PIC16C65B-20/L Microchip Integrated Circuit (Plastic Leaded Chip Carrier) In Stock
The PIC16C65B-20/L is an 8-bit PIC16 family microcontroller from Microchip operating up to 20 MHz in a 44-pin PLCC package. It features a Harvard architecture CPU without an on-chip ADC, suited for digital I/O-intensive embedded control applications. Suitable for legacy industrial control panels, home automation replacement boards, and retro-compatible embedded system upgrades.
- Manufacturer
- Microchip
- Package
- Plastic Leaded Chip Carrier
- Pin Count
- 44
- Lifecycle
- NOT RECOMMENDED
- Datasheet
- PIC16C65B-20/L Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $5.1523(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 PIC16C65B-20/L?
- 8-bit PIC16 CPU core up to 20 MHz clock frequency
- 44-pin PLCC package with socket-friendly design
- Harvard architecture for separate instruction and data buses
- No on-chip ADC — dedicated digital I/O microcontroller
- RoHS-compliant lead-free construction
- Mature PIC16 family with extensive toolchain support
What is PIC16C65B-20/L used for?
The PIC16C65B-20/L serves embedded digital control applications where an 8-bit Harvard-architecture microcontroller at 20 MHz clock speed is required without the overhead of on-chip ADC circuitry. Its 44-pin PLCC package is socket-mountable, making it easy to replace in field-serviced industrial control panels and legacy equipment. The part is well supported by Microchip's MPLAB toolchain, enabling straightforward firmware development and maintenance for long-lifecycle industrial designs.
What are the specifications of PIC16C65B-20/L?
| Pbfree Code | Yes |
| Manufacturer Package Code | PLCC-44 |
| 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 | S-PQCC-J44 |
| JESD-609 Code | e3 |
| Number of External Interrupts | 1 |
| Number of I/O Lines | 33 |
| Number of Serial I/Os | 1 |
| Number of Timers | 7 |
| 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 |
| Qualification Status | Not Qualified |
| RAM (bytes) | 192 |
| ROM (words) | 4096 |
| ROM Programmability | OTPROM |
| Screening Level | TS 16949 |
| Speed | 20MHz |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | J BEND |
| Terminal Pitch | 1.27mm |
| Terminal Position | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Plastic Leaded Chip Carrier |
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 PIC16C65B-20/L datasheet?
PIC16C65B-20/L Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for PIC16C65B-20/L?
Compatible alternatives and drop-in replacements for PIC16C65B-20/L:
RISC Microcontroller, 8-Bit, EPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
RISC Microcontroller, 8-Bit, OTPROM, PIC16 CPU, 20MHz, CMOS, PQCC44
Frequently Asked Questions
What is the maximum clock frequency of the PIC16C65B-20/L, and what throughput does this provide for an 8-bit control loop?
The PIC16C65B-20/L operates at a maximum clock frequency of 20 MHz, and since PIC16 architecture executes most instructions in 4 clock cycles, this yields an effective instruction rate of 5 MIPS. A simple digital control loop with 20 instructions executes in approximately 4 µs, which is fast enough for relay logic, keypad scanning, and display multiplexing in industrial control panels.
Since the PIC16C65B-20/L has no on-chip ADC, how should designers handle analog sensor inputs in a new design?
Because the PIC16C65B-20/L lacks an internal ADC, designers needing analog-to-digital conversion should add an external SPI or I2C ADC such as the MCP3208 (8-channel, 12-bit) to the design, communicating with the PIC via its serial port at up to 1 MHz. Alternatively, migrating to the PIC16F series, which includes on-chip 10-bit ADC channels, eliminates the external ADC and reduces BOM cost for new designs.
For legacy board repair, what advantage does the PIC16C65B-20/L's 44-pin PLCC package offer over a QFP alternative?
The 44-pin PLCC package of the PIC16C65B-20/L is socket-mountable using standard PLCC-44 ZIF sockets, allowing the microcontroller to be inserted and removed without soldering, which is invaluable for in-field firmware updates and replacement during maintenance of 1990s-era industrial equipment. A 44-pin QFP part, by contrast, requires rework station desoldering, typically taking 15 to 30 minutes per replacement versus under 1 minute for a socketed PLCC swap.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $8.1800 | $8.18 |
| 4+ | $7.2120 | $28.85 |
| 5+ | $7.1255 | $35.63 |
| 20+ | $5.4811 | $109.62 |
| 50+ | $5.1523 | $257.62 |
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