Renesas Electronics 7132SA100J SRAM 16Kbit Parallel Memory IC

Part Overview

The Renesas Electronics 7132SA100J is a 16Kbit dual-port asynchronous SRAM memory IC in a 52-PLCC surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations. The 7132SA100J provides parallel memory interface with 100 ns access time and operates within a 4.5V to 5.5V supply voltage range, suitable for legacy embedded systems and industrial applications requiring volatile memory storage.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	16Kbit
Memory Organization	2K x 8
Memory Interface	Parallel
Access Time	100 ns
Write Cycle Time	100 ns
Voltage Supply Range	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C
Package Type	52-PLCC (J-Lead)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the 7132SA100J is determined by strict equivalence across the following critical parameters:

Memory capacity and organization must remain constant at 16Kbit with 2K x 8 configuration to ensure address and data bus compatibility. The dual-port asynchronous SRAM technology and parallel interface are non-negotiable functional requirements. Package type must be 52-PLCC (J-Lead) to maintain PCB footprint and pinout compatibility. Supply voltage range of 4.5V to 5.5V and operating temperature range of 0°C to 70°C must be supported.

The 7132LA20JG qualifies as a direct substitute based on these parameters. While it features improved access time (20 ns versus 100 ns) and write cycle time (20 ns versus 100 ns), these represent performance enhancements that do not compromise backward compatibility. The substitute maintains identical memory capacity, organization, interface type, package configuration, voltage specifications, and temperature range.

Parameter Comparison

Parameter	7132SA100J (Main Part)	7132LA20JG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	16Kbit	16Kbit
Memory Organization	2K x 8	2K x 8
Memory Interface	Parallel	Parallel
Access Time	100 ns	20 ns
Write Cycle Time	100 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	52-PLCC (J-Lead)	52-PLCC (J-Lead)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	Bulk	Tube

Engineering Selection Recommendations

The 7132LA20JG is the qualified substitute for the obsolete 7132SA100J. Selection of this substitute is supported by the following engineering factors:

The substitute maintains full functional and electrical equivalence across all critical memory parameters. The 7132LA20JG is classified as active product status, ensuring continued availability and supply chain reliability compared to the obsolete main part. The substitute achieves ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the main part is RoHS non-compliant. Packaging is provided in tube format for the substitute, improving handling and inventory management compared to bulk packaging.

The improved access time and write cycle time specifications of the 7132LA20JG (20 ns) represent performance enhancement over the main part (100 ns) and do not introduce compatibility issues in systems designed for the original 100 ns specification. This performance margin provides additional design margin for legacy system implementations.

Frequently Asked Questions (FAQ)

Q: Can the 7132LA20JG directly replace the 7132SA100J without PCB modifications?

A: Yes. Both parts use identical 52-PLCC (J-Lead) package configuration with matching pinout and footprint. No PCB layout changes are required for substitution.

Q: Are there differences in electrical performance between these parts?

A: The 7132LA20JG provides faster access time (20 ns) and write cycle time (20 ns) compared to the 7132SA100J (100 ns). This represents performance improvement and does not create compatibility issues for systems designed around the slower specification.

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

A: The 7132SA100J is RoHS non-compliant, while the 7132LA20JG is ROHS3 compliant. For new designs and systems subject to environmental regulations, the compliant substitute is the appropriate selection.

Q: Are supply voltage and temperature specifications identical?

A: Yes. Both parts operate within 4.5V to 5.5V supply voltage range and 0°C to 70°C operating temperature range, ensuring full electrical compatibility.

Q: What is the memory capacity and organization of both parts?

A: Both the 7132SA100J and 7132LA20JG provide 16Kbit capacity organized as 2K x 8 (2048 words by 8 bits), maintaining identical address and data bus requirements.

Q: Does the substitute support the same parallel interface?

A: Yes. Both parts implement dual-port asynchronous SRAM with parallel memory interface, providing identical functional interface for system integration.

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