Equivalent & Substitute Parts for 7130LA55TFI8

Part Overview

The 7130LA55TFI8 is a dual-port asynchronous SRAM memory IC with 8Kbit capacity organized as 1K x 8, packaged in a 64-TQFP (10x10) surface mount configuration. This part is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The primary reason for seeking substitutes is the discontinued product status, which impacts long-term availability and supply chain reliability.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	8Kbit
Memory Organization	1K x 8
Memory Interface	Parallel
Access Time	55 ns
Write Cycle Time	55 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C
Package Type	64-TQFP (10x10)
Mounting Type	Surface Mount
Manufacturer	Renesas Electronics Corporation

Substitute Part Grouping Explanation

Substitution eligibility for the 7130LA55TFI8 is determined by the following critical parameters:

Memory Capacity and Organization: Must be 8Kbit with 1K x 8 organization to maintain pin-to-pin and functional compatibility
Technology and Interface: Must be dual-port asynchronous SRAM with parallel interface
Package and Pinout: Must use 64-TQFP (10x10) surface mount package
Voltage Supply: Must operate within 4.5V ~ 5.5V range
Operating Temperature Range: Must support -40°C ~ 85°C specification
Access and Write Cycle Time: Substitute parts may have equal or faster timing specifications without functional impact

The 7130LA25TFGI qualifies as a direct substitute based on these parameters. It maintains identical memory capacity, organization, technology, package, voltage, and temperature specifications while offering improved access time (25 ns versus 55 ns).

Parameter Comparison

Parameter	7130LA55TFI8 (Main Part)	7130LA25TFGI (Substitute)
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	8Kbit	8Kbit
Memory Organization	1K x 8	1K x 8
Memory Interface	Parallel	Parallel
Access Time	55 ns	25 ns
Write Cycle Time	55 ns	25 ns
Voltage Supply Range	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C
Package Type	64-TQFP (10x10)	64-TQFP (10x10)
Mounting Type	Surface Mount	Surface Mount
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Product Status	Obsolete	Active
RoHS Compliance	Non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 7130LA25TFGI is the qualified substitute for the 7130LA55TFI8. Selection should be based on the following factors:

Product Status: The 7130LA25TFGI carries active product status, ensuring ongoing availability and supply chain continuity compared to the obsolete 7130LA55TFI8.

Compliance and Certifications: The 7130LA25TFGI meets ROHS3 compliance requirements, whereas the 7130LA55TFI8 is non-compliant. For applications subject to environmental regulations or customer requirements, the substitute part provides regulatory alignment.

Performance Characteristics: The 7130LA25TFGI offers faster access and write cycle times (25 ns versus 55 ns). This performance improvement is backward-compatible with designs specified for the original part, as faster memory does not introduce timing violations in systems designed for 55 ns operation.

Electrical and Mechanical Compatibility: Both parts share identical voltage supply ranges, operating temperature specifications, memory organization, and package footprint, ensuring direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA25TFGI be used as a direct replacement for the 7130LA55TFI8 without PCB modifications?

A: Yes. Both parts use the 64-TQFP (10x10) package with identical pinout and electrical specifications. No PCB layout changes are required.

Q: What is the impact of the faster access time in the 7130LA25TFGI?

A: The 25 ns access time of the substitute part is faster than the 55 ns specification of the original part. Faster memory is functionally compatible with designs specified for slower memory and does not introduce timing violations.

Q: Are there any voltage or temperature operating range differences?

A: No. Both parts operate within the same voltage supply range (4.5V ~ 5.5V) and temperature range (-40°C ~ 85°C).

Q: What is the significance of the RoHS compliance difference?

A: The 7130LA25TFGI is ROHS3 compliant, while the 7130LA55TFI8 is non-compliant. For applications subject to environmental regulations or customer RoHS requirements, the substitute part provides regulatory compliance.

Q: Are both parts from the same manufacturer?

A: Yes. Both the 7130LA55TFI8 and 7130LA25TFGI are manufactured by Renesas Electronics Corporation, ensuring consistent design and quality standards.

Q: What is the difference in product status between these parts?

A: The 7130LA55TFI8 is classified as obsolete, indicating discontinued production. The 7130LA25TFGI is active, ensuring long-term availability and supply chain support.

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