OR2T40A6PS240-DB - ORCA 2 FPGA, 3600 Cells, 240-BFQFP | Lattice
MPN: OR2T40A6PS240-DB ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $85.5 | $85.50 |
| 10 | $76.95 | $769.50 |
| 100 | $68.4 | $6,840.00 |
| 500 | $59.85 | $29,925.00 |
| 1,000 | $51.3 | $51,300.00 |
OR2T40A6PS240-DB Overview
A field-programmable gate array (FPGA) is a type of programmable logic device that combines an array of configurable logic blocks (CLBs), programmable interconnects, and programmable I/O cells around a central SRAM or antifuse configuration memory, allowing digital designers to implement custom logic without manufacturing a custom ASIC. Within the broader taxonomy, an FPGA sits below the Programmable Logic Device (PLD) superfamily and above fixed-function ASICs, while being a sibling of CPLDs (Complex PLDs) - the difference being that FPGAs use finer-grained logic elements distributed across a wider interconnect fabric. The ORCA 2 family is Lattice's second-generation SRAM-based FPGA, predating the migration to ispXPGA / LatticeECP / ECP2/3/4/5 modern families.
Key features include 900 Configurable Logic Blocks (CLBs), 240-pin BFQFP exposed-pad package with gull-wing leads, 0.3 µm CMOS technology, 3.3 V core/IO supply, 184 maximum user I/Os, 3600 logic cells, and a Die Revision -DB variant. The "OR2T40A6" prefix encodes the family (ORCA 2), the cell count (T40 ≈ 3,600 cells), the speed grade (-6), the voltage (3.3 V), and the package designator (PS240 = Power-SQFP 240 pins). The "-DB" suffix is a special die-revision / quality mark used for Lattice distributor-channel stock.
The OR2T40A6 architecture uses SRAM-based configuration memory distributed throughout the die, allowing unlimited reconfiguration, in-system programming through JTAG, and ISE-style tool flows. The rich interconnect fabric and block-RAM/PLL resources of this generation made the part suitable for ASIC prototyping, custom bus bridges, and DSP pre-processing pipelines. The 294.12 MHz system clock target confirms high-speed datapath capability for the era.
Typical applications include telecom interface glue logic, bus bridges and protocol converters (e.g., PCI to local bus, Utopia to SPI), ASIC prototyping and emulation platforms, embedded controller cores, and industrial automation controllers. The 184 available I/Os make the part well-suited to bus-heavy designs that need to aggregate multiple peripheral interfaces.
When designing with this device, ensure that the 3.3 V supply is well decoupled (at least 0.1 µF ceramic plus a bulk tantalum or polymer) within 1 cm of each power pin and that the exposed-pad is soldered to a contiguous ground copper pour. Configuration loading through JTAG or Slave Serial mode should follow Lattice's ORCA Series 2 programming reference manual.
This page synthesizes distributor pricing, drop-in alternatives (OR2T40A7PS240-DB speed-grade upgrade and OR2T40A6PS240I-DB industrial-temp variant), and practical design notes not found in the standalone datasheet.
Drop-in alternatives for OR2T40A6PS240-DB — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
OR2T40A7PS240-DB
✅ Drop-In📋 Reference alternative (not in catalog)
OR2T40A6PS240I-DB
✅ Drop-In📋 Reference alternative (not in catalog)
OR2T40A6PS240
✅ Drop-In📋 Reference alternative (not in catalog)
OR2T40A6PS240-DB
✅ Drop-In✓ In Stock
$51.3 / Unit
View Datasheet →OR2T40A6PS240-DB Maximum Ratings & Electrical Characteristics
| Product Type | FPGA - Field Programmable Gate Array |
| Family | ORCA Series 2 |
| Number of Logic Cells / Gates | 3600 cells / 57600 gates |
| Number of Configurable Logic Blocks (CLBs) | 900 CLBs |
| Number of Logic Elements | 3600 |
| Process Technology | 0.3 µm CMOS |
| Supply Voltage | 3.3 V |
| Operating Frequency (max) | 294.12 MHz |
| Package / Case | 240-BFQFP Exposed Pad (SQFP2-240 / PQFP240) |
| Package Code | FQFP |
| Package Shape | Square Flat Pack (SQFP2) |
| Terminal Form | Gull Wing |
| Number of Terminals | 240 |
| Operating Temperature Grade | Commercial (DB-suffix variant) |
| Mounting Type | Surface Mount |
| Configuration Memory | SRAM-based, in-system programmable via JTAG |
| Die Revision | DB |
OR2T40A6PS240-DB square flat pack (sqfp2) Pin Configuration Guide
Pin configuration for OR2T40A6PS240-DB (square flat pack (sqfp2) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for OR2T40A6PS240-DB.
