Renesas Electronics 7006S55PF SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7006S55PF is a 128Kbit dual-port asynchronous SRAM memory IC in 64-TQFP surface mount packaging. This component features parallel memory interface with 55 ns access time and write cycle time, operating across 4.5V to 5.5V supply voltage range with 0°C to 70°C temperature specification. The 7006S55PF is classified as obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Type	Volatile SRAM
Memory Format	Dual Port, Asynchronous
Memory Size	128Kbit
Memory Organization	16K 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 (14x14)
Mounting Type	Surface Mount
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the 7006S55PF is determined by strict equivalence across the following critical parameters:

Memory capacity: 128Kbit minimum requirement
Memory organization: 16K x 8 configuration
Memory technology: Dual-port asynchronous SRAM
Memory interface: Parallel interface
Package type: 64-TQFP (14x14) surface mount
Voltage supply range: 4.5V ~ 5.5V compatibility
Operating temperature range: 0°C ~ 70°C minimum coverage
Moisture sensitivity level: 3 (168 Hours) or better

The 7006L15PFG meets all substitution criteria. This part maintains identical memory capacity, organization, technology, interface, and packaging specifications. The 7006L15PFG provides improved access time (15 ns versus 55 ns) and write cycle time (15 ns versus 55 ns), representing a performance upgrade while maintaining full backward compatibility with existing circuit designs.

Parameter Comparison

Parameter	7006S55PF (Main Part)	7006L15PFG (Substitute)
Memory Size	128Kbit	128Kbit
Memory Organization	16K x 8	16K x 8
Memory Format	SRAM - Dual Port, Asynchronous	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel	Parallel
Access Time	55 ns	15 ns
Write Cycle Time	55 ns	15 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 (14x14)	64-TQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
MSL Rating	3 (168 Hours)	3 (168 Hours)
Product Status	Obsolete	Active
RoHS Compliance	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 7006L15PFG is the qualified substitute for the obsolete 7006S55PF. Selection of the 7006L15PFG is supported by the following engineering factors:

Product status: The 7006L15PFG maintains active product status with confirmed inventory availability (1113 pcs), whereas the 7006S55PF is obsolete. Active status ensures long-term supply chain continuity and manufacturing support.

Regulatory compliance: The 7006L15PFG achieves ROHS3 compliance, meeting current environmental and regulatory requirements for electronic components. The 7006S55PF is RoHS non-compliant, presenting regulatory risk in modern applications.

Electrical compatibility: The 7006L15PFG maintains identical voltage supply range (4.5V ~ 5.5V) and operating temperature range (0°C ~ 70°C), ensuring direct circuit compatibility without modification.

Performance characteristics: The 7006L15PFG provides superior access time and write cycle time specifications (15 ns versus 55 ns), delivering performance enhancement while maintaining full backward compatibility.

Package equivalence: Both parts utilize identical 64-TQFP (14x14) surface mount packaging, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the 7006L15PFG directly replace the 7006S55PF in existing designs?

A: Yes. The 7006L15PFG provides direct substitution with identical memory capacity (128Kbit), organization (16K x 8), package type (64-TQFP), and electrical specifications (4.5V ~ 5.5V, 0°C ~ 70°C). The improved access time and write cycle time represent performance enhancement without compatibility issues.

Q: What are the key differences between these parts?

A: The primary differences are access time (55 ns versus 15 ns), write cycle time (55 ns versus 15 ns), product status (obsolete versus active), and RoHS compliance (non-compliant versus ROHS3 compliant). Memory capacity, organization, interface, and packaging remain identical.

Q: Is the 7006L15PFG available in the same packaging as the 7006S55PF?

A: Yes. Both parts use 64-TQFP (14x14) surface mount packaging with identical pinout and mechanical dimensions, enabling direct PCB compatibility.

Q: What is the moisture sensitivity level for both parts?

A: Both the 7006S55PF and 7006L15PFG carry MSL rating 3 (168 Hours), indicating identical moisture handling and storage requirements.

Q: Does the 7006L15PFG meet current regulatory requirements?

A: Yes. The 7006L15PFG is ROHS3 compliant, meeting current environmental regulations. The 7006S55PF is RoHS non-compliant and does not meet modern regulatory standards.

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