Part A
70V28L20PFGI
Renesas Electronics Corporation
- Lifecycle
- Active
- Stock
- 7549 Stückzahl
- Series
- Arbeitsspeicher
Replacement verdict
Compatible functional replacement candidate
The 70V28L20PFI8 is a functionally compatible replacement candidate for the 70V28L20PFGI, as both devices share identical core specifications including memory organization, supply voltage, access time, and package type. The only distinction is the packing method, with the PFI8 supplied in tape and reel format versus the PFGI in tray format. Designers can substitute these parts interchangeably without circuit modifications, provided the board assembly process accommodates the respective packaging format.
Memory Organization
High match
Supply Voltage
High match
Access Time
High match
Package Type
High match
Parts at a glance
Part B
70V28L20PFI8
Renesas Electronics America Inc.
- Lifecycle
- Active
- Stock
- 8107 Stückzahl
- Package
- LQFP-100
- Series
- Speicher
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 | 70V28L20PFI8 | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc | Identifies the original source of the device and ensures documentation, quality, and support come from the same vendor. |
| Memory Type | SRAM - Dual Port, Asynchronous | SRAM - Dual Port, Asynchronous | Defines the fundamental memory technology and access architecture, which must match for functional substitutability. |
| Memory Size | 128Kbit (16K x 8) | 128Kbit (16K x 8) | Determines the storage capacity and word width; a mismatch would prevent drop-in replacement in the target design. |
| Access Time | 20 ns | 20 ns | Sets the maximum speed at which the memory can be read; identical timing is required for compatible system operation. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | The operating voltage range must match the host system's power rail to avoid damage or unreliable operation. |
| Operating Temperature Range | -40°C to 85°C | -40°C to 85°C | Ensures the device functions reliably across the environmental conditions of the intended application. |
| Package / Case | 100-LQFP | 100-LQFP | The physical footprint and pinout must be identical for the part to fit the same PCB land pattern. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must match the board manufacturing process for a valid replacement. |
| Packaging | Tray | Tape & Reel (TR) | Different packaging affects handling, automated assembly, and minimum order quantities, though the die and function are the same. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 70V28L20PFGI | 70V28L20PFI8 |
|---|---|---|
| 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) | -40°C ~ 85°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 are the 70V28L20PFGI and 70V28L20PFI8?
Both are 3.3V 128K x 16 dual-port static RAM devices from the IDT (now Renesas) 70V28L series, featuring 20 ns access time and a 100-pin TQFP package. The 70V28L20PFGI is specified for the industrial temperature range (-40°C to +85°C), while the 70V28L20PFI8 is specified for the commercial temperature range (0°C to +70°C).
What is the difference between the 70V28L20PFGI and 70V28L20PFI8?
The primary difference is the operating temperature range: the 70V28L20PFGI is rated for industrial temperature (-40°C to +85°C), and the 70V28L20PFI8 is rated for commercial temperature (0°C to +70°C). Both share the same 128K x 16 dual-port SRAM architecture, 3.3V supply, 20 ns speed grade, and 100-pin TQFP package.
Are the 70V28L20PFGI and 70V28L20PFI8 pin-compatible?
Yes. Both devices use the same 100-pin TQFP package and the same pinout, so they are pin-compatible. The only difference is the temperature grade, which does not affect the pin assignment.
Can the 70V28L20PFGI and 70V28L20PFI8 be used interchangeably?
They can be used interchangeably only if the target application's operating temperature range is within the commercial range (0°C to +70°C). If the application requires industrial temperature operation (-40°C to +85°C), the 70V28L20PFI8 must not be substituted for the 70V28L20PFGI.
What is the access time of the 70V28L20PFGI and 70V28L20PFI8?
Both devices have a 20 ns access time, as indicated by the "20" in the part number. This is the maximum address access time at the specified operating conditions.
What supply voltage do the 70V28L20PFGI and 70V28L20PFI8 require?
Both devices operate from a 3.3V supply (typically 3.3V ± 0.3V), consistent with the 70V28L series specification.
What is the memory organization of the 70V28L20PFGI and 70V28L20PFI8?
Both devices are organized as 128K x 16, providing 2 Megabits of dual-port SRAM with independent left and right ports for simultaneous access.
Which temperature grade should be selected for an industrial application?
For an industrial application, the 70V28L20PFGI should be selected because it is rated for the industrial temperature range of -40°C to +85°C. The 70V28L20PFI8 is only rated for the commercial range of 0°C to +70°C and is not suitable for industrial temperature operation.