PIC16C56A-20/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The PIC16C56A-20/P is a Microchip 8-bit OTP PIC16 microcontroller running at up to 20 MHz with 1.5 KB of OTP program memory and 25 bytes of RAM. It features 12 I/O pins in a through-hole 18-pin DIP package. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 18
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16C56A-20/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.7100(MOQ 1)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PIC16C56A-20/P?
- 8-bit PIC16 RISC core running at up to 20 MHz for simple control tasks
- OTP (one-time programmable) 1.5 KB program memory for cost-effective high-volume production
- 12 bidirectional I/O pins configurable for digital control interfaces
- 18-pin DIP package facilitating easy through-hole assembly and prototyping
- Low standby current consumption enabling battery-backed or always-on embedded designs
What is PIC16C56A-20/P used for?
The PIC16C56A-20/P is suited for simple, cost-sensitive embedded control applications where one-time-programmable memory reduces unit cost at high production volumes, such as consumer appliance controllers, toy logic boards, and LED display drivers. Its 20 MHz clock and 12 I/O pins handle straightforward state-machine and timing-based control tasks without the overhead of flash or EEPROM. Industrial OEM equipment and white goods that require locked, unchangeable firmware benefit from the OTP architecture's tamper resistance and predictable unit economics.
What are the specifications of PIC16C56A-20/P?
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-18 |
| Factory Lead Time | 6Weeks |
| 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-PDIP-T18 |
| 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 | DIP18,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 25 |
| RAM (words) | 25 |
| ROM (words) | 1024 |
| ROM Programmability | OTPROM |
| Speed | 20MHz |
| Supply Current-Max | 16mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC16C56A-20/P datasheet?
PIC16C56A-20/P Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C56A-20/P?
Compatible alternatives and drop-in replacements for PIC16C56A-20/P:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PDIP18
RISC Microcontroller, 8-Bit, OTPROM, PIC CPU, 20MHz, CMOS, PDIP18
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PDIP18
Frequently Asked Questions
What program memory type does PIC16C56A-20/P use, and how does OTP differ from flash-based microcontrollers?
The PIC16C56A-20/P uses one-time programmable (OTP) memory with 1.5 KB capacity. Unlike flash microcontrollers that can be reprogrammed in-system, OTP devices are programmed once at the factory or on the bench and cannot be erased. This makes them ideal for high-volume, locked-firmware products where unit cost is critical and firmware changes are undesirable after production.
At what clock speed does the PIC16C56A-20/P operate, and what timing resolution does this enable?
The PIC16C56A-20/P runs at up to 20 MHz, yielding a minimum instruction cycle of 200 ns on its 4-clock-per-instruction PIC16 core. This enables precise millisecond and microsecond timing loops suitable for PWM generation, serial bit-banging, and sensor debounce tasks in 8-bit control applications without an external timer IC.
How many I/O pins does PIC16C56A-20/P provide, and in which package does it come for through-hole designs?
The PIC16C56A-20/P provides 12 bidirectional I/O pins in an 18-pin DIP (PDIP-18) through-hole package with 0.300 inch row spacing. This classic through-hole format simplifies hand-soldering and breadboard prototyping, and the 12 I/O pins suffice for controlling relays, reading switches, and driving LED indicators in compact appliance or control board designs.
What is the end-of-life outlook for PIC16C56A-20/P, and how should procurement teams plan sourcing?
The PIC16C56A-20/P carries a YTEOL (years to end-of-life) rating of 3, indicating it is approaching end-of-life within approximately 3 years from the current date. Procurement teams managing designs with this 20 MHz OTP device should plan last-time-buy orders, evaluate migration to a pin-compatible flash PIC16F alternative, and maintain sufficient safety stock to cover remaining production volumes before the device is discontinued.
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