PIC16F1939-I/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The PIC16F1939-I/ML is an 8-bit PIC16 microcontroller from Microchip operating up to 32 MHz with 28 KB Flash, 1 KB RAM, and an integrated 10-bit ADC plus 5-bit DAC, housed in a 44-pin QFN package. It features multiple communication peripherals including USART, SPI, and I2C, along with comparators and enhanced capture/compare/PWM modules. Designed for motor control, sensor interfaces, and embedded control applications requiring a compact, high-integration MCU.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 44
- Lifecycle
- ACTIVE
- Datasheet
- PIC16F1939-I/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0613(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit PIC16 core clocked up to 32 MHz delivering up to 8 MIPS throughput
- 28 KB Flash program memory and 1 KB SRAM for moderate firmware complexity
- 12-channel 10-bit ADC and integrated 5-bit DAC for mixed-signal designs
- Enhanced CCP modules with 10-bit PWM for motor speed and LED dimming control
- USART, SPI, I2C peripherals for multi-protocol sensor and module interfacing
- Compact 44-pin QFN package (8 mm × 8 mm) with up to 36 I/O pins
Applications
The PIC16F1939-I/ML is used in appliance motor controllers, HVAC system control boards, and industrial sensor nodes where its integrated ADC, DAC, and PWM modules eliminate external components. Its 44-pin QFN footprint and 32 MHz operation also make it suitable for compact home automation modules, battery management systems, and portable medical devices requiring mixed-signal processing in a minimal PCB area.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-44 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 32MHz |
| DAC Channels | YES |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQCC-N44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 36 |
| Number of Serial I/Os | 1 |
| Number of Timers | 8 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC44,.28SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, VERY THIN PROFILE, HEAT SINK/SLUG |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 1024 |
| ROM (words) | 28672 |
| ROM Programmability | FLASH |
| Speed | 32MHz |
| Supply Current-Max | 4.1mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.5V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | 3A991.a.2 |
| HTS Code | 8542.31.00.15 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC16F1939-I/ML:
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 32MHz, CMOS, PQCC44
Frequently Asked Questions
How much Flash and RAM does the PIC16F1939-I/ML provide, and is it sufficient for a typical sensor application?
The PIC16F1939-I/ML includes 28 KB of Flash program memory and 1 KB (1024 bytes) of SRAM data memory. For a typical sensor application such as a multi-channel temperature logger with display output and UART logging, 28 KB Flash comfortably holds the application firmware along with a small lookup table, and 1 KB RAM is adequate for a sensor data buffer and UART transmit queue.
Does the PIC16F1939-I/ML include a built-in DAC, and what resolution does it offer?
Yes, the PIC16F1939-I/ML integrates a 5-bit digital-to-analog converter, providing 32 discrete voltage levels between VSS and VDD. While this 5-bit resolution is coarser than an external 12-bit DAC, it is sufficient for setting bias voltages, comparator thresholds, or driving a simple signal-level output in applications like class-D audio tone generation or analog setpoint generation in HVAC controls.
What PWM capabilities does the PIC16F1939-I/ML offer for motor speed control?
The PIC16F1939-I/ML contains multiple Enhanced Capture/Compare/PWM (ECCP) modules that generate 10-bit PWM signals at frequencies up to approximately 31 kHz at 32 MHz system clock. The enhanced modules support full-bridge and half-bridge output modes directly useful for H-bridge DC motor control, with dead-band delay insertion to prevent shoot-through in half-bridge configurations, simplifying motor driver design.
Which communication interfaces are available on the PIC16F1939-I/ML for connecting to sensors and displays?
The PIC16F1939-I/ML includes USART (asynchronous RS-232 and synchronous SPI mode), MSSP for hardware SPI up to 8 Mbps and I2C up to 1 MHz. This allows simultaneous connection to an I2C temperature sensor, a SPI display module, and a UART debug port on a single chip without software bit-banging, reducing CPU overhead and improving communication reliability in embedded control designs.
How compact is the PIC16F1939-I/ML QFN package, and how does it compare to the PDIP version for space-constrained designs?
The PIC16F1939-I/ML in the 44-pin QFN package measures 8 mm × 8 mm with a 0.65 mm pad pitch. This is significantly smaller than a hypothetical 40-pin PDIP alternative at approximately 52 mm × 14 mm. The QFN's exposed thermal pad also improves heat dissipation to the PCB ground plane, and the leadless package reduces parasitic inductance on high-speed I/O lines operating at 32 MHz.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0631 | $1.06 |
| 25+ | $1.0613 | $26.53 |
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