PIC17C44/JW Equivalent & Substitute Parts

Part Overview

The PIC17C44/JW is an 8-bit microcontroller from Microchip Technology's PIC® 17C series, featuring 16KB EPROM with UV erasability in a 40-pin CERDIP package. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The UV-erasable EPROM variant distinguishes this part from OTP (One-Time Programmable) alternatives within the same product family.

Substiute Parts

PIC17C44/JW

Microchip TechnologyIn Stock: 753PIC17C44/JW Datasheet

Current PartRFQ

PIC17C44-16/P

Microchip TechnologyIn Stock: 4185PIC17C44-16/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PIC17C44/JW is determined by the following critical parameters:

• Core Architecture: PIC 8-bit processor compatibility
• Memory Configuration: 16KB program memory capacity (8K x 16 organization)
• I/O Count: 33 I/O pins
• Supply Voltage: 4.5V ~ 6V operating range
• Package Compatibility: 40-pin DIP form factor with 0.600" (15.24mm) pitch
• Thermal Range: 0°C ~ 70°C operating temperature

The PIC17C44-16/P qualifies as a substitute based on matching core architecture, memory size, I/O configuration, voltage specifications, and thermal operating range. The primary difference is the program memory type (OTP versus UV-erasable EPROM) and maximum clock speed (16MHz versus 33MHz), which represent functional trade-offs rather than incompatibilities for most applications.

Parameter Comparison

Engineering Selection Recommendations

The PIC17C44-16/P is the designated manufacturer substitute for the obsolete PIC17C44/JW. Selection between these parts depends on specific application requirements:

Choose PIC17C44/JW if UV-erasable EPROM capability is mandatory for development or field reprogramming workflows, and 33MHz operation is required.

Choose PIC17C44-16/P for production designs where OTP programming is acceptable, RoHS3 compliance is required, and the 16MHz maximum speed meets application timing specifications. This part is actively manufactured and maintains full inventory availability.

Both devices share identical pinout, I/O configuration, memory organization, and voltage specifications, enabling direct socket substitution when memory programming method and speed requirements are compatible.

Frequently Asked Questions (FAQ)

Q: Can PIC17C44-16/P directly replace PIC17C44/JW in existing designs?

A: Direct socket replacement is possible if the application does not require UV-erasable EPROM reprogramming capability and operates within the 16MHz speed specification. Pinout, I/O count, memory size, and voltage requirements are identical.

Q: What is the primary functional difference between these parts?

A: The PIC17C44/JW uses UV-erasable EPROM for program memory, allowing field reprogramming through UV exposure and electrical erasure. The PIC17C44-16/P uses OTP (One-Time Programmable) memory, which cannot be erased after initial programming. Additionally, the PIC17C44/JW supports 33MHz operation while the PIC17C44-16/P is rated to 16MHz maximum.

Q: Are the package dimensions identical?

A: Both parts use 40-pin DIP packages with 0.600" (15.24mm) pitch. The PIC17C44/JW is packaged as CERDIP with a quartz window for UV erasure access, while the PIC17C44-16/P is standard PDIP. Physical footprint and pinout are compatible for PCB mounting.

Q: What compliance differences exist between these parts?

A: The PIC17C44-16/P is ROHS3 compliant, while the PIC17C44/JW is RoHS non-compliant. Both are REACH unaffected and share identical HTSUS classification.

Q: Why is the PIC17C44/JW classified as obsolete?

A: Microchip Technology has discontinued this UV-erasable EPROM variant in favor of OTP and flash-based alternatives within the PIC microcontroller portfolio. The PIC17C44-16/P represents the active production substitute.