PIC16LC770-E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC770-E/SS is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP (One-Time Programmable) memory, 20MHz operation, and 15 I/O pins in a 20-SSOP surface mount package. This device is actively produced and widely used in embedded applications requiring low-cost, compact microcontroller solutions.

Finding equivalent or substitute parts becomes necessary when the original part reaches end-of-life status, inventory constraints occur, or design requirements shift toward reprogrammable memory technologies. The PIC16LC770-E/SS can be substituted with parts that maintain functional compatibility while potentially offering enhanced features such as FLASH memory for field reprogramming capability.

Substiute Parts

PIC16LC770-E/SS

Microchip TechnologyIn Stock: 810PIC16LC770-E/SS Datasheet

Current PartRFQ

PIC16F819-E/SS

Microchip TechnologyIn Stock: 1013PIC16F819-E/SS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC770-E/SS is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Core processor family: PIC
• Core size: 8-Bit
• Operating speed: 20MHz
• Program memory capacity: 4.6KB (2K x 14)
• Package type: 20-SSOP
• Mounting type: Surface Mount
• Operating temperature range: -40°C ~ 125°C

Allowable Variations:

• Program memory type: OTP to FLASH (FLASH provides reprogrammability while maintaining code storage capacity)
• Voltage supply range: Narrower ranges acceptable if minimum meets or exceeds 2.5V and maximum meets or exceeds 5.5V
• Number of I/O pins: Equal or greater than 15
• EEPROM availability: Addition of EEPROM is acceptable
• Data converter specifications: Variations acceptable if functional requirements are met

The PIC16F819-E/SS qualifies as a direct substitute based on these criteria, offering identical core architecture, memory capacity, speed, and package while upgrading the program memory from OTP to FLASH technology.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F819-E/SS is a qualified substitute for the PIC16LC770-E/SS based on the following engineering factors:

Functional Equivalence: Both devices share identical core architecture, instruction set, memory capacity, speed rating, and I/O configuration. Code written for the PIC16LC770-E/SS executes without modification on the PIC16F819-E/SS.

Compliance and Certification: Both parts maintain ROHS3 compliance, identical MSL ratings, and equivalent regulatory status (ECCN: EAR99, HTSUS: 8542.31.0001). No compliance barriers exist for substitution.

Memory Technology Upgrade: The transition from OTP to FLASH memory in the substitute part provides enhanced flexibility for development, testing, and field updates without requiring component replacement. This represents a functional improvement while maintaining backward compatibility.

Supply Chain Continuity: Both devices are actively produced by Microchip Technology with confirmed inventory availability. The substitute part ensures design continuity and long-term component availability.

Voltage Supply Consideration: The PIC16F819-E/SS operates within a narrower voltage range (4V ~ 5.5V) compared to the original part (2.5V ~ 5.5V). Applications requiring operation below 4V must retain the PIC16LC770-E/SS or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F819-E/SS be used as a direct replacement in existing designs using the PIC16LC770-E/SS?

A: Yes, for applications operating within the 4V ~ 5.5V supply range. The substitute part maintains identical pinout, package, core architecture, and instruction set. No PCB modifications are required. Applications requiring operation below 4V must use the original part.

Q: What is the primary advantage of substituting to the PIC16F819-E/SS?

A: The PIC16F819-E/SS uses FLASH memory instead of OTP, allowing firmware to be reprogrammed multiple times without component replacement. This eliminates the need to discard parts during development and testing phases.

Q: Are there any firmware compatibility issues between the two parts?

A: No. Both devices use identical PIC instruction sets and peripheral configurations. Firmware compiled for the PIC16LC770-E/SS executes without modification on the PIC16F819-E/SS.

Q: Does the PIC16F819-E/SS provide additional I/O pins?

A: The substitute part provides 16 I/O pins compared to 15 on the original. This additional pin does not create compatibility issues and may provide design flexibility for future enhancements.

Q: What is the significance of the EEPROM in the PIC16F819-E/SS?

A: The PIC16F819-E/SS includes 256 x 8 bytes of EEPROM for non-volatile data storage. The original part lacks this feature. Applications not requiring EEPROM functionality are unaffected by this addition.

Q: Are both parts available in the same package and mounting type?

A: Yes. Both the PIC16LC770-E/SS and PIC16F819-E/SS are supplied in 20-SSOP surface mount packages with identical physical dimensions (0.209", 5.30mm width).

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (unlimited) for both devices.