Part A
EP1C3T100I7N
Intel
- Lifecycle
- Active
- Stock
- 3439 PCS
- Package
- TQFP-100
- Series
- Embedded - FPGAs (Field Programmable Gate Array)
Replacement verdict
Compatible functional replacement candidate
The EP1C3T100I7N and EP1C3T100C7N are functionally equivalent Cyclone FPGA devices sharing identical logic density, package, and pinout, with the sole distinction being the industrial versus commercial temperature grade. The EP1C3T100I7N is a valid functional replacement for the EP1C3T100C7N in industrial and extended-temperature applications, while the reverse substitution is acceptable only where the commercial temperature range is sufficient.
Logic Density and Family
High match
Package and Pinout
High match
Speed Grade
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
EP1C3T100C7N
Intel
- Lifecycle
- Active
- Stock
- 6987 PCS
- Package
- TQFP-100
- Series
- Embedded - FPGAs (Field Programmable Gate Array)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | EP1C3T100I7N | EP1C3T100C7N | Why it matters |
|---|---|---|---|
| Operating Temperature Range | -40°C to +100°C (Industrial) | 0°C to +85°C (Commercial) | Determines the environments in which the device can reliably operate; industrial-grade parts support wider temperature extremes. |
| Speed Grade | 7 (Industrial) | 7 (Commercial) | Speed grade affects maximum clock frequency and timing closure; both share grade 7 but differ in temperature-qualified performance. |
| Logic Elements (LEs) | 2,910 | 2,910 | Defines the available programmable logic capacity for implementing user designs. |
| Total RAM Bits | 59,904 | 59,904 | On-chip memory capacity impacts ability to store data, buffers, and look-up tables within the FPGA. |
| Number of I/O Pins | 65 | 65 | Determines how many external signals the device can interface with in a given package. |
| Package / Case | 100-TQFP | 100-TQFP | Physical footprint and pinout must match for board-level drop-in compatibility. |
| Supply Voltage | 1.5 V Core | 1.5 V Core | Core voltage must be compatible with the board power design for correct operation. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must match the PCB manufacturing process. |
| Temperature Qualification Grade | Industrial (I) | Commercial (C) | The suffix grade indicates tested environmental robustness; industrial parts are screened for harsher conditions. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | EP1C3T100I7N | EP1C3T100C7N |
|---|---|---|
| Supplier | - | Intel |
| Series | Cyclone® | Cyclone® |
| Part Status | Obsolete | Obsolete |
| Number of LABs/CLBs | 291 | 291 |
| Number of Logic Elements/Cells | 2910 | 2910 |
| Total RAM Bits | 59904 | 59904 |
| Number of I/O | 65 | 65 |
| Voltage - Supply | 1.425V ~ 1.575V | 1.425V ~ 1.575V |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 100°C (TJ) | 0°C ~ 85°C (TJ) |
Frequently asked questions
What are the key differences between the EP1C3T100I7N and EP1C3T100C7N?
The primary difference is the operating temperature range and speed grade. The EP1C3T100I7N is an industrial-grade device with a speed grade of 7 and an operating temperature range of -40°C to +100°C (junction temperature). The EP1C3T100C7N is a commercial-grade device with the same speed grade of 7 but an operating temperature range of 0°C to +85°C (junction temperature). Both are Cyclone I FPGAs with 2,910 logic elements in a 100-pin TQFP package.
Are the EP1C3T100I7N and EP1C3T100C7N pin-compatible?
Yes, both devices are offered in the same 100-pin TQFP (14 x 14 mm) package with identical pinouts as defined by the manufacturer's datasheet. They are pin-to-pin compatible, allowing the same PCB footprint to be used for either device.
Can the EP1C3T100C7N be used as a drop-in replacement for the EP1C3T100I7N?
No, not in all applications. The EP1C3T100C7N is rated for a commercial temperature range of 0°C to +85°C junction temperature, while the EP1C3T100I7N supports -40°C to +100°C junction temperature. If the target application requires operation outside the commercial range, the industrial-grade EP1C3T100I7N must be used. Within the commercial range, the C7N can function as a replacement, but timing and power characteristics should be verified against the specific design requirements.
Do both devices have the same logic capacity and resources?
Yes, both the EP1C3T100I7N and EP1C3T100C7N are Cyclone I FPGA devices with 2,910 logic elements (LEs), 59,904 total RAM bits, and 65 available user I/O pins in the 100-pin TQFP package. The logic architecture and embedded memory resources are identical.
What is the speed grade of these devices and how does it affect performance?
Both devices have a speed grade of 7, which is the fastest standard speed grade offered for the Cyclone I EP1C3 family. The speed grade determines the maximum operating frequency and timing characteristics. Since both share the same speed grade, their timing performance is identical under the same operating conditions (voltage and temperature).
What are the power supply requirements for the EP1C3T100I7N and EP1C3T100C7N?
Both devices require a 1.5 V core supply (VCCINT) and support 3.3 V, 2.5 V, or 1.8 V I/O standards (VCCIO) as specified in the Cyclone I device family datasheet. Power consumption may vary slightly between the industrial and commercial versions due to different leakage characteristics over temperature, but the nominal supply voltage requirements are the same.
Are these devices RoHS compliant and what is their package marking?
Both the EP1C3T100I7N and EP1C3T100C7N are available in lead-free (Pb-free) versions, indicated by the "N" suffix in the ordering code. The "N" suffix denotes RoHS-compliant, lead-free packaging. The package is a 100-pin TQFP with a 14 x 14 mm body size. The industrial version is marked with an "I" and the commercial version with a "C" in the part number, along with the speed grade "7".
Which device should be selected for an automotive or industrial application?
For automotive or industrial applications that require operation below 0°C or above +85°C junction temperature, the EP1C3T100I7N (industrial grade, -40°C to +100°C) should be selected. The EP1C3T100C7N (commercial grade, 0°C to +85°C) is intended for consumer and commercial applications with controlled temperature environments. Always verify the specific temperature requirements of the target application against the device's rated operating conditions.