Renesas Electronics 7130LA55TF8 SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7130LA55TF8 is an 8Kbit dual-port asynchronous SRAM memory IC in a 64-TQFP surface mount package. This part operates with a 55 ns access time and write cycle time, designed for parallel memory applications requiring volatile storage. The product is currently obsolete, making identification of compatible substitute parts essential for system redesign, legacy system maintenance, or component sourcing when original inventory becomes unavailable.

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
Supply Voltage	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	64-TQFP (10x10)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the 7130LA55TF8 is determined by the following critical parameters:

Memory capacity (8Kbit) and organization (1K x 8) must remain identical
Memory technology must be dual-port asynchronous SRAM
Parallel interface requirement must be maintained
Package type must be 64-TQFP (10x10) for mechanical and electrical compatibility
Supply voltage range must encompass or match 4.5V ~ 5.5V
Operating temperature range must support 0°C ~ 70°C minimum

The 7130LA20TFG8 qualifies as a direct substitute. While it features improved access time (20 ns versus 55 ns) and write cycle time (20 ns versus 55 ns), these represent performance enhancements rather than incompatibilities. All other electrical and mechanical parameters remain identical, including memory capacity, organization, interface type, package configuration, and voltage specifications.

Parameter Comparison

Parameter	7130LA55TF8 (Main Part)	7130LA20TFG8 (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
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	20 ns
Write Cycle Time	55 ns	20 ns
Supply Voltage	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C
Package Type	64-TQFP (10x10)	64-TQFP (10x10)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 7130LA20TFG8 is the qualified substitute for the 7130LA55TF8 based on the following engineering criteria:

Product Status: The 7130LA55TF8 is obsolete, while the 7130LA20TFG8 maintains active product status with confirmed inventory availability (1047 pcs in stock versus 816 pcs for the obsolete part). Active status ensures continued supply chain access and manufacturing support.

Compliance and Certifications: The 7130LA20TFG8 achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. Both parts maintain identical REACH unaffected status and EAR99 ECCN classification. The substitute part meets modern regulatory requirements for new designs and system updates.

Performance Characteristics: The 7130LA20TFG8 provides faster access time (20 ns) and write cycle time (20 ns) compared to the original specification (55 ns). This performance improvement is backward compatible with designs originally specified for the 7130LA55TF8, as faster memory does not create timing violations in systems designed for slower components.

Packaging and Mechanical Compatibility: Both parts utilize identical 64-TQFP (10x10) surface mount packages with matching pin configurations, enabling direct PCB-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20TFG8 be used as a direct replacement for the 7130LA55TF8 on existing PCBs?

A: Yes. Both parts share identical package geometry (64-TQFP 10x10), pin count, and electrical interface specifications. No PCB modifications are required for substitution.

Q: What is the significance of the faster access time in the 7130LA20TFG8?

A: The 20 ns access time in the substitute part is faster than the original 55 ns specification. Faster memory is functionally compatible with designs specified for slower components, as it does not introduce timing violations. System timing margins are maintained or improved.

Q: Are there any voltage or temperature compatibility concerns?

A: No. Both parts operate across identical supply voltage ranges (4.5V ~ 5.5V) and temperature ranges (0°C ~ 70°C). Electrical operating conditions are fully compatible.

Q: Why is RoHS compliance important for this substitution?

A: The 7130LA20TFG8 achieves ROHS3 compliance while the original part does not. For new designs, system updates, or applications subject to RoHS regulations, the compliant substitute part ensures regulatory adherence and reduces environmental impact through restricted hazardous substance elimination.

Q: Is the moisture sensitivity level identical between both parts?

A: Yes. Both the 7130LA55TF8 and 7130LA20TFG8 carry MSL 3 (168 Hours) classification, requiring identical handling, storage, and reflow procedures during assembly.

Q: What is the base product number relationship between these parts?

A: Both parts share the base product number 7130LA. The suffix variations (55TF8 versus 20TFG8) indicate speed grade and packaging format differences, with the 20TFG8 representing the faster, tape-and-reel packaged variant.

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