Part A
10M40DAF256I7G
訊息
- Lifecycle
- Active
- Stock
- 5032 件
- Package
- LBGA-256
- Series
- 嵌入式FPGA（現場可程式設計閘陣列）
Replacement verdict
Compatible functional replacement candidate
The 10M40DAF256C8G and 10M40DAF256I7G are functionally compatible replacements, sharing identical logic density, package, and I/O configuration, with the primary distinction being the operating temperature grade. The I7G variant offers an extended industrial temperature range, making it suitable for more demanding environments, while the C8G variant is optimized for commercial applications. Both devices are viable substitutes, provided the target application's thermal requirements are carefully validated against the chosen grade.
Logic Density
High match
Package Type
High match
I/O Count
High match
Operating Temperature
Validation required
Parts at a glance
Part B
10M40DAF256C8G
訊息
- Lifecycle
- Active
- Stock
- 5091 件
- Package
- LBGA-256
- Series
- 嵌入式FPGA（現場可程式設計閘陣列）
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 | 10M40DAF256I7G | Why it matters |
|---|---|---|---|
| Operating Temperature Range | 0°C to 85°C (Commercial) | -40°C to 100°C (Industrial) | Determines the environments in which the device can reliably operate; industrial grade is required for harsh or outdoor applications. |
| Speed Grade | 8 | 7 | A lower speed grade number indicates faster maximum operating frequency and tighter timing, affecting achievable system performance. |
| Logic Elements (LEs) | 40000 | 40000 | Defines the available programmable logic capacity for implementing custom digital functions. |
| Package | 256-pin FBGA | 256-pin FBGA | Must match the PCB footprint and assembly process for a drop-in replacement. |
| Supply Voltage | 1.2 V core | 1.2 V core | Core voltage must be compatible with the board power design to ensure correct operation. |
| Embedded Memory | 1260 kbit M9K | 1260 kbit M9K | On-chip memory capacity affects buffering, data storage, and implementation of memory-intensive functions. |
| Number of I/O Pins | 178 | 178 | I/O count determines how many external signals and peripherals the device can interface with. |
| Embedded Multipliers (18x18) | 116 | 116 | Hardware multipliers are essential for efficient DSP, filtering, and arithmetic-intensive designs. |
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 | 10M40DAF256I7G | 10M40DAF256C8G |
|---|---|---|
| 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 | -40°C ~ 100°C (TJ) | 0°C ~ 85°C (TJ) |
Frequently asked questions
What are the 10M40DAF256C8G and 10M40DAF256I7G devices?
Both are Intel (formerly Altera) MAX 10 field-programmable gate array (FPGA) devices in the 10M40 family, featuring 40,000 logic elements (LEs) and packaged in a 256-ball FineLine BGA (FBGA) package. The suffix C8G denotes commercial temperature grade and speed grade 8, while I7G denotes industrial temperature grade and speed grade 7.
What is the difference between the C8G and I7G suffixes?
The C8G suffix indicates a commercial temperature range (typically 0°C to 85°C junction temperature) with speed grade 8, while the I7G suffix indicates an industrial temperature range (typically -40°C to 100°C junction temperature) with speed grade 7. Speed grade 7 is faster than speed grade 8 in the MAX 10 family.
Are the 10M40DAF256C8G and 10M40DAF256I7G pin-compatible?
Yes. Both devices share the same 256-ball FBGA package with identical pinouts as defined by the Intel MAX 10 device pin-out specifications. The package and pin assignments are the same; only the temperature grade and speed grade differ.
Can the 10M40DAF256C8G be used as a drop-in replacement for the 10M40DAF256I7G?
Not directly in all cases. While the package and pinout are identical, the industrial-grade I7G device is specified for a wider temperature range and a faster speed grade. A commercial-grade C8G device may not meet the timing or environmental requirements of a design validated for the I7G. Replacement requires re-validation of timing, power, and thermal margins against the target application.
What are the typical operating temperature ranges for these two devices?
The 10M40DAF256C8G is rated for commercial operation, typically 0°C to 85°C junction temperature (TJ). The 10M40DAF256I7G is rated for industrial operation, typically -40°C to 100°C junction temperature (TJ). These ranges are defined in the Intel MAX 10 device datasheet.
Do both devices support the same configuration and embedded features?
Yes. Both are members of the MAX 10 10M40 device family and support the same architectural features, including internal configuration flash, analog-to-digital converter (ADC) blocks, and user flash memory. The differences are limited to temperature grade and speed grade, not functional capability.
Which device is better for a design that must operate below 0°C?
The 10M40DAF256I7G is the appropriate choice for operation below 0°C, as its industrial temperature grade supports a junction temperature range extending to -40°C. The 10M40DAF256C8G commercial grade is not specified for sub-zero operation.
Does the speed grade difference affect power consumption?
Speed grade can influence dynamic power consumption because faster devices may allow higher operating frequencies or may have different core timing characteristics. However, actual power consumption depends on the specific design, clock frequencies, and resource utilization. Intel PowerPlay or the Early Power Estimator (EPE) tool should be used with the correct device grade to obtain accurate power estimates.