PIC16C621A-04I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
PIC16C621A-04I/SO is an 8-bit EPROM-based microcontroller from Microchip operating at up to 4 MHz clock frequency with 18-pin SOIC package. It features 36 bytes RAM, 512 words program memory, and 13 I/O pins for embedded control applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Category
- Integrated Circuit
- Price
- From $2.0600(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 PIC16C621A-04I/SO?
- 8-bit PIC16 CPU core with EPROM program memory for field-programmable embedded applications
- Operates at up to 4 MHz clock frequency with low-power CMOS design for battery-sensitive designs
- 18-pin SOIC SMT package enabling compact PCB layouts with 13 configurable I/O pins
What is PIC16C621A-04I/SO used for?
The PIC16C621A-04I/SO is well suited for low-cost embedded control applications such as appliance control, sensor interfacing, and simple automation tasks. Its 8-bit PIC16 architecture and SOIC-18 form factor make it ideal for space-constrained industrial and consumer products requiring reliable field-programmable logic. Designers commonly use it in HVAC controllers, motor speed regulators, and small handheld instruments operating from 3 V to 5 V power supplies.
What are the specifications of PIC16C621A-04I/SO?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-18 |
| Factory Lead Time | 7Weeks |
| Date Of Intro | 1990-01-01 |
| YTEOL | 3 |
| 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 | 13 |
| Number of Timers | 3 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | NO |
| 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) | 96 |
| ROM (words) | 1024 |
| ROM Programmability | OTPROM |
| Speed | 40MHz |
| Supply Current-Max | 7mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 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 |
| 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 |
What are equivalent replacements for PIC16C621A-04I/SO?
Compatible alternatives and drop-in replacements for PIC16C621A-04I/SO:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 40MHz, CMOS, PDSO18
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 40MHz, CMOS, PDSO18
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 40MHz, CMOS, PDSO18
Frequently Asked Questions
What is the maximum clock frequency supported by PIC16C621A-04I/SO?
The PIC16C621A-04I/SO supports a maximum clock frequency of 4 MHz in the -04 speed grade variant. The PIC16C621A family also offers faster -20 variants running up to 20 MHz, giving designers flexibility for throughput-sensitive applications requiring higher instruction execution rates.
How much program memory and RAM does the PIC16C621A-04I/SO provide for embedded firmware?
The PIC16C621A-04I/SO provides 512 words of EPROM program memory and 36 bytes of on-chip data RAM. This combination, alongside 13 I/O pins in the 18-pin SOIC package, supports compact firmware solutions for sensor control, display driving, and simple state-machine applications operating at 5 V.
Which compact board designs benefit from the SOIC-18 surface-mount package of PIC16C621A-04I/SO?
The SOIC-18 package of PIC16C621A-04I/SO measures approximately 11.6 mm x 7.5 mm, making it suitable for space-constrained PCBs in appliances, remote controls, and industrial sensors. The SMT footprint reduces board area compared to DIP alternatives, and the 13 available I/O pins cover typical button-matrix and LED-driver interface requirements.
When would a designer choose PIC16C621A-04I/SO over a PIC16F-series device?
A designer would choose PIC16C621A-04I/SO when one-time-programmable EPROM-based security is preferable over flash reprogrammability, or when sourcing legacy designs from the 1990-era PIC16C product line. For new designs requiring in-system reprogrammability at 3.3 V or 5 V, PIC16F628A or similar flash-based 18-pin replacements offer pin-compatible upgrades with up to 2048 words of program memory.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.4600 | $2.46 |
| 4+ | $2.1955 | $8.78 |
| 8+ | $2.1638 | $17.31 |
| 16+ | $2.1322 | $34.11 |
| 1000+ | $2.1100 | $2110.00 |
| 5000+ | $2.0600 | $10300.00 |
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