PIC16LC620A-04I/SO Equivalent & Substitute Parts

Part Overview

The PIC16LC620A-04I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, designed for embedded applications requiring low-power operation and basic control functionality. This device features 896B of OTP (One-Time Programmable) memory, 13 I/O pins, and operates at 4MHz with a supply voltage range of 2.5V to 5.5V. The part is currently active in production and widely available with 704 units in stock. Finding equivalent or substitute parts may be necessary due to design upgrades, end-of-life considerations, or application-specific requirements for enhanced memory, speed, or programmability.

Substiute Parts

PIC16LC620A-04I/SO

Microchip TechnologyIn Stock: 715PIC16LC620A-04I/SO Datasheet

Current PartRFQ

PIC16F627A-I/SO

Microchip TechnologyIn Stock: 8751PIC16F627A-I/SO Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC620A-04I/SO is determined by compatibility across the following critical parameters:

• Package Compatibility: Both main and substitute parts must use the 18-SOIC surface mount package to ensure PCB-level compatibility without redesign.
• Core Architecture: All parts must be based on the PIC 8-bit core processor to maintain instruction set compatibility and firmware portability.
• Supply Voltage Range: Substitute parts must support the application's operating voltage window; the main part operates at 2.5V ~ 5.5V.
• Operating Temperature Range: Substitute parts must meet or exceed the -40°C ~ 85°C operating temperature specification.
• Compliance Standards: All parts must maintain ROHS3 compliance and REACH unaffected status for regulatory consistency.

The PIC16F627A-I/SO qualifies as a direct substitute based on these parameters. While it offers enhanced specifications (higher speed, FLASH memory, increased I/O and RAM), it maintains full compatibility with the core selection criteria and operates within the same thermal and voltage envelope.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F627A-I/SO is qualified as a direct substitute for the PIC16LC620A-04I/SO based on package compatibility, core architecture alignment, and regulatory compliance. Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring consistency with supply chain and environmental requirements.

The substitute part offers performance enhancements including 5x higher clock speed (20MHz vs. 4MHz), FLASH memory instead of OTP for field reprogrammability, increased RAM (224 x 8 vs. 96 x 8), additional I/O pins (16 vs. 13), and integrated EEPROM (128 x 8). These enhancements do not introduce compatibility issues at the package or core instruction set level.

Both parts are currently in active production status with substantial inventory availability, ensuring supply chain reliability for new designs or replacement applications.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F627A-I/SO be used as a direct replacement for the PIC16LC620A-04I/SO without PCB modifications?

A: Yes. Both devices use the 18-SOIC package with identical pinout and physical dimensions (0.295", 7.50mm width). No PCB layout changes are required for mechanical or electrical integration.

Q: What are the key differences between OTP and FLASH memory in these devices?

A: The PIC16LC620A-04I/SO uses OTP (One-Time Programmable) memory, which can be programmed once during manufacturing. The PIC16F627A-I/SO uses FLASH memory, which is field-reprogrammable, allowing firmware updates after deployment without replacing the component.

Q: Does the PIC16F627A-I/SO support the same instruction set as the PIC16LC620A-04I/SO?

A: Both devices are based on the PIC 8-bit core architecture and share compatible instruction sets. Firmware written for the PIC16LC620A-04I/SO will execute on the PIC16F627A-I/SO without modification, though the substitute part's enhanced resources may enable additional functionality.

Q: Are there voltage supply considerations when substituting these parts?

A: The PIC16LC620A-04I/SO operates at 2.5V ~ 5.5V, while the PIC16F627A-I/SO operates at 3V ~ 5.5V. Applications requiring operation below 3V must retain the original part. For applications operating at 3V or above, the substitute part is fully compatible.

Q: What is the impact of the speed difference (4MHz vs. 20MHz)?

A: The PIC16F627A-I/SO operates at 5x higher clock speed. This does not create compatibility issues but may require firmware timing adjustments if the original design relied on specific clock-dependent delays. Applications not dependent on precise timing will function identically.

Q: Are both parts suitable for low-power applications?

A: Both devices support low-power operation through integrated Brown-out Detect/Reset, POR (Power-On Reset), and WDT (Watchdog Timer) peripherals. The PIC16F627A-I/SO's higher speed capability may offer improved power efficiency in certain applications through faster task completion and reduced active time.