PIC16F873-20/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC16F873-20/SO is an 8-bit PIC microcontroller running up to 20 MHz in a 28-pin SOIC package with integrated ADC and EEPROM. It features 22 I/O pins, 4 KB Flash program memory, and 192 bytes RAM. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16F873-20/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.1100(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit PIC16 core running up to 20 MHz with 4 KB Flash and 192 bytes RAM in a compact 28-pin SOIC package
- Integrated 8-channel 10-bit ADC enables direct analog sensor interfacing without external conversion circuitry
- On-chip EEPROM and USART/SPI/I2C peripherals support data logging and multi-protocol communication in a single chip
Applications
The PIC16F873-20/SO suits cost-sensitive embedded control applications such as appliance controllers, HVAC systems, and industrial sensor nodes where the 28-pin SOIC footprint minimizes PCB area. Its built-in 10-bit ADC and serial communication peripherals simplify designs for motor speed control, temperature monitoring, and data acquisition at up to 20 MHz. The device is also widely used in educational and prototyping platforms owing to its straightforward PIC16 architecture and broad development tool support.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-28 |
| Date Of Intro | 1998-12-01 |
| YTEOL | 3 |
| Has ADC | YES |
| 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-G28 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 22 |
| Number of Timers | 3 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 192 |
| RAM (words) | 192 |
| ROM (words) | 4096 |
| ROM Programmability | FLASH |
| Speed | 20MHz |
| Supply Current-Max | 20mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| 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 | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC16F873-20/SO:
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO28
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO28
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO28
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO28
Frequently Asked Questions
How much memory and how many I/O pins does the PIC16F873-20/SO provide?
The PIC16F873-20/SO provides 4 KB of Flash program memory, 192 bytes of RAM, and 128 bytes of EEPROM, along with 22 general-purpose I/O pins in its 28-pin SOIC package. This combination is sufficient for moderately complex control tasks running at up to 20 MHz clock frequency.
Which sensor-interface scenarios suit the PIC16F873-20/SO over a simpler PIC12 device?
When a design needs 8 analog input channels with 10-bit ADC resolution, three communication ports (USART, SPI, and I2C), and 22 digital I/O pins simultaneously, the PIC16F873-20/SO is a stronger fit than the PIC12 family which typically offers only 4 I/O pins and one or two peripherals. It handles multi-sensor data acquisition at 20 MHz with enough RAM for sensor averaging buffers.
Is the PIC16F873-20/SO suitable for industrial temperature environments?
Yes, the PIC16F873-20/SO is rated for the industrial temperature range of -40°C to 85°C, making it appropriate for factory automation, HVAC controllers, and outdoor instrumentation. The 28-pin SOIC package is compatible with standard wave-soldering processes and withstands the thermal cycling typical of industrial deployments.
Related Guides
150141RS73100 Red LED Indicator and Current-Resistor Design Guide
Design a reliable 150141RS73100 red LED indicator with worst-case resistor sizing, GPIO checks, PWM drive, layout, and production validation.
Jul 11, 2026
742792651 Ferrite Bead EMI Filter and Power Integrity Design Guide
Practical guidance for using 742792651 in ferrite-bead EMI filters, including bias, DCR, damping, layout, and validation.
Jul 11, 2026
How to Choose a Ferrite Bead for EMI Suppression Rails: Selection Guide
Compare 742792651 and related ferrite beads by impedance, current rating, DCR, package, layout, and EMI test context.
Jul 10, 2026
150141BS73100 Design Guide for 3528 Status Indicator LED Circuits
Design 3528 status indicator LED circuits with 150141BS73100: current setting, resistor sizing, polarity, optics, and sourcing checks.
Jul 10, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $7.1900 | $7.19 |
| 23+ | $6.5550 | $150.76 |
| 25+ | $6.5500 | $163.75 |
| 50+ | $6.5100 | $325.50 |
| 100+ | $6.4300 | $643.00 |
| 1000+ | $6.1100 | $6110.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”