PIC16C781-I/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip PIC16C781-I/P is an 8-bit OTP microcontroller running at up to 20 MHz with 1.75 kB program memory and integrated ADC in a 20-pin PDIP package. It operates from a 4 V minimum supply voltage with low-power peripheral set. Well-suited for appliance control, sensor readout, and simple embedded automation tasks.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- PIC16C781-I/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $4.0000(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 CPU core clocked at up to 20 MHz for responsive embedded control tasks
- 1.75 kB OTP program memory enabling one-time field programming in cost-sensitive production runs
- Integrated ADC supporting direct sensor signal acquisition without external analog front-end ICs
- 4 V minimum supply voltage operation enabling use with a range of battery and regulated supply designs
- 20-pin PDIP package providing easy prototyping and through-hole assembly for low-volume designs
Applications
The PIC16C781-I/P is used in cost-sensitive embedded applications such as appliance motor controllers, battery-powered sensor nodes, and simple automation timers where 8-bit processing and 1.75 kB OTP memory are sufficient. Its integrated ADC enables direct connection to resistive sensors, NTC thermistors, and potentiometers without external analog circuitry. The 20-pin PDIP package suits prototype boards, educational kits, and low-volume industrial control modules assembled by hand.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-20 |
| Factory Lead Time | 6Weeks |
| YTEOL | 3 |
| Has ADC | YES |
| Additional Feature | ALSO OPERATES AT 4V MINIMUM SUPPLY |
| Bit Size | 8 |
| Boundary Scan | NO |
| CPU Family | PIC16 |
| Clock Frequency-Max | 20MHz |
| DAC Channels | YES |
| DMA Channels | NO |
| Format | FIXED POINT |
| Integrated Cache | NO |
| JESD-30 Code | R-PDIP-T20 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 3 |
| Number of I/O Lines | 16 |
| Number of Timers | 8 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| RAM (bytes) | 128 |
| ROM (words) | 1024 |
| ROM Programmability | OTPROM |
| Speed | 20MHz |
| Supply Current-Max | 250mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC16C781-I/P:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PDIP20
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PDIP18
Frequently Asked Questions
What is the maximum clock frequency of PIC16C781-I/P and how does it affect embedded control responsiveness?
The PIC16C781-I/P supports a maximum clock frequency of 20 MHz, allowing it to execute up to 5 million instructions per second in its single-cycle architecture. This throughput is adequate for appliance timers, sensor polling loops, and PWM motor control tasks in 8-bit embedded designs operating from 4 V to 5.5 V supply rails.
How does the OTP program memory in PIC16C781-I/P affect production programming strategy?
The 1.75 kB OTP memory is written once at the factory or in-circuit before deployment, which suits high-volume production where firmware is finalized before shipment. Unlike flash-based variants, OTP devices cannot be field-updated, so PIC16C781-I/P is best for fixed-function applications with stable firmware in appliance or industrial control production lines.
Which sensor interface designs benefit from the integrated ADC in PIC16C781-I/P?
The onboard ADC allows PIC16C781-I/P to directly digitize signals from NTC thermistors, potentiometers, light-dependent resistors, and pressure sensor voltage dividers without an external ADC chip. This integration reduces BOM cost and simplifies PCB layout in 4 V to 5.5 V powered sensor systems requiring 8-bit or higher analog measurement resolution.
For a low-volume prototype board, what assembly advantage does the 20-pin PDIP package of PIC16C781-I/P offer?
The 20-pin PDIP package has a 2.54 mm pin pitch compatible with standard breadboards and through-hole PCB pads, enabling manual soldering and repeated insertion into ZIF sockets during prototyping. This package style reduces tooling cost compared to surface-mount alternatives and allows easy replacement of the PIC16C781-I/P during development and debug cycles.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $5.3500 | $5.35 |
| 30+ | $5.3200 | $159.60 |
| 50+ | $5.3000 | $265.00 |
| 66+ | $4.3900 | $289.74 |
| 100+ | $4.2300 | $423.00 |
| 1000+ | $4.0000 | $4000.00 |
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