PIC16LC717-I/P Equivalent & Substitute Parts

Part Overview

The PIC16LC717-I/P is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, designed for embedded applications requiring low-power operation and basic I/O control. This device features 4.6KB of OTP (One-Time Programmable) memory, 15 I/O pins, and operates across a 2.5V to 5.5V supply range. The product maintains Active status with verified programmability through DiGi-Electronics. Substitute parts are identified when design requirements necessitate enhanced memory capacity, expanded I/O capabilities, or alternative memory technologies while maintaining core processor compatibility and operational parameters.

Substiute Parts

PIC16LC717-I/P

Microchip TechnologyIn Stock: 701PIC16LC717-I/P Datasheet

Current PartRFQ

PIC16F690-I/P

Microchip TechnologyIn Stock: 10142PIC16F690-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16LC717-I/P is determined by the following criteria:

Core Compatibility Requirements:

• Identical core processor architecture (PIC)
• Matching core size (8-Bit)
• Equivalent or superior clock speed (20MHz minimum)
• Compatible voltage supply range (minimum 2.5V ~ 5.5V)
• Matching operating temperature range (-40°C ~ 85°C)
• Through-hole mounting configuration
• Active product status with verified programmability

Allowable Variations:

• Program memory type may transition from OTP to FLASH, provided total capacity meets or exceeds original specification
• Program memory size may increase beyond 4.6KB
• Number of I/O pins may increase beyond 15
• Package pin count may increase (18-DIP to 20-DIP acceptable)
• EEPROM availability is permissible as an enhancement
• Data converter specifications may be enhanced

The PIC16F690-I/P qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The PIC16F690-I/P serves as the qualified substitute for the PIC16LC717-I/P based on the following engineering criteria:

Processor Architecture Alignment: Both devices utilize identical PIC core architecture with 8-bit processing at 20MHz, ensuring instruction set compatibility and functional equivalence at the processor level.

Memory Technology Enhancement: The transition from OTP to FLASH memory in the PIC16F690-I/P provides increased program memory capacity (7KB versus 4.6KB) while maintaining the same 14-bit word width. FLASH technology permits field reprogramming, offering operational flexibility not available with OTP devices.

Electrical Compatibility: The PIC16F690-I/P operates within an expanded voltage range (2V ~ 5.5V) that encompasses the original specification (2.5V ~ 5.5V), ensuring compatibility across all original operating conditions. RAM capacity remains constant at 256 x 8 bytes.

I/O and Peripheral Enhancement: The substitute provides 18 I/O pins compared to 15 on the original, with enhanced analog-to-digital conversion capability (12 channels at 10-bit resolution versus 6 channels). These enhancements maintain backward compatibility while expanding application scope.

Compliance and Status: Both devices maintain Active product status, ROHS3 compliance, and verified programmability through DiGi-Electronics. Regulatory classifications (ECCN: EAR99, HTSUS: 8542.31.0001) remain identical.

Package Consideration: The PIC16F690-I/P utilizes a 20-DIP package compared to the 18-DIP original. PCB layout modifications are required to accommodate the additional pins, but the 0.300" (7.62mm) pitch remains consistent.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F690-I/P directly replace the PIC16LC717-I/P without code modifications?

A: The PIC16F690-I/P maintains instruction set compatibility with the PIC16LC717-I/P at the core processor level. Existing firmware compiled for the PIC16LC717-I/P will execute on the PIC16F690-I/P. However, applications utilizing the additional I/O pins or enhanced analog-to-digital converters require firmware updates to leverage these capabilities. No modifications are necessary for basic functional replacement.

Q: What are the package differences between these devices?

A: The PIC16LC717-I/P uses an 18-DIP package, while the PIC16F690-I/P uses a 20-DIP package. Both maintain 0.300" (7.62mm) pitch spacing. PCB redesign is required to accommodate the two additional pins. Pin mapping must be verified against device datasheets to ensure correct signal routing.

Q: Why does the PIC16F690-I/P have a lower minimum voltage specification?

A: The PIC16F690-I/P operates from 2V minimum, compared to 2.5V for the PIC16LC717-I/P. This represents an enhancement in low-voltage capability. Applications designed for the original 2.5V ~ 5.5V range will operate without modification on the substitute device.

Q: What is the significance of FLASH versus OTP memory?

A: OTP (One-Time Programmable) memory in the PIC16LC717-I/P permits a single programming cycle during manufacturing. FLASH memory in the PIC16F690-I/P allows multiple erase and reprogram cycles, enabling field updates and development flexibility. For production applications requiring fixed firmware, both technologies are functionally equivalent.

Q: Are the connectivity and peripheral features compatible?

A: Both devices support I2C and SPI connectivity. The PIC16F690-I/P adds UART/USART capability. Both include Brown-out Detect/Reset, Power-On Reset (POR), PWM, and Watchdog Timer (WDT) functions. The substitute provides enhanced peripheral integration without removing any original features.

Q: What inventory considerations apply to this substitution?

A: The PIC16LC717-I/P maintains 686 pieces in stock, while the PIC16F690-I/P has 10,100 pieces available. Both are supplied as new original components with verified programmability status.