Part A
70V28L20PFGI
Renesas ÉLECTRONIQUE
- Lifecycle
- Active
- Stock
- 7549 PCS
- Series
- Mémoire - mémoire
Replacement verdict
Compatible functional replacement candidate
The 70V28L20PFGI and 70V28L20PF are functionally equivalent SRAM devices sharing identical core specifications, with the primary distinction being the 70V28L20PFGI's Pb-free, RoHS-compliant package finish. The 70V28L20PFGI is a suitable drop-in replacement for the 70V28L20PF in applications requiring environmental compliance, provided board-level solderability with lead-free finishes is validated.
Memory Density and Organization
High match
Access Time
High match
Package Type and Pinout
High match
Lead Finish and RoHS Compliance
Validation required
Parts at a glance
Part B
70V28L20PF
Renesas Electronics, États - Unis
- Lifecycle
- Active
- Stock
- 9661 PCS
- Package
- LQFP-100
- Series
- Mémoire
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 70V28L20PFGI | 70V28L20PF | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc | Identical manufacturer ensures the same design, process, and quality standards, supporting direct substitutability. |
| Memory Type | SRAM - Dual Port, Asynchronous | SRAM - Dual Port, Asynchronous | Same memory architecture means the devices are functionally interchangeable in dual-port asynchronous SRAM applications. |
| Memory Size | 128Kbit (16K x 8) | 128Kbit (16K x 8) | Matching density and organization ensures identical addressable storage capacity and data bus width compatibility. |
| Access Time | 20 ns | 20 ns | Identical access time guarantees the same read/write timing performance in the target system. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Same operating voltage range ensures electrical compatibility with the existing power supply design. |
| Operating Temperature Range | -40°C to 85°C | 0°C to 70°C | The industrial temperature range of the PFGI version allows operation in harsher environments, while the PF version is limited to commercial temperatures. |
| Package / Case | 100-LQFP | 100-LQFP | Same package and pinout allow drop-in replacement without PCB layout changes. |
| Mounting Type | Surface Mount | Surface Mount | Identical mounting method ensures compatibility with the same assembly process. |
| Packaging | Tray | Tray | Same packaging simplifies inventory handling and automated assembly line feeding. |
| RoHS Status | RoHS Compliant | Non-RoHS Compliant | RoHS compliance affects regulatory acceptance and environmental requirements for the final product. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 70V28L20PFGI | 70V28L20PF |
|---|---|---|
| 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 | 1Mbit | 1Mb (64K x 16) |
| Memory Interface | Parallel | Parallel |
| Write Cycle Time - Word Page | - | 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 |
| Base Product Number | 70V28 | - |
| Digi Key Programmable | Not Verified | - |
| Memory Organization | 64K x 16 | - |
| Write Cycle Time - Word, Page | 20ns | - |
| Packaging | Tray | - |
Frequently asked questions
What is the difference between the 70V28L20PFGI and the 70V28L20PF?
The 70V28L20PFGI and 70V28L20PF are both 64K x 16 dual-port static RAMs from the IDT (now Renesas) 70V28L family with a 20 ns access time. The primary difference is the operating temperature range and corresponding qualification: the 70V28L20PF is specified for commercial temperature ranges, while the 70V28L20PFGI is specified for industrial temperature ranges. The "I" suffix in the part number denotes the industrial temperature version.
Are the 70V28L20PFGI and 70V28L20PF functionally interchangeable?
Functionally, both devices provide the same 64K x 16 dual-port SRAM architecture, pinout, and 20 ns access time. However, they are not interchangeable in all applications because the 70V28L20PFGI is rated for the industrial temperature range while the 70V28L20PF is rated for the commercial temperature range. A design requiring industrial temperature operation must use the 70V28L20PFGI or another appropriately rated variant.
What is the memory organization and density of the 70V28L20PFGI and 70V28L20PF?
Both devices are 1 Megabit dual-port SRAMs organized as 64K x 16 bits. They feature two independent ports with separate control, address, and I/O pins that permit asynchronous simultaneous access to any memory location.
What is the access time of the 70V28L20PFGI and 70V28L20PF?
Both the 70V28L20PFGI and 70V28L20PF are rated for a 20 ns maximum access time, as indicated by the "20" in the part number. This speed grade applies to both ports.
What package type do the 70V28L20PFGI and 70V28L20PF use?
Both devices are offered in a 100-pin Thin Quad Flat Pack (TQFP) package, denoted by the "PF" suffix in the part number. The package is a surface-mount plastic TQFP with a 14 mm x 14 mm body.
What are the operating temperature ranges for the 70V28L20PFGI and 70V28L20PF?
The 70V28L20PF is specified for the commercial temperature range of 0°C to +70°C. The 70V28L20PFGI is specified for the industrial temperature range of -40°C to +85°C. The industrial version is required for applications exposed to extended temperature conditions.
Do the 70V28L20PFGI and 70V28L20PF support battery backup or low-power standby operation?
Both devices are members of the 70V28L low-power dual-port SRAM family, which is designed to support battery backup operation. They feature a low standby current and can be placed in a power-down mode via the chip enable pins to conserve power. Consult the manufacturer datasheet for specific standby current and battery backup voltage specifications.
Can the 70V28L20PFGI be used as a drop-in replacement for the 70V28L20PF in an existing commercial-temperature design?
Yes, in most cases the 70V28L20PFGI can be used in place of the 70V28L20PF in a commercial-temperature design because it shares the same package, pinout, and functional specifications, and its industrial temperature rating covers the commercial range. However, the designer should verify that all timing, power, and signal integrity requirements are met in the target application.