PIC18C658T-I/L Equivalent & Substitute Parts

Part Overview

The PIC18C658T-I/L is an 8-bit microcontroller from Microchip Technology's PIC® 18C series, featuring 32KB OTP program memory, 1.5KB RAM, and 52 I/O pins in a 68-PLCC package. The device integrates CANbus, I2C, SPI, and UART/USART connectivity with comprehensive peripheral support including PWM, watchdog timer, and brown-out detection. With a product status of Obsolete, sourcing this exact variant has become challenging. Identifying equivalent substitute parts ensures design continuity and maintains system functionality in applications requiring this microcontroller class.

Substiute Parts

PIC18C658T-I/L

Microchip TechnologyIn Stock: 1041PIC18C658T-I/L Datasheet

Current PartRFQ

PIC18C658-I/L

Microchip TechnologyIn Stock: 3711PIC18C658-I/L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC18C658T-I/L is determined by strict equivalence across core electrical and mechanical parameters. The substitute part PIC18C658-I/L maintains identical specifications in the following critical areas:

• Core processor architecture (PIC 8-bit)
• Clock speed (40MHz)
• Program memory capacity and type (32KB OTP)
• RAM configuration (1.5K x 8)
• I/O pin count (52)
• Supply voltage range (4.2V ~ 5.5V)
• Data converter specification (A/D 12x10b)
• Connectivity interfaces (CANbus, I2C, SPI, UART/USART)
• Peripheral feature set (Brown-out Detect/Reset, LVD, POR, PWM, WDT)
• Operating temperature range (-40°C ~ 85°C)
• Package form factor (68-LCC J-Lead)
• Compliance certifications (ROHS3, REACH Unaffected)

The substitute differs only in product status (Active vs. Obsolete) and packaging format (Tube vs. standard), with verified programmability confirmation.

Parameter Comparison

Engineering Selection Recommendations

The PIC18C658-I/L serves as a direct functional equivalent to the PIC18C658T-I/L. Selection of the substitute is supported by:

• Identical electrical specifications across all functional parameters
• Active product status ensuring continued availability and supply chain stability
• Verified programmability confirmation for the substitute part
• Full compliance with ROHS3 and REACH regulatory requirements
• Matching thermal and environmental operating specifications
• Identical package geometry and pin configuration for direct PCB compatibility

The transition from the obsolete PIC18C658T-I/L to the active PIC18C658-I/L maintains complete functional equivalence with improved supply chain accessibility.

Frequently Asked Questions (FAQ)

Q: Are the PIC18C658T-I/L and PIC18C658-I/L electrically identical?

A: Yes. Both devices share identical core processor architecture, clock speed, memory configuration, I/O count, voltage specifications, and peripheral feature sets. All functional parameters are equivalent.

Q: What is the difference between these two part numbers?

A: The primary differences are product status (Obsolete vs. Active) and packaging format (standard vs. Tube). The PIC18C658-I/L is the active production variant with verified programmability.

Q: Can I use PIC18C658-I/L as a direct replacement on existing PCBs designed for PIC18C658T-I/L?

A: Yes. Both devices use identical 68-LCC J-Lead package geometry with matching pin configurations and electrical characteristics, enabling direct PCB substitution.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain ROHS3 compliance and REACH Unaffected status with identical Moisture Sensitivity Level (MSL 3, 168 Hours).

Q: Why is the original part marked as Obsolete?

A: The PIC18C658T-I/L has reached end-of-life status. The PIC18C658-I/L represents the active production equivalent for continued system support and new designs.

Q: What is the significance of "Verified Programmable" for the substitute part?

A: This designation confirms that the PIC18C658-I/L has been tested and validated for programming operations, ensuring reliable firmware deployment and device configuration.