XC17V16PC44C Equivalent & Substitute Parts

Part Overview

The XC17V16PC44C is an obsolete One-Time Programmable (OTP) memory integrated circuit manufactured by AMD. This 16 Megabit PROM operates at 3.3V supply voltage with a commercial temperature range of 0°C to 70°C and is housed in a 44-pin LCC (J-Lead) surface mount package. Due to its obsolete product status, equivalent substitute parts are necessary for system maintenance, legacy equipment repair, and design continuity in applications where this component is specified.

Key Parameters

Parameter	Value
Memory Size	16 Mb
Programmable Type	OTP
Voltage Supply Range	3.0V ~ 3.6V
Operating Temperature Range	0°C ~ 70°C
Mounting Type	Surface Mount
Package Type	44-pin LCC (J-Lead)
Moisture Sensitivity Level	MSL 3 (168 Hours)
RoHS Compliance	Non-compliant

Substitute Part Grouping Explanation

Substitution of the XC17V16PC44C is determined by the following critical parameters:

Memory Capacity: The substitute part must provide 16 Megabit memory capacity to maintain functional equivalence in data storage applications.

Supply Voltage Compatibility: The substitute must operate within or overlap the 3.0V to 3.6V supply range. The AT17F16-30TQC operates at 2.97V to 3.63V, which provides full compatibility with the original specification.

Operating Temperature Range: The substitute must support the 0°C to 70°C commercial temperature range to ensure operation in equivalent thermal environments.

Mounting and Package Considerations: While the XC17V16PC44C uses a 44-pin LCC package and the AT17F16-30TQC uses a 44-pin TQFP package, both are surface mount technologies with 44-pin configurations. Package substitution requires PCB layout and footprint verification.

Programmable Technology: The XC17V16PC44C is OTP (One-Time Programmable), while the AT17F16-30TQC is FLASH-based. FLASH technology provides reprogrammability, which is functionally superior for applications requiring multiple programming cycles.

Compliance and Certification: Both parts share identical RoHS non-compliance status, REACH unaffected status, and equivalent HTSUS classification, ensuring regulatory consistency.

Parameter Comparison

Parameter	XC17V16PC44C (AMD)	AT17F16-30TQC (Microchip Technology)	Compatibility
Memory Size	16 Mb	16 Mb	Equivalent
Programmable Type	OTP	FLASH	Functionally Compatible (FLASH is reprogrammable)
Voltage Supply Range	3.0V ~ 3.6V	2.97V ~ 3.63V	Overlapping (Full compatibility)
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	44-LCC (J-Lead)	44-TQFP	Different footprint (requires PCB verification)
Moisture Sensitivity Level	MSL 3 (168 Hours)	MSL 3 (168 Hours)	Equivalent
RoHS Status	Non-compliant	Non-compliant	Equivalent
Product Status	Obsolete	Obsolete	Both obsolete

Engineering Selection Recommendations

The AT17F16-30TQC from Microchip Technology is a functional substitute for the XC17V16PC44C based on the following engineering criteria:

Memory Capacity and Voltage Compatibility: Both parts provide 16 Megabit capacity with overlapping supply voltage ranges (2.97V to 3.63V encompasses the original 3.0V to 3.6V specification), ensuring electrical compatibility in 3.3V systems.

Temperature Range Alignment: Both parts operate across the identical 0°C to 70°C commercial temperature range, maintaining thermal performance equivalence.

Regulatory and Compliance Consistency: Both parts share non-compliant RoHS status and REACH unaffected classification, ensuring no compliance conflicts in legacy system applications.

Programmable Technology Advantage: The AT17F16-30TQC employs FLASH technology, which provides reprogrammability compared to the OTP technology of the original part. This represents a functional improvement for applications requiring multiple programming cycles or field updates.

Package Substitution Requirement: The transition from 44-pin LCC (J-Lead) to 44-pin TQFP requires physical PCB layout verification. Pin-to-pin electrical compatibility must be confirmed against the original schematic and PCB footprint design.

Frequently Asked Questions (FAQ)

Q: Can the AT17F16-30TQC directly replace the XC17V16PC44C without PCB modifications?

A: Electrical substitution is valid based on memory capacity, voltage range, and temperature specifications. However, the package change from 44-LCC to 44-TQFP requires PCB footprint verification. Direct socket replacement is not possible without PCB redesign.

Q: What is the primary difference between OTP and FLASH programmable types?

A: OTP (One-Time Programmable) allows a single programming cycle with permanent data storage. FLASH technology permits multiple erase and reprogram cycles. The AT17F16-30TQC FLASH variant provides greater flexibility for applications requiring field updates or multiple programming iterations.

Q: Are the supply voltage ranges fully compatible?

A: Yes. The AT17F16-30TQC operates at 2.97V to 3.63V, which fully encompasses the XC17V16PC44C specification of 3.0V to 3.6V. Both parts are compatible with standard 3.3V supply systems.

Q: Do both parts have identical moisture sensitivity requirements?

A: Yes. Both the XC17V16PC44C and AT17F16-30TQC are classified as MSL 3 (168 Hours), requiring identical moisture handling and storage protocols during manufacturing and assembly.

Q: What compliance considerations apply to both parts?

A: Both parts are RoHS non-compliant and REACH unaffected. They share identical HTSUS classification (8542.32.0071), ensuring consistent regulatory treatment in legacy system applications.

Q: Is the 44-pin count identical between both packages?

A: Yes, both parts use 44-pin configurations. However, the pin layout and physical footprint differ between LCC (J-Lead) and TQFP packages. Electrical pin mapping must be verified against the original design documentation.

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