PIC16F631-I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
PIC16F631-I/SO is an 8-bit PIC microcontroller with 1.75 KB Flash program memory and up to 20 MHz clock frequency, housed in a 20-pin SOIC package. It operates down to 2 V supply voltage at 8 MHz, making it suitable for low-power battery applications. Designed for consumer appliances, motor control, and low-cost embedded control systems.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- PIC16F631-I/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3473(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 running up to 20 MHz for cost-effective control tasks
- 1.75 KB Flash program memory with in-circuit programming support
- Operates at 2 V supply voltage at 8 MHz for battery-powered applications
- 20-pin SOIC package with multiple GPIO for compact PCB designs
- PIC16 architecture with wide ecosystem of development tools and compilers
- No ADC required variant for pure digital and logic control designs
Applications
The PIC16F631-I/SO is well-suited for simple consumer appliances, home automation control panels, and motor drive sequencing logic where an 8-bit microcontroller with low flash footprint is sufficient. Its ability to run at 2 V makes it attractive for battery-operated devices such as remote controls, smart locks, and portable sensors where extended battery life is a priority. The 20-pin SOIC package and low component count enable compact, cost-effective PCB designs for high-volume consumer and industrial products.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-20 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Has ADC | NO |
| Additional Feature | ALSO OPERATES AT 2V SUPPLY AT 8 MHZ |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 20MHz |
| DAC Channels | NO |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 2 |
| Number of I/O Lines | 18 |
| Number of Serial I/Os | 1 |
| Number of Timers | 2 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 64 |
| ROM (words) | 1792 |
| ROM Programmability | FLASH |
| Screening Level | AEC-Q100; TS 16949 |
| Speed | 20MHz |
| Supply Current-Max | 5.45mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Small Outline Packages |
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 | Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC16F631-I/SO:
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO20
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO20
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO20
Frequently Asked Questions
At what supply voltage can the PIC16F631-I/SO operate, and does it support low-voltage battery systems?
The PIC16F631-I/SO can operate at supply voltages as low as 2 V when clocked at up to 8 MHz, making it compatible with two-cell alkaline battery packs, single-cell lithium primaries, and supercapacitor-backed power supplies. At full speed of 20 MHz, higher supply voltages are required. This flexibility makes it a strong candidate for remote controls, portable sensors, and energy-harvesting nodes where supply voltage varies widely during operation.
How much program memory does the PIC16F631-I/SO provide, and is 1.75 KB Flash sufficient for typical control firmware?
The PIC16F631-I/SO provides 1.75 KB (approximately 1,792 bytes) of Flash program memory, which accommodates simple finite state machines, protocol handlers, and motor sequencing routines written in optimized C or assembly. For typical applications such as LED drivers, keypad scanners, or PWM generation that require only a few hundred instructions, 1.75 KB is adequate. More complex applications requiring communication stacks or lookup tables may require stepping up to a larger PIC16F device with more Flash.
What are the mechanical dimensions and pin count of the PIC16F631-I/SO package, and does it support hand soldering for prototyping?
The PIC16F631-I/SO comes in a 20-pin SOIC (SOIC-20) package with 1.27 mm pin pitch on a body approximately 12.8 mm long, which is compatible with standard hand-soldering and most automated pick-and-place assembly processes. The 20-pin count provides sufficient GPIO for typical embedded control applications, and the through-hole-friendly wide-body SOIC variant can be used with DIP-compatible breadboard adapters for rapid prototyping.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.8300 | $1.83 |
| 20+ | $1.4333 | $28.67 |
| 50+ | $1.3473 | $67.36 |
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