PIC16F1939T-I/PT - 8-Bit XLP MCU 32MHz 28KB Flash 44-TQFP | Microchip
MPN: PIC16F1939T-I/PT ✓ פעילPIC16F1939T-I/PT סקירה
An 8-bit PIC microcontroller (MCU) is a single-chip computer based on Microchip's RISC-based PIC architecture, integrating CPU, Flash program memory, SRAM, EEPROM, peripherals (ADC, timers, PWM, communication interfaces), and I/O pins on a single CMOS die. Within the broader hierarchy, the PIC16F1939 belongs to the PIC16F family -> PIC microcontroller -> 8-bit MCU -> microcontroller -> embedded controller -> semiconductor IC. The 'F' suffix denotes Flash program memory; '19' indicates the enhanced mid-range core with nanoWatt XLP extreme low-power features.
Key features include the integrated LCD driver supporting up to 256 segments, 14-channel 10-bit ADC, multiple Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART), I2C, and SPI peripherals, plus 5 PWM modules. The nanoWatt XLP technology provides sleep currents as low as 9 nA typical, making it suitable for battery-powered applications requiring long operational life.
The 44-TQFP package variant (suffix /PT) offers 25 general-purpose I/O pins, while alternate package options include 28-pin SPDIP (/SP), 28-pin SOIC (/SO), 44-pin QFN (/MV), and 40-pin UQFN (/PT with -I/P, /PT). The /PT package is supplied in Tape & Reel format with standard 1,200-piece packaging.
Typical applications include handheld consumer devices with LCD displays, IoT sensor nodes, battery-powered metering, white goods and home appliance front panels, and industrial control panels. The integrated LCD driver eliminates external display controller ICs, reducing BOM cost in user-interface applications. The 1.8V minimum supply enables direct connection to single-cell battery sources including alkaline, NiMH, or lithium chemistries.
When designing with this device, ensure proper ICD/ICSP connection via the PGC/PGD pins for in-circuit debugging and programming. The wide supply voltage range simplifies designs that must accommodate battery voltage variation over discharge cycles without active temperature control.
חלופות תחליף ישיר עבור PIC16F1939T-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16F1939T-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב ADC, I/O Pins, Timers, Package, LCD Driver.
PIC16F1938T-I/PT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F1937T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F1939-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F1947T-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F1939T-I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F1939T-I/MV
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16F19186-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16F1939T-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core | PIC 8-bit RISC |
| CPU Clock Speed | 32 MHz |
| Program Memory (Flash) | 28 KB (16K x 14) |
| RAM | 1 KB |
| EEPROM | 256 bytes |
| מתח אספקה | 1.8 V to 5.5 V |
| I/O Pins | 25 |
| LCD Driver | Integrated (up to 256 segments) |
| ADC | 10-bit, 14-channel ADC |
| PWM Modules | 5 |
| Communication | EUSART, I2C, SPI |
| Timers | 5 (8-bit / 16-bit) |
| מארז | 44-pin TQFP (10x10 mm) |
| טמפרטורת פעולה | -40C to +85C (Industrial) |
| Technology | nanoWatt XLP (eXtreme Low Power) |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 (per JEDEC J-STD-020) |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC16F1939T-I/PT
| פין 1 | RE3/MCLR — Digital input / Master Clear (reset) |
| פין 2 | RA0 — GPIO / analog input AN0 |
| פין 3 | RA1 — GPIO / analog input AN1 |
| פין 4 | RA2 — GPIO / analog input AN2 |
| פין 5 | RA3 — GPIO / analog input AN3 / Vref+ |
| פין 6 | RA4 — GPIO / analog input AN4 |
| פין 7 | RA5 — GPIO / analog input AN5 |
| פין 8 | RA6 — GPIO / analog input AN6 |
| פין 9 | RA7 — GPIO / analog input AN7 |
| פין 10 | VSS — Ground |
| פין 11 | VDD — Positive supply voltage |
| פין 12 | RB0 — GPIO / interrupt-on-change |
