PIC16F648A-I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
PIC16F648A-I/SO is an 8-bit PIC16-family microcontroller from Microchip, operating at up to 20MHz with 7KB of on-chip Flash program memory and comparator peripherals. It is available in an 18-pin SOIC package for surface-mount designs requiring a compact, cost-effective digital control or communication interface solution.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- PIC16F648A-I/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2700(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 at up to 20MHz delivers efficient execution for digital control, communication protocol, and state-machine firmware
- 7KB on-chip Flash program memory stores application code without external memory, minimizing BOM and PCB area
- 18-pin SOIC package balances I/O availability with compact surface-mount footprint for mid-density embedded designs
- RoHS-compliant Pb-free construction supports modern environmental compliance requirements for global market deployment
Applications
The PIC16F648A-I/SO is used in digital control modules, communication interface bridges, and simple automation systems where an 8-bit 20MHz microcontroller with 7KB Flash provides sufficient processing power at minimal cost. Its 18-pin SOIC package fits high-density PCB layouts for consumer electronics accessories, industrial relay controllers, and custom HID devices. Designers often select the PIC16F648A when the application does not require an ADC, saving cost compared to higher-integration variants while retaining UART, SPI, and timer peripherals for protocol bridging and timing-critical tasks.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-18 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Has ADC | NO |
| 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-G18 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 16 |
| Number of Timers | 3 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 256 |
| ROM (words) | 4096 |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 20MHz |
| Supply Current-Max | 3.5mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3V |
| 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 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| ## PIC16F648A-I/SO Alternates Showing results | Image |
| 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 PIC16F648A-I/SO:
suggested
suggested
suggested
suggested
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO18
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO18
RISC Microcontroller, 8-Bit, FLASH, PIC16 CPU, 20MHz, CMOS, PDSO18
Frequently Asked Questions
What communication peripherals are available on the PIC16F648A-I/SO for serial protocol bridging applications?
The PIC16F648A-I/SO integrates a hardware USART capable of asynchronous UART and synchronous SPI/I2C-compatible communication at up to 20MHz clock rates, enabling it to bridge protocols between sensors, displays, and host microcontrollers without consuming all available firmware cycles on bit-banged serial routines.
How does the PIC16F648A-I/SO's 7KB Flash capacity compare to the PIC16F628A, and when is the larger memory justified?
The PIC16F648A-I/SO provides 7KB of Flash versus 2KB in the PIC16F628A, making it the better choice when the application firmware includes lookup tables, string literals, or multiple protocol stacks that exceed 2KB, while both run at 20MHz and share the same 18-pin SOIC footprint, simplifying a pin-compatible upgrade.
For a surface-mount relay controller PCB, how does the 18-pin SOIC package of the PIC16F648A-I/SO simplify automated assembly?
The 18-pin SOIC package of the PIC16F648A-I/SO has a 1.27mm pin pitch compatible with standard SMT pick-and-place equipment and reflow soldering, and its 18 pins provide enough GPIO to drive up to 8 relay coils through driver transistors while reserving pins for a UART status interface, all within a compact footprint under 12mm x 5mm.
Since the PIC16F648A-I/SO lacks an ADC, which analog measurement tasks require adding an external IC, and what is a common companion chip?
Because the PIC16F648A-I/SO has no on-chip ADC, applications needing analog-to-digital conversion — such as temperature sensing with an NTC thermistor or battery voltage monitoring — require an external ADC such as the MCP3202 (2-channel, 12-bit, SPI) connected to the PIC's SPI port, adding typically one additional SOIC-8 chip to the BOM.
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+ | $1.2700 | $1.27 |
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.”