PIC16C77-20I/L Microchip Integrated Circuit (Plastic Leaded Chip Carrier) In Stock
Microchip PIC16C77-20I/L is an 8-bit PIC16 microcontroller with 14 KB program memory, 368 bytes RAM, 33 I/O lines, and integrated ADC running at up to 20 MHz. The PLCC-44 package supports legacy industrial and embedded control designs requiring substantial I/O and analog input capability.
- Manufacturer
- Microchip
- Package
- Plastic Leaded Chip Carrier
- Pin Count
- 44
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16C77-20I/L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $10.1300(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 PIC16C77-20I/L?
- 33 I/O lines with integrated ADC enabling multi-channel sensor acquisition and direct peripheral control in a single 8-bit PIC16 device
- 14 KB on-chip program memory and 368 bytes RAM supporting moderately complex embedded firmware without external memory expansion
- 20 MHz maximum clock frequency providing sufficient instruction throughput for real-time control loop applications in industrial and consumer embedded systems
What is PIC16C77-20I/L used for?
The PIC16C77-20I/L is designed for legacy and sustaining production embedded control applications that rely on the PIC16 architecture with high I/O count and integrated ADC. Its 33 I/O lines and 20 MHz clock support multi-axis motor control, industrial panel interfaces, and data acquisition systems reading multiple analog sensors simultaneously. The PLCC-44 package suits existing PCB layouts from established product lines where redesign to a smaller footprint is not cost-effective.
What are the specifications of PIC16C77-20I/L?
| Pbfree Code | Yes |
| Manufacturer Package Code | PLCC-44 |
| Date Of Intro | 1990-01-01 |
| YTEOL | 3 |
| Has ADC | YES |
| 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 | S-PQCC-J44 |
| JESD-609 Code | e3 |
| Low Power Mode | YES |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 33 |
| Number of Serial I/Os | 1 |
| Number of Timers | 5 |
| On Chip Data RAM Width | 8 |
| On Chip Program ROM Width | 14 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LDCC44,.7SQ |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 368 |
| ROM (words) | 8192 |
| ROM Programmability | OTPROM |
| Speed | 20MHz |
| Supply Current-Max | 20mA |
| 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 | J BEND |
| Terminal Pitch | 1.27mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Plastic Leaded Chip Carrier |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 3 |
| ECCN | EAR99 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Where can I find the PIC16C77-20I/L datasheet?
PIC16C77-20I/L Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C77-20I/L?
Compatible alternatives and drop-in replacements for PIC16C77-20I/L:
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
Frequently Asked Questions
How does the PIC16C77-20I/L 33 I/O line count support multi-channel sensor acquisition in an industrial control panel?
With 33 I/O lines, the PIC16C77-20I/L can simultaneously manage digital inputs from push-buttons and limit switches, analog inputs routed to the integrated ADC, and digital outputs driving relays or indicator LEDs on an industrial control panel. This eliminates the need for external I/O expanders in designs requiring up to 33 concurrent signal paths, keeping hardware cost and PCB complexity low for panels monitoring 8 to 16 analog sensors alongside digital I/O.
For a legacy embedded design running at 20 MHz on 5 V, how many instructions per second does the PIC16C77-20I/L execute?
The PIC16C77-20I/L executes most single-cycle instructions in 4 clock periods, yielding an instruction throughput of 5 million instructions per second at the 20 MHz maximum clock frequency. This throughput is adequate for PID control loops updating at rates up to 50 kHz, UART communication at 115200 baud, and debouncing routines for 33 I/O lines running concurrently within the 8-bit PIC16 Harvard architecture.
What procurement considerations apply to sourcing PIC16C77-20I/L for a sustaining production line given its 1990 introduction date?
Introduced in January 1990 and now in a mature lifecycle phase (YTEOL 3), the PIC16C77-20I/L is a legacy device where supply availability may be limited to distributor stock and authorized secondary market channels rather than fresh factory production runs. Procurement teams should audit multi-year stock requirements, evaluate direct replacement with a pin-compatible PIC16F device that shares the 20 MHz, 33 I/O, and ADC feature set, and consider last-time-buy orders to buffer against eventual end-of-life discontinuation.
How does the PLCC-44 package of the PIC16C77-20I/L affect PCB rework and socketing options compared to a standard DIP or QFP package?
The PLCC-44 44-pin package supports ZIF (zero insertion force) sockets commonly used in prototype and low-volume production, allowing the device to be swapped without soldering, which simplifies firmware updates in the field on boards designed with a PLCC socket. Compared to a flat QFP-44, the PLCC footprint's J-lead configuration makes solder joint inspection easier and provides a modest resilience to PCB flexure, though the package occupies more board area than an equivalent LQFP at the same pin count.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
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| 1+ | $10.9600 | $10.96 |
| 4+ | $10.9125 | $43.65 |
| 27+ | $10.8200 | $292.14 |
| 54+ | $10.6900 | $577.26 |
| 100+ | $10.5300 | $1053.00 |
| 1000+ | $10.1300 | $10130.00 |
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