| פין 13 | RB1 — GPIO / interrupt-on-change |
| פין 14 | RB2 — GPIO / interrupt-on-change |
| פין 15 | RB3 — GPIO / interrupt-on-change |
| פין 16 | RB4 — GPIO / interrupt-on-change |
| פין 17 | RB5 — GPIO / interrupt-on-change / ICSP PGD |
| פין 18 | RB6 — GPIO / ICSP PGC |
| פין 19 | RB7 — GPIO / ICSP PGM |
| פין 20 | RC0 — GPIO / PWM |
| פין 21 | RC1 — GPIO / PWM |
| פין 22 | RC2 — GPIO / PWM |
| פין 23 | RC3 — GPIO / PWM / SCL |
| פין 24 | RC4 — GPIO / PWM / SDA |
| פין 25 | RC5 — GPIO / PWM |
| פין 26 | RC6 — GPIO / PWM / TX |
| פין 27 | RC7 — GPIO / PWM / RX |
| פין 28 | RE0 — GPIO |
| פין 29 | RE1 — GPIO |
| פין 30 | RE2 — GPIO |
| פין 31 | VDD — Positive supply voltage |
| פין 32 | VSS — Ground |
| פין 33 | RD0 — GPIO |
| פין 34 | RD1 — GPIO |
| פין 35 | RD2 — GPIO |
| פין 36 | RD3 — GPIO |
| פין 37 | RD4 — GPIO |
| פין 38 | RD5 — GPIO / PWM |
| פין 39 | RD6 — GPIO / PWM |
| פין 40 | RD7 — GPIO / PWM |
| פין 41 | SEG0 — LCD segment output |
| פין 42 | SEG1 — LCD segment output |
| פין 43 | SEG2 — LCD segment output |
| פין 44 | SEG3 — LCD segment output / OSC1 |
יישומים טיפוסיים
PIC16F1939T-I/PT מתאים עבור 6 יישוםs: Battery-Powered Metering with LCD Display, White Goods Front Panel User Interface, IoT Sensor Node with LCD, Industrial Control Panel with Segment Display, Handheld Consumer Device with LCD, Automotive Accessory Controller (Non-Safety).
Battery-Powered Metering with LCD Display
The PIC16F1939T-I/PT's integrated LCD driver (up to 256 segments), nanoWatt XLP technology (9 nA sleep current), and 1.8V to 5.5V supply range make it ideal for battery-powered metering applications. Placed as the main MCU, the device drives a segment LCD showing consumption data while sleeping between measurements, preserving battery life over multi-year deployments. Compared to MCUs requiring an external LCD controller, the built-in driver eliminates a companion IC and reduces BOM cost by $0.50-$1.00. Single-cell alkaline, lithium, or two AA batteries connect directly to VDD with no LDO required.
מומלץ
White Goods Front Panel User Interface
The PIC16F1939T-I/PT serves as the user-interface MCU in white goods (washing machines, dishwashers, refrigerators) where its integrated LCD driver, 25 I/O pins, and 5 PWM modules directly interface to mechanical switches, encoders, and indicator LEDs. The 32MHz clock supports responsive button-debounce routines and rapid LCD updates. The 44-TQFP industrial-grade (-40C to +85C) footprint withstands appliance thermal environments. Engineers typically connect 7-segment LCD displays, buzzer drivers, and rotary encoder inputs, with PWM controlling triac-driven motor or heater elements.
מומלץ
IoT Sensor Node with LCD
The PIC16F1939T-I/PT functions as the central MCU in IoT sensor nodes with local LCD readouts, where the integrated LCD driver eliminates a companion display controller and the nanoWatt XLP sleep current extends battery life. The 14-channel 10-bit ADC reads multiple sensor inputs (temperature, humidity, light, pressure) while EUSART or SPI communicates with a wireless module. The 1.8V minimum Vdd accepts direct single-AA or coin-cell battery operation, simplifying power tree design. Compared to MCUs without integrated LCD, the integrated driver saves PCB area and reduces firmware complexity.
מומלץ
Industrial Control Panel with Segment Display
The PIC16F1939T-I/PT is well-suited for industrial control panels where its industrial temperature grade (-40C to +85C), 44-TQFP surface-mount package, and integrated LCD driver support factory-floor operation. Engineers use it to drive 7-segment or 16-segment LCD glass displays showing process variables (temperature, pressure, flow rates) while accepting digital inputs from limit sensors. The 5 PWM outputs control proportional valves or indicator lamps, and the EUSART interfaces to RS-485 transceivers for factory networking. The 1.8V to 5.5V supply accepts 24V bus power with simple buck regulation.
