PIC16LC505-04I/P Equivalent & Substitute Parts

Part Overview

The PIC16LC505-04I/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 1.5KB OTP (One-Time Programmable) memory and operating at 4MHz. This device is designed for embedded applications requiring low-cost, low-power microcontroller solutions with basic I/O capabilities. The part maintains Active product status with verified programmability through DiGi-Electronics. Finding equivalent or substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when higher speed operation is needed, or when inventory constraints necessitate alternative sourcing.

Substiute Parts

PIC16LC505-04I/P

Microchip TechnologyIn Stock: 864PIC16LC505-04I/P Datasheet

Current PartRFQ

PIC16F505-I/P

Microchip TechnologyIn Stock: 2067PIC16F505-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC505-04I/P is determined by the following critical parameters:

• Core Processor & Architecture: Must be PIC processor family to maintain instruction set compatibility
• Core Size: Must remain 8-Bit
• Program Memory Size: Must be 1.5KB (1K x 12) to ensure code compatibility
• RAM Size: Must be 72 x 8 to support equivalent data storage
• Package / Case: Must be 14-DIP (0.300", 7.62mm) for mechanical and electrical pin compatibility
• Operating Temperature Range: Must support -40°C ~ 85°C minimum
• Voltage Supply Range: Must support the required supply voltage window

The PIC16F505-I/P qualifies as a manufacturer-recommended substitute because it maintains identical core architecture, memory capacity, pin configuration, and operating specifications while offering FLASH memory (reprogrammable) instead of OTP, enabling multiple programming cycles and higher operational speed.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16LC505-04I/P and PIC16F505-I/P maintain Active product status with full RoHS3 compliance and REACH unaffected designation, ensuring regulatory compliance for current and future applications. The PIC16F505-I/P is the manufacturer-recommended substitute, offering superior reprogrammability through FLASH memory technology while maintaining identical pin configuration and memory architecture. Selection between these parts should be based on application requirements: the PIC16LC505-04I/P remains suitable for fixed-code, cost-optimized applications, while the PIC16F505-I/P provides flexibility for development, field updates, and production scenarios requiring multiple programming cycles. The one-I/O reduction in the PIC16F505-I/P (11 versus 12) must be evaluated against specific application pin requirements.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F505-I/P directly replace the PIC16LC505-04I/P in existing designs?

A: Yes, for most applications. Both devices share identical 14-DIP package pinout, memory architecture (1.5KB program, 72x8 RAM), and peripheral set (POR, WDT). The PIC16F505-I/P has one fewer I/O pin (11 versus 12), which must be verified against your specific application requirements. Code written for the PIC16LC505-04I/P will execute on the PIC16F505-I/P.

Q: What is the primary functional difference between these parts?

A: The PIC16LC505-04I/P uses OTP (One-Time Programmable) memory, allowing a single programming cycle. The PIC16F505-I/P uses FLASH memory, enabling unlimited reprogramming cycles. Additionally, the PIC16F505-I/P operates at 20MHz versus 4MHz for the PIC16LC505-04I/P.

Q: Are there voltage supply compatibility concerns?

A: The PIC16F505-I/P supports a slightly lower minimum voltage (2V versus 2.5V), providing broader supply range compatibility. Both devices support the standard 5V logic level and operate across the same -40°C to 85°C temperature range.

Q: Does the oscillator type difference affect substitution?

A: The PIC16LC505-04I/P requires an external oscillator, while the PIC16F505-I/P includes an internal oscillator option. This represents a design advantage for the substitute part, potentially reducing component count and PCB complexity.

Q: What compliance certifications apply to both parts?

A: Both devices are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components in most markets.