PIC16C54C-20I/SO Microchip Integrated Circuit (Other) In Stock
Microchip PIC16C54C-20I/SO is an 8-bit EPROM-based CMOS microcontroller with 20 MHz clock, PIC16 CPU core, 18-pin SOIC package, and proven design for simple cost-effective embedded control applications.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 18
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16C54C-20I/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.8200(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 PIC16C54C-20I/SO?
- 8-bit PIC16 CMOS core running up to 20 MHz supporting simple glue-logic replacement and low-cost embedded control designs
- EPROM-based program memory enabling one-time field programmability and small-volume production flexibility
- 18-pin SOIC-18 package providing a compact footprint for legacy and replacement embedded controller board designs
- Low-power CMOS technology reducing static and dynamic current consumption in battery-backed applications
- Introduced in 1990 with an established ecosystem of toolchains, application notes, and reference designs still relevant today
What is PIC16C54C-20I/SO used for?
The PIC16C54C-20I/SO serves legacy and low-complexity embedded control applications including home appliance timers, simple alarm systems, and consumer electronics control panels that do not require ADC or complex peripherals. Its 20 MHz 8-bit PIC16 core and EPROM storage suit small-quantity prototype builds and replacement parts for existing designs already qualified to this device. Hobbyist projects and educational kits also use this device for teaching fundamental microcontroller concepts with a simple, well-documented 8-bit architecture.
What are the specifications of PIC16C54C-20I/SO?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-18 |
| Factory Lead Time | 5Weeks |
| 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 I/O Lines | 12 |
| Number of Timers | 1 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 12 |
| 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) | 25 |
| RAM (words) | 25 |
| ROM (words) | 512 |
| ROM Programmability | OTPROM |
| Speed | 20MHz |
| Supply Current-Max | 16mA |
| 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 | Other |
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 |
Where can I find the PIC16C54C-20I/SO datasheet?
PIC16C54C-20I/SO Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C54C-20I/SO?
Compatible alternatives and drop-in replacements for PIC16C54C-20I/SO:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PDSO18
RISC Microcontroller, 8-Bit, EPROM, PIC16 CPU, 20MHz, CMOS, PDSO18
Frequently Asked Questions
What is the maximum operating frequency of the PIC16C54C-20I/SO and how does it affect throughput?
The PIC16C54C-20I/SO operates at up to 20 MHz, executing most instructions in a single 4-clock cycle (200 ns per instruction at 20 MHz). This throughput is sufficient for control tasks such as LED dimming, debounce routines, and simple state machines in appliance timers, where 5 MIPS instruction throughput handles the required timing without a higher-performance MCU.
Why would a designer choose EPROM-based PIC16C54C over Flash-based PIC devices for a legacy replacement?
When an existing PCB was originally designed and validated with the PIC16C54C-20I/SO, using the same EPROM-based device maintains pin-for-pin and electrical compatibility without re-qualification. Flash-based replacements may differ in reset behavior or supply voltage tolerance, whereas the PIC16C54C preserves the original 20 MHz timing and CMOS logic thresholds required by the surrounding 18-pin circuit, avoiding costly redesign in certified or regulated products.
How does the 18-pin SOIC package of PIC16C54C-20I/SO compare to DIP alternatives for PCB assembly?
The SOIC-18 package reduces footprint by approximately 50% compared to an 18-pin DIP, using 1.27 mm pin pitch instead of 2.54 mm. Surface-mount SOIC assembly supports automated pick-and-place manufacturing, lowering assembly cost per unit in medium-volume production runs. The PIC16C54C-20I/SO in SOIC-18 is also compatible with standard SOIC socket adapters for bench programming before board assembly.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.1400 | $2.14 |
| 10+ | $2.0475 | $20.47 |
| 100+ | $2.0000 | $200.00 |
| 1000+ | $1.8800 | $1880.00 |
| 5000+ | $1.8200 | $9100.00 |
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