip charge pump regulator and bias generator directly drive 1/3 multiplex LCD glass without external components. Place the part at the center of the PCB with short traces to the LCD connector to minimize segment cross-talk.
Được đề xuất
Industrial Sensor Front-End with Integrated HMI
The PIC16F1937-E/P's 14-bit PWM, 10-bit ADC, and 25 I/O pins make it well suited for industrial sensor front-ends that also display measurements on a glass-LCD HMI. Per the PIC16F1937 datasheet, the 32 MHz HFINTOSC provides deterministic ADC sampling up to ~100 ksps, while the MSSP/SPI/I2C bus interfaces external digital sensors. Its -40C to +125C extended temperature grade handles factory-floor enclosures near motors or heaters. Estimated: at 32 MHz clock, 3.3V supply, and active ADC mode, power consumption is roughly 5-6 mA.
Được đề xuất
Automotive Instrument Cluster / HVAC Panel
Automotive HVAC panels and instrument clusters benefit from the PIC16F1937-E/P's -40C to +125C extended temperature grade, integrated LCD driver, and 14 KB Flash for OEM feature code. Per the PIC16F1937 datasheet, the ECAN-ready enhanced USART, MSSP, and PWM modules interface climate sensors and stepper-motor actuators for blend-door control. Use the MSSP in SPI mode to drive an external stepper predriver; the internal timers handle background HVAC scheduling. Designed alongside automotive-grade companion ICs for reliable cabin-temperature operation.
Được đề xuất
Blood Pressure Monitor / Glucose Meter
Medical home-care devices such as blood pressure monitors and blood-glucose meters rely on the PIC16F1937-E/P's combination of nanoWatt XLP sleep current, 10-bit ADC for sensor signal conditioning, and LCD segment driver for direct glass-display readout. Per the PIC16F1937 datasheet, idle current can drop below 1 uA in sleep with RTC, enabling multi-year battery life on two AA cells. Use the on-chip op-amp option to amplify the bridge pressure-sensor signal before ADC sampling.
Được đề xuất
White-Goods and Home Appliance HMI
Washing machines, dishwashers, and microwave ovens use the PIC16F1937-E/P to drive glass-LCD HMIs, scan keypads via the 25 I/O pins, and time motor-control events via the 16-bit timer. Per the PIC16F1937 datasheet, the wide 1.8V-5.5V supply simplifies direct regulation from rectified mains or 5V SMPS rails. Estimated: at 32 MHz and 5V, the device consumes approximately 8 mA; add a heatsink only if the MCU is co-located with power-FET dissipation.
Được đề xuất
Electric Meter / Smart Energy Display
Single-phase electric meters and smart-energy displays benefit from the PIC16F1937-E/P's LCD driver and extended temperature range for utility-cabinet deployment. Per the PIC16F1937 datasheet, the enhanced USART connects to a PLC or wireless M-Bus module for AMI backhaul, while the 14 KB Flash stores tariff tables, calibration constants, and segmented LCD glyphs. The 32 kHz LFINTOSC plus RTC enable accurate time-of-use billing with minimal external components.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1937-E/P — 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 | PIC16F1937-I/P | PIC16F1936-I/P | PIC16F1934-I/P |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 40-pin PDIP (P) | 40-pin PDIP (P) | 40-pin PDIP (P) | 40-pin PDIP (P) |
| Program Flash | 14 KB | 14 KB | 8 KB | 7 KB |
| Data SRAM | 512 B | 512 B | 512 B | 256 B |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B |
| Max Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| 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 |
| Temperature Grade | -40C to +125C (Extended "-E") | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| LCD Driver | Yes (up to 116 segments) | Yes (up to 116 segments) | Yes (up to 116 segments) | Yes (up to 96 segments) |
Bảo phân biệt quan trọng
- 14 KB Flash / 512 B RAM largest in PIC16F193x 40-pin PDIP family (vsPIC16F1936-I/P)
- Extended -40C to +125C automotive temperature grade (vsPIC16F1937-I/P)
- Up to 116-segment integrated LCD driver (vsPIC16F1934-I/P)
Ghi chú thiết kế
Estimated: At 32 MHz, 5V VDD, the PIC16F1937-E/P core draws approximately 6-8 mA active; switching to the 32 kHz LFINTOSC + sleep mode drops quiescent current below 1.9 uA typical (per datasheet nanoWatt XLP figures). For battery-powered designs, gate peripheral clocks via PMD registers and use Sleep + WDT for wakes; route the LCD charge-pump regulator to enter low-bias mode during sleep to minimize segment-driver leakage.
Place a 100 nF decoupling capacitor on each VDD/VSS pair within 5 mm of the IC pins, plus a single 10 uF bulk capacitor near the package. Keep the crystal (if used) within 10 mm of OSC1/OSC2 with a grounded copper guard ring to reduce EMI coupling. For LCD segment traces, route them away from switching traces and bypass each segment line with a small capacitor if the display is more than 50 mm away.
Do not leave the MCLR pin floating - tie it to VDD via a 10 kohm pull-up and a 100 nF cap to ground for noise immunity, otherwise spurious resets occur near high-dV/dt signals. When configuring the LCD module, verify the bias resistor ladder matches the chosen multiplex duty (static, 1/2, 1/3, 1/4); incorrect bias yields dim or ghosted segments. Always configure unused I/O pins as outputs driven low to minimize supply current.
Thông tin tuân thủ
RoHS compliant per Microchip product page ("P" suffix = lead-free 40-pin PDIP). -E extended temperature grade -40C to +125C is automotive-style qualification but not formally AEC-Q100 listed in the family datasheet; verify automotive program requirements separately.