Refer to the datasheet for full pin configuration.
Typical Applications
OR2T40A6PS240-DB is suitable for 6 applications: Telecom Interface / Bus-Bridge Glue Logic, ASIC Prototyping and Emulation, Industrial Automation Controllers, Legacy Test and Measurement Instrumentation, Embedded System Glue Logic / North-South Bridges, DSP Pre-Processing / FIR Filter Pipelines.
Telecom Interface / Bus-Bridge Glue Logic
The OR2T40A6PS240-DB is well suited to legacy telecom and datacom glue-logic functions where it sits between standard bus interfaces (PCI, Utopia, SCI, SPI) and a host ASIC or processor. With 3,600 logic cells, 184 user I/Os, and 3.3 V LVCMOS/LVTTL I/O compatibility, the device can implement protocol converters, FIFOs, and bus-state machines without forcing the host ASIC through a re-spin. Designers benefit from in-system JTAG re-programmability to iterate on protocol bridges without NRE. Pair with a low-jitter 3.3 V oscillator and route all 184 I/Os into controlled-impedance traces for 50-100 MHz bus interfaces.
Recommended
ASIC Prototyping and Emulation
With 3,600 logic cells and 184 I/Os, the OR2T40A6PS240-DB serves as a small-scale ASIC prototype target for validating custom logic before committing to a mask set. The SRAM-based configuration memory allows unlimited design revisions during prototype bring-up, and the 240-BFQFP exposed-pad package exposes enough I/O to mimic medium-complexity ASIC signal counts. Bitstream loading via JTAG keeps iteration fast. Stack multiple OR2T40A6 parts on a multi-FPGA emulation board using LVDS inter-FPGA links for ASIC prototypes up to 10K-20K equivalent gates.
Recommended
Industrial Automation Controllers
The OR2T40A6PS240-DB - particularly the -I (industrial) suffix variant - fits embedded controllers for PLCs, motor-control gateways, and field-bus bridges in factory automation. 184 I/Os accommodate multiple encoder counters, PWM channels, and serial-field-bus interfaces (Modbus, Profibus, CAN) within a single device. At 3.3 V with 0.3 µm CMOS, the part draws limited standby current and tolerates industrial supply transients. For outdoor cabinets, prefer the OR2T40A6PS240I-DB; pair with a 3.3 V supervisor and isolated RS-485 transceivers.
Recommended
Legacy Test and Measurement Instrumentation
Vintage test equipment and lab-instrument designs often use OR2T40A6PS240-DB FPGA fabric for pattern generation, parallel data acquisition, and custom timing sequencers. The 294.12 MHz internal Fmax budget and abundant 184 I/Os drive multi-channel pattern-generators and logic-analyzer capture engines at modest channel counts. JTAG in-system programming simplifies lab bring-up. Replace obsoleted units from Agilent / Tek legacy chassis by checking the bitstream compatibility against the OR2T40A7PS240-DB drop-in.
Recommended
Embedded System Glue Logic / North-South Bridges
In mid-complexity embedded designs, the OR2T40A6PS240-DB replaces multiple discrete 74-series logic ICs and PALs with a single programmable device, simplifying PCB layout and reducing BOM cost. 184 user I/Os cover typical north/south bridge tasks - chip-select decoding, wait-state generation, DMA arbitration, and interrupt steering - around an embedded CPU/MCU. The SRAM configuration memory allows field upgrades through JTAG. Use the OR2T40A6PS240I-DB for industrial embedded systems requiring wide-temperature operation.
Recommended
DSP Pre-Processing / FIR Filter Pipelines
Thanks to its 3,600-cell fabric and 184 I/O bandwidth, the OR2T40A6PS240-DB implements FIR filters, correlators, and down-converter datapaths for narrowband DSP front-ends (e.g., audio baseband, low-IF receivers). Distributed block RAM and fast carry chains deliver 100+ MHz sample rates on parallel multi-bit datapaths. Pair with an external ADC at the I/O pins and a DAC at the output for SDR-style signal chains. The OR2T40A7PS240-DB is the speed-graded drop-in when extra Fmax margin is required.
