PIC16LF1946-I/MR Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The PIC16LF1946-I/MR is an 8-bit PIC16 microcontroller with 14 KB flash, 32 MHz maximum clock, and integrated ADC for analog sensing. It operates from 1.8 V minimum at 16 MHz, covering 2.5 V, 3.3 V, and 5 V supply rails. Available in a 64-pin QFN package for high pin-count, space-constrained embedded control applications.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- PIC16LF1946-I/MR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.3700(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PIC16LF1946-I/MR?
- 8-bit PIC16 core running up to 32 MHz with 14 KB flash for cost-effective embedded control firmware
- Wide supply operation from 1.8 V at 16 MHz to 5 V at 32 MHz, ideal for battery and regulated rail designs
- Integrated ADC for direct analog sensor connectivity without external signal-conditioning ICs
- 64-pin QFN-64 package delivering high I/O density in a compact surface-mount footprint
- Enhanced mid-range PIC16 architecture with hardware peripherals including MSSP, EUSART, and CCP modules
What is PIC16LF1946-I/MR used for?
The PIC16LF1946-I/MR suits low-power consumer electronics, home appliances, and building automation devices where an 8-bit MCU with ample I/O pins and analog inputs must run from regulated 3.3 V or 5 V rails. Its 1.8 V minimum supply capability at 16 MHz also makes it suitable for battery-operated sensor nodes and energy-harvesting applications that need to stretch every milliamp. The wide peripheral set including MSSP, EUSART, and multiple timers reduces external component count in industrial panel controllers and metering equipment.
What are the specifications of PIC16LF1946-I/MR?
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-64 |
| Factory Lead Time | 5Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Additional Feature | OPERATES WITH 1.8V MIN @ 16 MHZ |
| Bit Size | 16 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 32MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | S-PQCC-N64 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 54 |
| Number of Serial I/Os | 2 |
| Number of Timers | 8 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC64,.35SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 512 |
| ROM (words) | 8192 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 32MHz |
| Supply Current-Max | 4.3mA |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 2.5V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| 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 | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC16LF1946-I/MR datasheet?
PIC16LF1946-I/MR Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16LF1946-I/MR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the minimum supply voltage for the PIC16LF1946-I/MR and what clock speed does it support at that voltage?
The PIC16LF1946-I/MR operates from a minimum supply of 1.8 V at up to 16 MHz, and scales to its maximum 32 MHz clock when powered from 2.5 V to 5 V. This flexibility allows the same device to serve both low-power battery applications running at 1.8 V/16 MHz and full-speed 5 V industrial designs without changing the hardware.
How much program memory does the PIC16LF1946-I/MR provide and how does it compare to standard PIC16F1946?
The PIC16LF1946-I/MR provides 14 KB of on-chip flash program memory and 1 KB of data SRAM. The LF variant is electrically identical to the PIC16F1946 but is specified for lower voltage operation starting at 1.8 V, whereas the standard F1946 requires a minimum of 2.3 V, giving the LF variant an advantage in battery-backed designs where the supply can droop below 2.3 V.
Which analog and communication peripherals are integrated in the PIC16LF1946-I/MR for sensor interface designs?
The PIC16LF1946-I/MR integrates a 10-bit ADC with multiple input channels, two MSSP modules supporting SPI and I2C, two EUSART ports for serial communication, and multiple CCP/PWM capture-compare-PWM units. This combination enables the device to simultaneously read analog sensors at up to 10-bit resolution, communicate over I2C buses, and generate PWM signals for motor or LED control without external interface ICs.
For a 64-pin embedded controller design, what advantage does the QFN-64 package of the PIC16LF1946-I/MR offer over a TQFP-64?
The QFN-64 package shrinks the PCB footprint to approximately 9 mm x 9 mm compared to roughly 12 mm x 12 mm for an equivalent TQFP-64, saving about 40% of board area. The exposed thermal pad on the QFN also improves heat transfer at elevated ambient temperatures, which is relevant in panel controllers and enclosed industrial enclosures where airflow is limited.
How does the PIC16LF1946-I/MR support low-power standby in a battery-operated meter reading application?
The PIC16LF1946-I/MR supports multiple low-power modes including Sleep, where the CPU halts and only asynchronous peripherals such as the watchdog timer and pin-change interrupt remain active, drawing just a few microamps. For a meter that samples once per minute, the MCU can sleep for 59 seconds at sub-10 µA quiescent current and wake via a 32 kHz oscillator timer interrupt, dramatically reducing average power consumption versus always-on operation at 32 MHz.
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