PIC17C44T-25I/PQ Equivalent & Substitute Parts

Part Overview

The PIC17C44T-25I/PQ is an 8-bit microcontroller from Microchip Technology's PIC® 17C series, featuring 16KB OTP program memory, 454 x 8 bytes of RAM, and 33 I/O pins in a 44-MQFP package. With a 25MHz operating frequency and integrated peripherals including UART/USART, PWM, WDT, and POR, this device is designed for embedded control applications requiring moderate processing capability and external oscillator support.

The PIC17C44T-25I/PQ is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when system redesigns require active production-status alternatives with identical or compatible electrical and mechanical specifications.

Substiute Parts

PIC17C44T-25I/PQ

Microchip TechnologyIn Stock: 1080PIC17C44T-25I/PQ Datasheet

Current PartRFQ

PIC17C44-25I/PQ

Microchip TechnologyIn Stock: 1050PIC17C44-25I/PQ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PIC17C44T-25I/PQ is determined by strict equivalence across the following critical parameters:

• Core Processor Architecture: PIC processor family
• Core Size: 8-Bit processing capability
• Operating Frequency: 25MHz clock speed
• Program Memory: 16KB OTP configuration
• RAM Capacity: 454 x 8 byte organization
• I/O Pin Count: 33 pins minimum
• Supply Voltage Range: 4.5V ~ 6V compatibility
• Package Type: 44-QFP surface mount form factor
• Peripheral Set: UART/USART, PWM, WDT, POR functionality
• Temperature Range: -40°C ~ 85°C operating window

The substitute part PIC17C44-25I/PQ meets all these criteria and represents a direct functional equivalent with identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The PIC17C44-25I/PQ is the direct substitute for the PIC17C44T-25I/PQ. Both components are manufactured by Microchip Technology and share identical electrical specifications, memory configuration, I/O architecture, and peripheral functionality. The substitute part maintains active production status, ensuring long-term availability and supply chain reliability.

Both parts comply with ROHS3 requirements and carry REACH Unaffected status, meeting current environmental and regulatory standards. The MSL rating of 3 (168 Hours) applies to both components, requiring equivalent moisture control during storage and handling.

Selection between these parts is determined by availability and supply chain requirements rather than technical performance differences. The substitute part is recommended for new designs or when the obsolete main part cannot be sourced.

Frequently Asked Questions (FAQ)

Q: Are PIC17C44T-25I/PQ and PIC17C44-25I/PQ pin-for-pin compatible?

A: Yes. Both components use the 44-QFP package with identical pin assignments, I/O configuration, and signal definitions. Direct PCB substitution is possible without layout modifications.

Q: Can the PIC17C44-25I/PQ replace the PIC17C44T-25I/PQ in existing applications?

A: Yes. The substitute part maintains identical core processor architecture, clock frequency, memory organization, supply voltage range, and operating temperature specifications. Firmware and hardware designs require no modification.

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

A: The primary difference is product status. The PIC17C44T-25I/PQ is obsolete, while the PIC17C44-25I/PQ maintains active production status. All electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the PIC17C44T-25I/PQ and PIC17C44-25I/PQ are ROHS3 compliant and carry REACH Unaffected status.

Q: What is the MSL rating for these components?

A: Both parts carry an MSL rating of 3 with a 168-hour floor life. Standard moisture control procedures during storage and handling apply to both components.

Q: Can I use either part interchangeably in my design?

A: Yes. From an engineering perspective, these parts are functionally equivalent. Selection should be based on current availability and supply chain considerations.