PIC16C717-I/SO Equivalent & Substitute Parts

Part Overview

The PIC16C717-I/SO is an 8-bit microcontroller from Microchip Technology's PIC® 16C series, featuring 4.6KB OTP program memory, 256 x 8 bytes of RAM, and 15 I/O pins in an 18-SOIC surface mount package. The device operates at 20MHz with integrated peripherals including PWM, watchdog timer, and brown-out detection across a 4V to 5.5V supply range. This part is currently active in production. Equivalent and substitute parts are identified when design requirements allow for enhanced capabilities, improved memory configurations, or alternative memory technologies while maintaining core functional compatibility.

Substiute Parts

PIC16C717-I/SO

Microchip TechnologyIn Stock: 2493PIC16C717-I/SO Datasheet

Current PartRFQ

PIC16F690-I/SO

Microchip TechnologyIn Stock: 35321PIC16F690-I/SO Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC16C717-I/SO is based on maintaining compatibility across the following critical parameters:

Core Architecture Compatibility: Both the main part and substitute must use the PIC core processor architecture and 8-bit instruction set.

Operating Specifications: Identical clock speed (20MHz) and overlapping or extended operating temperature range (-40°C ~ 85°C).

Memory Configuration: The substitute must provide equal or greater program memory capacity and equal or greater RAM allocation to ensure existing firmware can execute without modification.

Supply Voltage: The substitute must operate within or extend the supply voltage range (minimum 4V, maximum 5.5V).

Package and Pinout: Surface mount packaging with compatible pin count and I/O configuration to allow direct board-level substitution.

Peripheral Feature Set: Presence of core peripherals including I2C, SPI connectivity, PWM, watchdog timer, and brown-out detection.

The PIC16F690-I/SO qualifies as a direct substitute based on these criteria, offering enhanced FLASH memory technology, extended I/O capability, and broader supply voltage tolerance while maintaining full architectural compatibility.

Parameter Comparison

Engineering Selection Recommendations

PIC16F690-I/SO as Primary Substitute:

The PIC16F690-I/SO is qualified as a direct substitute for the PIC16C717-I/SO based on active product status and full regulatory compliance. Both devices maintain ROHS3 compliance and MSL Level 1 rating, ensuring equivalent environmental and handling requirements.

The substitute offers measurable advantages: FLASH memory technology replaces OTP, providing field reprogrammability; program memory capacity doubles from 4.6KB to 7KB; RAM remains equivalent at 256 x 8 bytes; and supply voltage tolerance extends to 2V minimum, broadening operational flexibility. The 20-SOIC package accommodates three additional I/O pins (18 versus 15), and integrated UART/USART connectivity supplements the existing I2C and SPI interfaces.

Both devices share identical core clock speed (20MHz), operating temperature range (-40°C ~ 85°C), and peripheral feature set including PWM, watchdog timer, and brown-out detection. The substitute's A/D converter specification increases from 6x10b to 12x10b, providing enhanced analog measurement capability.

Board-level integration requires PCB layout evaluation due to package size difference (18-SOIC to 20-SOIC) and pin count increase. Firmware compatibility is maintained through identical instruction set architecture and peripheral register structure.

Frequently Asked Questions (FAQ)

Q: Can the PIC16F690-I/SO directly replace the PIC16C717-I/SO on existing PCBs?

A: Direct socket replacement is not possible due to package differences: the main part uses 18-SOIC while the substitute uses 20-SOIC. PCB redesign is required to accommodate the larger package and additional pins. However, firmware compatibility is maintained through identical PIC core architecture.

Q: What is the primary advantage of substituting to the PIC16F690-I/SO?

A: The substitute provides FLASH memory technology, enabling field reprogrammability compared to the OTP (one-time programmable) memory of the main part. Program memory capacity also doubles from 4.6KB to 7KB, and the device includes integrated EEPROM (256 x 8 bytes) not present in the original.

Q: Are there supply voltage compatibility concerns?

A: The main part operates within 4V to 5.5V. The substitute extends the lower limit to 2V, providing broader supply voltage tolerance. Applications operating at the main part's minimum 4V threshold remain fully compatible with the substitute.

Q: How do the I/O pin counts differ?

A: The PIC16C717-I/SO provides 15 I/O pins in an 18-SOIC package. The PIC16F690-I/SO provides 18 I/O pins in a 20-SOIC package, offering three additional I/O resources for expanded application requirements.

Q: Are both devices equally available?

A: Both devices maintain active product status from Microchip Technology. Inventory availability varies; the substitute currently shows higher stock levels (35,220 pcs versus 2,392 pcs for the main part).

Q: What connectivity differences exist between the two devices?

A: The main part integrates I2C and SPI interfaces. The substitute adds UART/USART serial communication capability, enabling additional communication protocol options without external interface circuitry.

Q: Do both devices meet the same regulatory and compliance standards?

A: Yes. Both devices are ROHS3 compliant, carry MSL Level 1 (unlimited moisture sensitivity), and are REACH unaffected with identical ECCN and HTSUS classifications.