Part A
70V27L20PFGI
미국 리사 전자 회사
- Lifecycle
- Active
- Stock
- 3315 PCS
- Package
- LQFP-100
- Series
- 기억력
Replacement verdict
Compatible functional replacement candidate
The 70V27L20PFGI and 70V27L20PF are functionally equivalent dual-port SRAM devices sharing identical memory density, organization, speed grade, and package type. The 70V27L20PFGI is the lead-free (Pb-free/RoHS-compliant) version of the 70V27L20PF, making it a suitable drop-in replacement in most applications where RoHS compliance is required or preferred. Designers should verify solder profile compatibility and any application-specific environmental requirements before substituting.
Memory Density and Organization
High match
Access Time / Speed Grade
High match
Package Type and Pinout
High match
Lead Finish / RoHS Compliance
Validation required
Parts at a glance
Part B
70V27L20PF
미국 리사 전자 회사
- Lifecycle
- Active
- Stock
- 7543 PCS
- Package
- LQFP-100
- Series
- 기억력
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 70V27L20PFGI | 70V27L20PF | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc | Identical manufacturer ensures the same design, process, and quality standards. |
| Memory Type | SRAM - Dual Port, Asynchronous | SRAM - Dual Port, Asynchronous | Same memory architecture guarantees functional compatibility in dual-port applications. |
| Memory Size | 32Kbit (2K x 16) | 32Kbit (2K x 16) | Identical density and organization allow direct substitution without address map changes. |
| Access Time | 20 ns | 20 ns | Same speed grade ensures identical timing performance in the target system. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Matching voltage range confirms electrical compatibility with the existing power rail. |
| Operating Temperature | -40°C to 85°C (Industrial) | 0°C to 70°C (Commercial) | Different temperature grades affect suitability for industrial versus commercial environments. |
| Package / Case | 100-LQFP | 100-LQFP | Same package footprint enables drop-in board replacement without layout changes. |
| Mounting Type | Surface Mount | Surface Mount | Identical mounting method ensures assembly process compatibility. |
| RoHS Status | RoHS Compliant | Non-RoHS (contains lead) | RoHS compliance affects regulatory acceptance and environmental disposal requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 70V27L20PFGI | 70V27L20PF |
|---|---|---|
| Supplier | - | Renesas Electronics America Inc |
| Part Status | Active | Obsolete |
| Memory Type | Volatile | Volatile |
| Memory Format | SRAM | SRAM |
| Technology | SRAM - Dual Port, Asynchronous | SRAM - Dual Port, Asynchronous |
| Memory Size | 512Kb (32K x 16) | 512Kb (32K x 16) |
| Memory Interface | Parallel | Parallel |
| Write Cycle Time - Word Page | 20ns | 20ns |
| Access Time | 20 ns | 20 ns |
| Voltage - Supply | 3V ~ 3.6V | 3V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the 70V27L20PFGI and the 70V27L20PF?
The 70V27L20PFGI and 70V27L20PF are both 3.3V 32K x 16 dual-port static RAMs from the IDT (now Renesas) 70V27 series with a 20 ns access time. The primary difference is the operating temperature range and corresponding qualification: the 70V27L20PF is specified for the commercial temperature range (0°C to +70°C), while the 70V27L20PFGI is specified for the industrial temperature range (-40°C to +85°C). The "I" suffix in the part number denotes the industrial temperature version.
Are the 70V27L20PFGI and 70V27L20PF functionally interchangeable?
Yes, both devices are functionally identical dual-port SRAMs with the same 32K x 16 organization, 3.3V supply, 20 ns access time, and TQFP-100 package. They share the same pinout and functional operation. The only difference is the rated operating temperature range, so the industrial-grade 70V27L20PFGI can be used in applications requiring the wider temperature range, while the commercial-grade 70V27L20PF should only be used within 0°C to +70°C.
What package do the 70V27L20PFGI and 70V27L20PF use?
Both the 70V27L20PFGI and 70V27L20PF are offered in a 100-pin Thin Quad Flat Pack (TQFP) package. The "PF" in the part number designates the TQFP-100 package type. Designers should verify the specific package drawing and land pattern from the Renesas (formerly IDT) datasheet before finalizing PCB layout.
What is the access time and supply voltage of the 70V27L20PFGI and 70V27L20PF?
Both devices have a 20 ns access time, indicated by the "20" in the part number, and operate from a 3.3V power supply (with a typical tolerance of 3.3V ± 0.3V). These parameters are common to both the commercial and industrial temperature versions.
Can the 70V27L20PF be used as a drop-in replacement for the 70V27L20PFGI?
In applications where the operating temperature remains within 0°C to +70°C, the 70V27L20PF can be used in place of the 70V27L20PFGI because they are functionally and pin-compatible. However, if the application requires operation below 0°C or above +70°C, the 70V27L20PF is not rated for those conditions and the industrial-grade 70V27L20PFGI must be used instead.
What is the memory organization of the 70V27L20PFGI and 70V27L20PF?
Both devices are organized as 32K x 16 bits, providing 32,768 words of 16 bits each, for a total of 512K bits of dual-port SRAM. This organization is identical between the two part numbers.
Do the 70V27L20PFGI and 70V27L20PF support simultaneous access from both ports?
Yes, as dual-port SRAMs, both the 70V27L20PFGI and 70V27L20PF allow independent access from two ports to the same memory array. They include arbitration logic to handle simultaneous access to the same memory location. Designers should consult the Renesas 70V27 datasheet for details on arbitration, busy flag, and interrupt operation.
Which part number should be selected for an industrial temperature application?
For industrial temperature applications requiring operation from -40°C to +85°C, the 70V27L20PFGI should be selected. The 70V27L20PF is only rated for the commercial temperature range of 0°C to +70°C and should not be used outside that range.