Recommended
Recommended Products Summary
Engineering reference data for OR2T40A6PS240-DB — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OR2T40A7PS240-DB | OR2T40A6PS240I-DB | OR2T40A6PS240 |
|---|---|---|---|---|
| Brand | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor (Lucent-era marking) |
| Package | 240-BFQFP Exposed Pad (SQFP2-240 / PQFP240) | 240-BFQFP Exposed Pad (SQFP2-240) | 240-BFQFP Exposed Pad (SQFP2-240) | 240-BFQFP Exposed Pad (SQFP2-240) |
| Speed Grade | A6 | A7 (faster) | A6 (same as target) | A6 (same as target, legacy marking) |
| Operating Temperature | Commercial (0 to +70 C) | Commercial (0 to +70 C) | Industrial (-40 to +85 C) | Commercial (0 to +70 C) |
| Logic Cells | 3,600 | 3,600 | 3,600 | 3,600 |
| User I/Os | 184 (326 Mouser marketing figure) | 184 | 184 | 184 |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Max Internal Frequency | 294.12 MHz | Higher (A7 bin) - revalidate timing | 294.12 MHz | 294.12 MHz |
| Process Technology | 0.3 µm CMOS | 0.3 µm CMOS | 0.3 µm CMOS | 0.3 µm CMOS |
| Lifecycle | Obsolete (Rochester Electronics long-term supply) | Obsolete (Rochester Electronics) | Obsolete (Rochester Electronics) | Obsolete (Lucent-era stock) |
Key Differentiators
- Higher speed grade on the same die (vs OR2T40A6PS240-DB itself)
- Extended industrial temperature range (vs OR2T40A6PS240-DB (commercial))
- Identical footprint and bitstream compatibility across all DB-marking variants (vs OR2T40A6PS240I-DB vs OR2T40A7PS240-DB)
Design Notes
The OR2T40A6PS240-DB requires a clean 3.3 V supply at up to several hundred mA depending on utilization. Place one 0.1 µF X7R ceramic bypass capacitor within 5 mm of every VCC / VCCIO pin pair, plus a single 47-100 µF tantalum or polymer bulk capacitor adjacent to the exposed-pad ground copper. Multiple internal VCC rails (VCCINT, VCCIO, VCCRAM) must each be decoupled - consult the ORCA Series 2 datasheet for the exact pin list and grouping. A common failure mode in legacy OR2T40 designs is missing bulk capacitance, which causes VCC droop during fast configuration loads.
Although the BFQFP-240 package is large enough to absorb moderate power, the small die and 0.3 µm CMOS process mean junction-to-ambient thermal resistance is non-trivial at high utilization. Solder the exposed pad to a continuous ground copper pour with thermal vias on a 1 mm pitch into an internal ground plane. Estimated: at 1 W dissipation and a typical θJA of 18-22 °C/W for a properly-poured 240-BFQFP, junction temperature rises by ~20 °C above ambient, leaving healthy margin to 70 °C commercial or 85 °C industrial operation.
The 240-BFQFP-EP has a 0.5 mm pitch and gull-wing leads on all four sides. Use a 4-layer PCB with a continuous ground plane directly under the device to control impedance of the 184 user I/Os and to provide a low-inductance return path. JTAG trace lengths must be kept below ~50 mm or buffered; place the JTAG header adjacent to the device for production programming access. Because the Lattice OR2T40A6 is SRAM-based, a configuration bitstream must be present at power-up - design the board to drive PROG_B low at cold start and let PROG be released by the configuration PROM.
Do not confuse the legacy Lucent-era OR2T40A6PS240 marking with the Lattice-Rochester OR2T40A6PS240-DB marking - they share the same die and package but channel and warranty terms differ. Do not exceed VCCIO above 3.6 V or below 3.0 V - the 0.3 µm CMOS I/Os are not 5 V tolerant. Finally, do not enable all 184 I/Os as fast LVDS simultaneously without a thermal analysis; large simultaneous-switching outputs can produce SSN that couples into adjacent JTAG and configuration pins.
Compliance Information
Compliance information is not stated in the provided distributor web data for the OR2T40A6PS240-DB. The part predates widespread RoHS-era-marking standards in the ORCA Series 2 vintage; new-old-stock may be SnPb-finished. For RoHS / lead-free requirements, request the specific compliance declaration from Rochester Electronics at the time of quotation.
