Part A
10M40DAF256C8G
Intel
- Lifecycle
- Active
- Stock
- 5091 Stückzahl
- Package
- LBGA-256
- Series
- Embedded feFPGAs (Field Programmable Gate Array)
Replacement verdict
Compatible functional replacement candidate
The 10M40DAF256C8G and 10M40DAF256C7G are functionally equivalent Intel MAX 10 FPGA devices sharing identical logic density, package, I/O count, and feature set; the only distinction is the speed grade, where the C7G offers a faster core timing closure than the C8G. Both parts are drop-in compatible at the board level, and selection should be driven by timing margin requirements rather than functional substitution.
Logic Density
High match
Package Type
High match
I/O Count
High match
Speed Grade
Validation required
Parts at a glance
Part B
10M40DAF256C7G
Intel
- Lifecycle
- Active
- Stock
- 6528 Stückzahl
- Package
- LBGA-256
- Series
- Embedded feFPGAs (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 | 10M40DAF256C8G | 10M40DAF256C7G | Why it matters |
|---|---|---|---|
| Speed Grade | 8 | 7 | The speed grade determines the maximum operating frequency and timing closure margin; a grade 7 device is faster than a grade 8 device, so timing-critical designs may require the faster part. |
| Family | MAX 10 | MAX 10 | Both parts belong to the same device family, ensuring identical architecture, IP compatibility, and tool support. |
| Logic Elements (LEs) | 40000 | 40000 | Logic capacity must match the design's resource requirements; identical LE counts mean the same logic can be implemented in either device. |
| Package | 256-pin FBGA | 256-pin FBGA | Package type and pin count determine PCB footprint and pinout compatibility; matching packages allow drop-in replacement on the same board. |
| Operating Temperature Range | 0°C to 85°C (Commercial) | 0°C to 85°C (Commercial) | The temperature grade defines the environmental conditions under which the device is guaranteed to operate reliably. |
| Supply Voltage | 1.2 V core | 1.2 V core | Core supply voltage must match the board's power delivery design; identical voltages ensure electrical compatibility. |
| Configuration Memory | Internal configuration flash | Internal configuration flash | On-chip configuration flash enables instant-on operation and single-chip solution, affecting system boot architecture. |
| Number of I/O Pins | 178 | 178 | Available user I/O count determines how many external interfaces and peripherals can be connected. |
| Embedded Memory | 1260 Kbits | 1260 Kbits | Embedded memory blocks are used for data buffering, FIFOs, and on-chip storage; identical capacity supports the same memory-intensive functions. |
| Manufacturer | Intel / Altera | Intel / Altera | Same manufacturer ensures consistent quality, documentation, and long-term availability from a single source. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 10M40DAF256C8G | 10M40DAF256C7G |
|---|---|---|
| Supplier | - | Intel |
| Series | MAX® 10 | MAX® 10 |
| Part Status | Active | Active |
| Number of LABs/CLBs | 2500 | 2500 |
| Number of Logic Elements/Cells | 40000 | 40000 |
| Total RAM Bits | 1290240 | 1290240 |
| Number of I/O | 178 | 178 |
| Voltage - Supply | 1.15V ~ 1.25V | 1.15V ~ 1.25V |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | 0°C ~ 85°C (TJ) | 0°C ~ 85°C (TJ) |
Frequently asked questions
What is the difference between the 10M40DAF256C8G and the 10M40DAF256C7G?
The primary difference is the speed grade. The 10M40DAF256C8G is specified with a speed grade of 8, while the 10M40DAF256C7G is specified with a faster speed grade of 7. Both devices are Intel (formerly Altera) MAX 10 field-programmable gate arrays (FPGAs) in the same 256-pin FineLine BGA (FBGA) package, with 40,000 logic elements and dual-configuration flash memory. The speed grade affects timing performance, with grade 7 offering faster maximum operating frequencies than grade 8.
Are the 10M40DAF256C8G and 10M40DAF256C7G pin-to-pin compatible?
Yes. Both devices share the same 256-pin FineLine BGA (FBGA) package with identical pinouts as defined by the Intel MAX 10 device pin-out specifications. The only difference is the speed grade, so they are pin-to-pin compatible and can be used on the same PCB footprint.
Can the 10M40DAF256C7G be used as a direct drop-in replacement for the 10M40DAF256C8G?
In terms of package and pinout, yes, they are drop-in compatible. However, because the speed grade differs, the timing characteristics change. A design originally compiled for the C8G speed grade may not meet timing if the C7G is substituted without recompiling the design with the correct speed grade setting. The C7G is faster, so it will generally meet or exceed the timing of the C8G, but the design should be recompiled and timing-verified for the C7G to ensure correct operation.
What is the operating temperature range for both the 10M40DAF256C8G and 10M40DAF256C7G?
Both devices are specified for commercial temperature range operation, typically 0°C to 85°C junction temperature (TJ), as indicated by the "C" in the part number. This is consistent with Intel MAX 10 commercial-grade specifications.
Do both devices support dual-configuration flash memory?
Yes. Both the 10M40DAF256C8G and 10M40DAF256C7G are MAX 10 devices with the "D" designation indicating dual-configuration flash memory. This allows the device to store two configuration images and support features such as instant-on operation and dual-boot capability.
What are the logic density and memory resources of the 10M40DAF256C8G and 10M40DAF256C7G?
Both devices feature 40,000 logic elements (LEs), which is indicated by the "40" in the part number. They also include embedded memory blocks and user flash memory as per the Intel MAX 10 10M40 device specifications. The logic density and memory resources are identical between the two speed grades.
Which speed grade should be selected for a new design, the 10M40DAF256C8G or the 10M40DAF256C7G?
The selection depends on the timing requirements of the design. The 10M40DAF256C7G offers faster performance and is suitable for designs with tighter timing constraints. The 10M40DAF256C8G is a lower-cost option for designs that can meet timing at the slower speed grade. Intel's timing models and datasheets should be consulted to verify that the chosen speed grade meets all design timing requirements.
Are the 10M40DAF256C8G and 10M40DAF256C7G RoHS compliant?
Yes. Both devices are offered in RoHS-compliant packages as part of Intel's environmental compliance program. The "G" suffix in the part number indicates RoHS compliance and lead-free packaging. Detailed compliance information is available in Intel's product material declarations.