PIC16F1946-I/MR Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip PIC16F1946-I/MR is an 8-bit PIC16 microcontroller with 14KB Flash, 1KB RAM, and up to 53 I/O pins in a QFN-64 package. Operates at up to 32 MHz from a 1.8V to 5.5V supply, with integrated 10-bit ADC and multiple communication peripherals. Available in stock with worldwide shipping at competitive pricing.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 64
- Lifecycle
- ACTIVE
- Datasheet
- PIC16F1946-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
Key Features
- 8-bit PIC16 enhanced mid-range core with 14KB Flash and 1KB SRAM running at up to 32 MHz for complex embedded control tasks
- Up to 53 I/O pins in QFN-64 package enabling large I/O matrices, multiplexed displays, and multi-peripheral designs in a compact footprint
- Wide supply voltage range from 1.8V to 5.5V with operation at 16 MHz minimum at 2.3V for mixed-voltage and battery-powered designs
- Integrated 10-bit ADC, multiple UART/SPI/I2C modules, and enhanced PWM outputs for comprehensive sensor and communication interfacing
Applications
The PIC16F1946-I/MR targets applications requiring a high I/O count 8-bit microcontroller such as industrial HMI panels, multi-zone HVAC controllers, and building automation nodes that interface with keyboards, segment displays, relay banks, and serial sensors simultaneously. Its 14KB Flash and 53 available I/O pins provide sufficient resources for complex state-machine firmware controlling multiple independent subsystems without an external I/O expander. The 1.8V to 5.5V supply range and 32 MHz maximum clock also make it a suitable low-cost upgrade path for legacy PIC16 designs that need more program memory and I/O density.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-64 |
| Factory Lead Time | 5Weeks |
| YTEOL | 8 |
| Has ADC | YES |
| Additional Feature | OPERATES WITH 2.3V MIN @ 16 MHZ |
| Bit Size | 8 |
| 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 | 8 |
| 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) | 14336 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 32MHz |
| Supply Current-Max | 4.1mA |
| Supply Voltage-Max | 5.5V |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC16F1946-I/MR:
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 32MHz, CMOS, PQCC64
Frequently Asked Questions
How many I/O pins does PIC16F1946-I/MR provide and how does this benefit multi-peripheral embedded designs?
The PIC16F1946-I/MR provides up to 53 general-purpose I/O pins within a 64-pin QFN package measuring 9 mm x 9 mm. This pin count supports simultaneous connection of a 4x4 keypad (8 pins), a 7-segment display (7 pins), 4 relay outputs, 2 UART channels, an SPI bus, and multiple ADC inputs without requiring external port expanders, reducing BOM cost and I2C bus overhead.
What is the minimum supply voltage at which PIC16F1946-I/MR operates at 16 MHz and why is this relevant for battery designs?
The PIC16F1946-I/MR operates at 16 MHz from a minimum supply voltage of 2.3V. This means the device continues to run at mid-range clock speed as a single-cell lithium battery discharges from 3.0V toward its 2.5V cutoff, providing additional battery life versus devices that require 3.3V or higher for the same frequency without additional regulation stages.
Which communication peripherals are integrated in PIC16F1946-I/MR and what serial protocols can it support simultaneously?
The PIC16F1946-I/MR integrates multiple serial communication modules including 2 EUSART (UART) channels, 2 MSSP modules configurable as SPI or I2C, and an addressable USART. This allows simultaneous operation of RS-232 or RS-485 host communication at up to 1 Mbps baud rate, I2C sensor polling at 400 kHz, and SPI display or memory interface at up to 8 MHz without software bit-banging.
For a building automation controller replacing an older DIP-packaged PIC16, what advantages does the QFN-64 package of PIC16F1946-I/MR offer?
The QFN-64 package of PIC16F1946-I/MR measures 9 mm x 9 mm versus approximately 32 mm x 15 mm for a standard 64-pin DIP, reducing PCB footprint by over 80%. The exposed thermal pad improves heat dissipation, and the 0.5 mm lead pitch supports automated SMT assembly for production builds. The PIC16 architecture retains full software compatibility with legacy 14-bit PIC16 firmware, minimizing re-coding effort during migration.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.5000 | $3.50 |
| 100+ | $2.7000 | $270.00 |
| 1000+ | $2.5000 | $2500.00 |
| 5000+ | $2.3700 | $11850.00 |
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