PIC16LC622A-04E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC622A-04E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP program memory and 13 I/O pins in a 20-SSOP surface mount package. The device operates at 4MHz with a supply voltage range of 2.5V to 5.5V and includes integrated brown-out detection, power-on reset, and watchdog timer functionality. Currently in active product status with 954 units in stock, this microcontroller is suitable for cost-sensitive embedded applications requiring OTP memory.

Substitute parts are necessary when OTP memory limitations require reprogramming capability, when higher processing speed is needed, or when enhanced peripheral integration becomes a design requirement.

Substiute Parts

PIC16LC622A-04E/SS

Microchip TechnologyIn Stock: 1038PIC16LC622A-04E/SS Datasheet

Current PartRFQ

PIC16F628A-E/SS

Microchip TechnologyIn Stock: 3828PIC16F628A-E/SS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The PIC16F628A-E/SS qualifies as a direct substitute based on the following alignment criteria:

Matching Parameters:

• Core processor architecture: PIC (8-bit)
• Program memory size: 4.6KB (2K x 14) — identical capacity
• Package type: 20-SSOP — identical form factor and pinout compatibility
• Operating temperature range: -40°C ~ 125°C — identical specification
• Mounting type: Surface mount — identical assembly method
• RoHS3 compliance: Both parts meet the same environmental standard

Key Differences Enabling Substitution:

• Program memory type: FLASH (reprogrammable) versus OTP (one-time programmable)
• Speed: 20MHz versus 4MHz — higher performance capability
• I/O count: 16 versus 13 — additional I/O pins available
• RAM: 224 x 8 versus 128 x 8 — increased working memory
• Peripherals: Includes UART/USART and PWM in addition to base peripherals
• Voltage supply minimum: 3V versus 2.5V — slightly higher minimum threshold

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16LC622A-04E/SS and PIC16F628A-E/SS maintain active product status with Microchip Technology and comply with ROHS3 environmental standards. The PIC16F628A-E/SS is recommended for applications requiring field reprogramming capability, higher clock speeds, or expanded I/O and memory resources. The PIC16LC622A-04E/SS remains appropriate for fixed-function, cost-optimized designs where OTP memory and lower speed operation are acceptable. Both devices are suitable for production deployment based on compliance certifications and manufacturer support status.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F628A-E/SS directly replace the PIC16LC622A-04E/SS in existing designs?

A: Yes, from a package and pinout perspective. The 20-SSOP form factor and pin configuration are identical. However, firmware must be validated for the higher clock speed (20MHz versus 4MHz) and expanded peripheral set of the PIC16F628A-E/SS.

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

A: The main difference is program memory type. The PIC16LC622A-04E/SS uses OTP (one-time programmable) memory, while the PIC16F628A-E/SS uses FLASH memory, allowing unlimited reprogramming during development and field updates.

Q: Are there voltage supply compatibility concerns?

A: The PIC16F628A-E/SS has a minimum supply voltage of 3V, compared to 2.5V for the PIC16LC622A-04E/SS. Designs operating below 3V must retain the original part.

Q: Do the additional I/O pins on the PIC16F628A-E/SS require circuit modifications?

A: No. The PIC16F628A-E/SS provides 16 I/O pins versus 13 on the original part, but unused pins can remain unconnected. Existing circuit connections remain valid.

Q: Are both parts available in the same packaging options?

A: Both are supplied in 20-SSOP surface mount packages with identical physical dimensions (0.209" width, 5.30mm). The PIC16F628A-E/SS is available in tube packaging.