מומלץ
Handheld Consumer Device with LCD
The PIC16F1939T-I/PT's combination of low power, integrated LCD, and 32MHz performance makes it ideal for handheld consumer devices such as remote controls, digital thermometers, kitchen scales, and personal health monitors. The 28KB Flash accommodates feature-rich firmware with multiple modes and LCD menus, while 1KB RAM supports real-time display buffering. The compact 44-TQFP (10x10 mm) footprint fits into small enclosures, and the 1.8V minimum supply enables single-CR2032 or 2xAAA battery operation with measured sleep currents around 9 nA typical per Microchip datasheet DS41578.
מומלץ
Automotive Accessory Controller (Non-Safety)
The PIC16F1939T-I/PT functions as an accessory controller in non-safety automotive applications (interior lighting, climate displays, accessory gauges) where its LCD driver, 25 I/O, and industrial temperature range fit dashboard cluster requirements. Note: this variant is NOT AEC-Q100 qualified - for safety-critical or under-hood use, select automotive-qualified PIC16F1939 equivalents or migrate to PIC16F1939-E/PT extended-temperature variants. The wide supply range tolerates 12V vehicle bus voltage with appropriate regulation, supporting body-electronics modules with segment LCD readouts.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16F1939T-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16F1938T-I/PT | PIC16F1937T-I/PT | PIC16F1939-I/PT | PIC16F1947T-I/PT | PIC16F19186-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | |
| Flash Memory | 28 KB (16K x 14) | 16 KB (-43%) | 8 KB (-71%) | 28 KB (same) | 28 KB (same) | |
| RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | |
| CPU Clock Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | |
| Supply 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 | |
| LCD Driver | Yes (256 segments) | Yes (256 segments) | Yes (256 segments) | Yes (384 segments) | Yes | |
| I/O Pins | 25 | 25 | 25 | 36 | 36 |
מבדילים עיקריים
- Highest memory variant with integrated LCD driver in PIC16F193x family (לעומתPIC16F1938T-I/PT)
- Drop-in upgrade option with extended peripherals and more pins (לעומתPIC16F1947T-I/PT)
- nanoWatt XLP extreme low-power technology (לעומתPIC16F19186-I/PT)
הערות תכנון
Decouple VDD with 100nF + 10uF ceramic capacitors placed within 5mm of each VDD/VSS pair. The PIC16F1939T-I/PT has multiple VDD pins (11, 31) and VSS pins (10, 32) on the 44-TQFP; both pairs must be decoupled separately to prevent digital switching noise from coupling into analog sections. Estimated: total bulk capacitance of 20uF across both VDD rails suffices for typical 32MHz operation with PWM switching loads up to 20mA peak.
Route the ICSP signals (PGC/PGD on RB6/RB7, MCLR on RE3) to a 6-pin 0.1-inch header for in-circuit serial programming and debugging. Add a 10kohm pull-up to VDD on MCLR (RE3) per Microchip recommendation, plus a 100nF capacitor to ground for ESD protection. Keep PGC/PGD traces short (< 50mm) and isolated from switching power traces to ensure reliable programming with the PICkit 3/4 or ICD 4.
Do not configure RE3/MCLR as a digital GPIO in your application code unless you have disabled the MCLR function via the CONFIG register. RE3 is an input-only pin when MCLR is enabled, and floating RE3 can cause spurious resets. Use the internal weak pull-up or external 10kohm pull-up on RE3. Also ensure LCD segment pins are not driven as outputs when LCDCON is active - shared pin functions require careful configuration per the PPS (Peripheral Pin Select) registers.
The 44-TQFP package has theta_JA of approximately 50-60 C/W on a standard JEDEC 4-layer PCB. At maximum 32MHz operation with all peripherals active, the device dissipates approximately 30-50mW (estimated: VDD=5V, IDD_active=10mA), giving a junction-to-ambient temperature rise of 2-3 C/W. No heatsink required for typical applications. For extended-temperature environments, ensure PCB copper area on VDD/VSS pins keeps junction temperature below 85C industrial grade.
When using the 32MHz internal oscillator with 4x PLL, place the PIC16F1939T-I/PT away from high-current switching traces to minimize EMI coupling into the analog ADC inputs. The 10-bit ADC achieves best accuracy with source impedance below 2.5kohm and adequate acquisition time (minimum 5us). Add a 100nF bypass capacitor on each ANx analog input pin used for ADC measurements to filter high-frequency noise.
מידע על תאימות
RoHS and REACH compliant per Microchip product page. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified - not recommended for safety-critical automotive applications.