Renesas Electronics 7037L15PF SRAM Equivalent & Substitute Parts

Part Overview

The Renesas Electronics 7037L15PF is a 576Kbit dual-port asynchronous SRAM memory IC in a 100-TQFP surface mount package. This component features parallel memory interface with 15 ns access time and write cycle time, operating across a 4.5V to 5.5V supply voltage range at temperatures from 0°C to 70°C. The 7037L15PF is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Memory Size	576Kbit
Memory Organization	32K x 18
Memory Type	Volatile SRAM
Technology	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel
Access Time	15 ns
Write Cycle Time	15 ns
Voltage Supply	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)
Package Type	100-TQFP (14x14)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 7037L15PF is determined by strict equivalence across the following critical parameters: memory technology (dual-port asynchronous SRAM), memory interface type (parallel), access time (15 ns), write cycle time (15 ns), supply voltage range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and physical package specification (100-TQFP 14x14). The Renesas Electronics 7035L15PFG meets all these core electrical and mechanical requirements. Memory organization and total capacity may differ between the main part and substitute, provided the substitute supports the same interface protocol and timing specifications required by the application circuit.

Parameter Comparison

Parameter	7037L15PF (Main Part)	7035L15PFG (Substitute)
Manufacturer	Renesas Electronics Corporation	Renesas Electronics Corporation
Memory Size	576Kbit	144Kbit
Memory Organization	32K x 18	8K x 18
Memory Type	Volatile SRAM	Volatile SRAM
Technology	SRAM - Dual Port, Asynchronous	SRAM - Dual Port, Asynchronous
Memory Interface	Parallel	Parallel
Access Time	15 ns	15 ns
Write Cycle Time	15 ns	15 ns
Voltage Supply	4.5V ~ 5.5V	4.5V ~ 5.5V
Operating Temperature	0°C ~ 70°C (TA)	0°C ~ 70°C (TA)
Package Type	100-TQFP (14x14)	100-TQFP (14x14)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

The 7035L15PFG is the manufacturer-recommended substitute for the obsolete 7037L15PF. Both components share identical electrical timing specifications (15 ns access and write cycle times), supply voltage requirements (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and physical package footprint (100-TQFP 14x14). The primary distinction is memory capacity: the 7035L15PFG provides 144Kbit (8K x 18) compared to the 7037L15PF's 576Kbit (32K x 18). The 7035L15PFG holds active product status and achieves ROHS3 compliance, whereas the 7037L15PF is obsolete and RoHS non-compliant. Both components maintain identical moisture sensitivity levels (MSL 3, 168 hours). Selection of the 7035L15PFG is appropriate for applications where memory capacity requirements do not exceed 144Kbit and where compliance with current environmental standards is required.

Frequently Asked Questions (FAQ)

Q: Can the 7035L15PFG directly replace the 7037L15PF in existing designs?

A: Direct replacement is possible from an electrical and timing perspective. Both components feature identical access times (15 ns), write cycle times (15 ns), supply voltage ranges (4.5V ~ 5.5V), operating temperatures (0°C ~ 70°C), and package specifications (100-TQFP 14x14). However, the 7035L15PFG provides reduced memory capacity (144Kbit versus 576Kbit). Substitution is valid only if the application circuit does not require more than 144Kbit of storage.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: memory technology (dual-port asynchronous SRAM), memory interface type (parallel), access time (15 ns), write cycle time (15 ns), supply voltage range (4.5V ~ 5.5V), operating temperature range (0°C ~ 70°C), and package specification (100-TQFP 14x14). All these parameters must match between the original and substitute component.

Q: Are there package or mounting differences between these components?

A: Both the 7037L15PF and 7035L15PFG use identical package specifications: 100-TQFP (14x14) with surface mount mounting type. PCB footprints and reflow soldering profiles are compatible.

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

A: The 7037L15PF is RoHS non-compliant, while the 7035L15PFG achieves ROHS3 compliance. For applications subject to environmental regulations or customer requirements mandating RoHS compliance, the 7035L15PFG is the appropriate selection.

Q: How does the memory capacity difference affect system design?

A: The 7035L15PFG provides 144Kbit (8K x 18 organization) compared to the 7037L15PF's 576Kbit (32K x 18 organization). Applications requiring storage of more than 144Kbit cannot use the 7035L15PFG as a direct substitute. System designers must evaluate whether reduced capacity meets application requirements or if alternative solutions are necessary.

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