PIC16LC770T-E/SS Equivalent & Substitute Parts

Part Overview

The PIC16LC770T-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. This device is classified as Active product status with verified programmability through DiGi-Electronics. Finding equivalent or substitute parts becomes necessary when OTP memory limitations require reprogrammable alternatives, when inventory constraints occur, or when design requirements shift toward flash-based solutions with enhanced flexibility.

Substiute Parts

PIC16LC770T-E/SS

Microchip TechnologyIn Stock: 842PIC16LC770T-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 PIC16LC770T-E/SS is determined by the following critical parameters:

Core Compatibility Parameters:

• Identical core processor (PIC)
• Matching core size (8-Bit)
• Identical speed rating (20MHz)
• Identical program memory size (4.6KB / 2K x 14)
• Identical package type (20-SSOP)

Allowable Variations:

• Program memory type may change from OTP to FLASH, enabling reprogrammability
• Number of I/O pins may vary within the same package footprint
• EEPROM size may be added or modified
• RAM size may be adjusted
• Voltage supply range may be narrowed (subset of original range)
• Data converter specifications may differ

The PIC16F819-E/SS qualifies as a direct substitute based on these parameters, offering flash-based memory in place of OTP while maintaining all core compatibility requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the PIC16LC770T-E/SS and PIC16F819-E/SS maintain Active product status with ROHS3 compliance and REACH unaffected classification. The primary distinction lies in memory technology: the original part uses OTP (one-time programmable) memory, while the substitute employs FLASH memory, enabling field reprogramming and in-circuit updates.

Selection between these parts depends on application requirements:

• PIC16LC770T-E/SS is appropriate for fixed-code, high-volume production scenarios where OTP memory cost efficiency is prioritized and code updates are not required post-manufacturing.

• PIC16F819-E/SS is appropriate for development, prototyping, or applications requiring firmware updates, field modifications, or multiple programming cycles. The narrower voltage supply range (4V ~ 5.5V versus 2.5V ~ 5.5V) must be evaluated against system power requirements.

Both devices are verified as programmable through DiGi-Electronics and maintain identical core architecture, speed, package footprint, and peripheral feature sets.

Frequently Asked Questions (FAQ)

Q: Can PIC16F819-E/SS directly replace PIC16LC770T-E/SS in existing designs?

A: Direct replacement is possible with consideration of voltage supply range. The PIC16F819-E/SS operates within 4V ~ 5.5V, which is a subset of the original part's 2.5V ~ 5.5V range. If the application operates below 4V, the substitute is not compatible. Pin-to-pin compatibility is maintained within the 20-SSOP package, though the PIC16F819-E/SS provides one additional I/O pin (16 versus 15).

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

A: FLASH memory enables reprogramming without device replacement, supporting firmware updates, design iterations, and field modifications. OTP memory in the original part allows only single programming.

Q: Are there differences in peripheral functionality?

A: Both parts provide identical peripheral sets: Brown-out Detect/Reset, POR, PWM, and WDT. Connectivity via I2C and SPI is equivalent. Data converter specifications differ (A/D 6x12b versus A/D 5x10b), which must be evaluated for analog signal processing requirements.

Q: Does packaging remain identical?

A: Yes. Both parts use 20-SSOP surface mount packaging with identical footprint dimensions (0.209", 5.30mm width), ensuring PCB layout compatibility.

Q: Are both parts currently available?

A: Both parts maintain Active product status. Inventory availability should be confirmed with the supplier, as stock levels vary.