Renesas Electronics 7130SA55TF SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7130SA55TF is an 8Kbit dual-port asynchronous SRAM memory IC in a 64-TQFP surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The part operates within a 4.5V to 5.5V supply voltage range with a 55 ns access time and write cycle time, suitable for parallel memory interface applications requiring volatile storage.

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	0°C ~ 70°C
Package Type	64-TQFP (10x10)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the 7130SA55TF is determined by strict equivalence across the following critical parameters:

Memory capacity: 8Kbit minimum
Memory organization: 1K x 8 configuration
Technology: Dual-port asynchronous SRAM
Interface: Parallel memory interface
Package: 64-TQFP (10x10) surface mount
Voltage supply: 4.5V ~ 5.5V compatibility
Operating temperature range: 0°C ~ 70°C minimum coverage

The 7130LA20TFG meets all substitution criteria. This part maintains identical memory capacity, organization, technology, interface, package, voltage, and temperature specifications. The primary distinction is improved access time performance (20 ns versus 55 ns), which represents a performance upgrade rather than a functional limitation.

Parameter Comparison

Parameter	7130SA55TF (Main Part)	7130LA20TFG (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
Voltage Supply Range	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

Engineering Selection Recommendations

The 7130LA20TFG is the qualified substitute for the obsolete 7130SA55TF. Selection of this alternative is supported by the following engineering factors:

The substitute part maintains active product status, ensuring long-term availability and supply chain continuity. The 7130LA20TFG achieves ROHS3 compliance, whereas the original part is non-compliant, providing environmental and regulatory advantages for new designs and system updates. Both parts are REACH unaffected and carry identical ECCN and HTSUS classifications.

The 7130LA20TFG delivers superior access time and write cycle time performance (20 ns versus 55 ns), which provides timing margin improvement without introducing compatibility concerns. The identical package footprint, pin configuration, voltage supply range, and operating temperature specifications ensure direct substitution at the board level without design modification.

Frequently Asked Questions (FAQ)

Q: Can the 7130LA20TFG directly replace the 7130SA55TF in existing designs?

A: Yes. Both parts share identical memory capacity (8Kbit), organization (1K x 8), package (64-TQFP), voltage supply range (4.5V ~ 5.5V), and operating temperature range (0°C ~ 70°C). The pin configuration and footprint are equivalent, enabling direct substitution without PCB redesign.

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

A: The 7130LA20TFG provides faster access time and write cycle time (20 ns) compared to the 7130SA55TF (55 ns). This represents a performance upgrade. The substitute also achieves ROHS3 compliance, whereas the original part is non-compliant.

Q: Why is the 7130SA55TF classified as obsolete?

A: The 7130SA55TF has reached end-of-life status with Renesas Electronics Corporation. The 7130LA20TFG is the active equivalent offering superior performance and regulatory compliance.

Q: Are there any electrical or mechanical incompatibilities between these parts?

A: No. Both parts operate within identical voltage supply ranges (4.5V ~ 5.5V) and temperature ranges (0°C ~ 70°C). The 64-TQFP package dimensions and pin assignments are equivalent, ensuring mechanical and electrical compatibility.

Q: Does the faster access time of the 7130LA20TFG affect system compatibility?

A: No. Faster access time represents an improvement that maintains backward compatibility. Systems designed for the 7130SA55TF will operate correctly with the 7130LA20TFG without timing violations or functional degradation.

Q: What is the packaging difference between these parts?

A: The 7130SA55TF is supplied in standard packaging, while the 7130LA20TFG is supplied in Tray packaging. Both use identical 64-TQFP (10x10) surface mount packages suitable for automated assembly processes.

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