Renesas Electronics 7006S25PF SRAM 128Kbit Parallel Memory - Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7006S25PF is a dual-port asynchronous SRAM memory IC with 128Kbit capacity organized as 16K x 8, housed in a 64-TQFP surface mount package. This component operates at 25 ns access time with a supply voltage range of 4.5V to 5.5V and is rated for 0°C to 70°C operating temperature. The 7006S25PF is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. Finding suitable substitute parts ensures design continuity and supply chain reliability.

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	25 ns
Write Cycle Time	25 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 of the 7006S25PF is determined by strict equivalence across the following critical parameters:

Memory capacity and organization (128Kbit, 16K x 8)
Memory technology (Dual Port, Asynchronous SRAM)
Interface type (Parallel)
Package specification (64-TQFP, 14x14 mm)
Supply voltage compatibility (4.5V ~ 5.5V)
Operating temperature range (0°C ~ 70°C)
Mounting type (Surface Mount)

The 7006L15PFG qualifies as a direct substitute because it maintains identical memory capacity, organization, technology, interface, package, voltage, temperature, and mounting specifications. The primary difference is improved access time performance (15 ns versus 25 ns), which represents a performance upgrade rather than a functional incompatibility.

Parameter Comparison

Parameter	7006S25PF (Main Part)	7006L15PFG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Type	Volatile SRAM	Volatile SRAM
Memory Format	Dual Port, Asynchronous	Dual Port, Asynchronous
Memory Size	128Kbit	128Kbit
Memory Organization	16K x 8	16K x 8
Memory Interface	Parallel	Parallel
Access Time	25 ns	15 ns
Write Cycle Time	25 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 Status	RoHS non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

The 7006L15PFG is the qualified substitute for the obsolete 7006S25PF. Selection is based on the following engineering criteria:

Functional Equivalence: Both parts maintain identical memory capacity (128Kbit), organization (16K x 8), technology (dual-port asynchronous SRAM), interface (parallel), package (64-TQFP), voltage range (4.5V ~ 5.5V), and temperature rating (0°C ~ 70°C). Pin-for-pin compatibility is assured.

Product Status: The 7006S25PF is obsolete, while the 7006L15PFG is active. Active product status ensures ongoing availability and manufacturing support.

Compliance: The 7006L15PFG achieves ROHS3 compliance, whereas the 7006S25PF is non-compliant. For applications subject to RoHS regulations, the 7006L15PFG is the required choice.

Performance Enhancement: The 7006L15PFG provides faster access and write cycle times (15 ns versus 25 ns), delivering improved system performance without functional trade-offs.

Frequently Asked Questions (FAQ)

Q: Is the 7006L15PFG a direct pin-for-pin replacement for the 7006S25PF?

A: Yes. Both parts use the 64-TQFP package with identical pinout. No PCB modifications are required for substitution.

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

A: The 7006L15PFG offers faster access time (15 ns) and write cycle time (15 ns) compared to the 7006S25PF (25 ns). This represents a performance upgrade. The 7006L15PFG also achieves ROHS3 compliance, whereas the 7006S25PF does not.

Q: Can I use the 7006L15PFG in a circuit designed for the 7006S25PF?

A: Yes. The faster access time of the 7006L15PFG is backward compatible with designs specified for 25 ns operation. No timing violations will occur.

Q: Are there any supply voltage or temperature differences?

A: No. Both parts operate across the identical supply voltage range (4.5V ~ 5.5V) and temperature range (0°C ~ 70°C).

Q: Why is the 7006S25PF obsolete?

A: The 7006S25PF has been discontinued by Renesas Electronics Corporation. The 7006L15PFG represents the active product line continuation with equivalent functionality and improved specifications.

Q: Does the MSL rating differ between these parts?

A: No. Both parts carry an MSL rating of 3 (168 Hours), indicating identical moisture sensitivity handling requirements.

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