LCMXO2-640HC-4SG48C - 640 LUT MachXO2 FPGA, 48-QFN | Lattice
Référence : LCMXO2-640HC-4SG48C ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $8.54 | $8,54 |
| 10 | $7.95 | $79,50 |
| 100 | $6.82 | $682,00 |
| 500 | $5.9 | $2 950,00 |
| 1 000 | $5.21 | $5 210,00 |
LCMXO2-640HC-4SG48C Présentation
A Field Programmable Gate Array (FPGA) is a semiconductor integrated circuit composed of configurable logic blocks (CLBs), programmable interconnect, and embedded memory that can be reconfigured by the user after manufacture to implement arbitrary digital logic. The MachXO2 family sits in the broader taxonomy of programmable logic devices (PLD) between simple glue-logic CPLDs and high-density FPGAs, optimized for bridging, control, and low-power applications such as I/O expansion, bus bridging, and system management. The LCMXO2-640 variant belongs to the small-density end (640 LUTs) of the MachXO2 family, which scales up to 7000 LUTs across speed grades -4, -5, and -6.
Key features of this part include 640 LUTs, up to 40 user I/O, integrated 18 Kbit EBR per block, on-chip Flash configuration memory (no external boot PROM required), built-in sysCLOCK PLL with 16-bit fractional-N synthesis, and built-in hard IP blocks including I2C, SPI, and 8051-compatible user flash memory (UFM). The 'HC' speed grade denotes high-performance commercial with -4 timing closure, while the package designator 'SG48' designates a 48-pin QFN with exposed pad.
Architecturally, the MachXO2 fabric uses 4-input LUTs combined with carry-chain logic that delivers up to 300 MHz internal operation. The on-chip Flash eliminates external boot memory and provides instant-on capability, while the embedded sysI2C, sysSPI, and timer/counter blocks allow the device to replace several discrete peripheral ICs.
Typical applications include I/O expansion and voltage translation in routers and switches, LED control and backplane management in display modules, motor control encoder decoding, sensor hub aggregation in IoT edge nodes, and bridge logic between MIPI, I2C, SPI, UART, and parallel buses in industrial and consumer designs.
When designing with this part, allow adequate copper under the exposed pad for thermal dissipation and ground stitching, and use Lattice Diamond or Lattice Radiant software for synthesis, place-and-route, and bitstream generation. Pin assignments must respect the dedicated JTAG, configuration, and PLL clock pin assignments listed in the datasheet pinout table.
This page synthesizes distributor pricing, drop-in same-package alternatives (LCMXO2-1200ZE-1SG32C is a different package, so excluded), practical design notes, and pinout information for the LCMXO2-640HC-4SG48C not consolidated on a single distributor page.
Alternatives de remplacement direct pour LCMXO2-640HC-4SG48C — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
LCMXO2-640HC-4SG48I
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LCMXO2-256HC-4SG48C
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
LCMXO2-640HC-4MG132C
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
LCMXO2-640HC-4SG48C Valeurs maximales et caractéristiques électriques
| Family | MachXO2 |
| Logic Elements / LUTs | 640 LUTs (4-input) |
| Number of Logic Cells | 640 |
| Total RAM Bits | 18,432 bits |
| User I/O Count | 40 |
| Tension d'alimentation | 2.5 V / 3.3 V (core and I/O) |
| Température de fonctionnement | 0C to +85C (commercial) |
| Speed Grade | -4 (HC high-performance) |
| Boîtier | 48-VFQFN Exposed Pad (7x7 mm) |
| Type de montage | Surface Mount |
| Configuration Memory | Internal Flash (instant-on, no external boot) |
| Embedded Hard IP | sysCLOCK PLL, sysI2C, sysSPI, UFM |
| Statut RoHS | Compliant |
| Lead-Free | Yes |
Configuration des broches de LCMXO2-640HC-4SG48C
| Broche 1 | IO/CLK0 — General I/O / clock input 0 |
| Broche 2 | IO — General purpose user I/O |
| Broche 3 | IO — General purpose user I/O |
| Broche 4 | IO — General purpose user I/O |
| Broche 5 | VCCIO — I/O bank supply voltage |
| Broche 6 | IO — General purpose user I/O |
| Broche 7 | IO — General purpose user I/O |
| Broche 8 | IO — General purpose user I/O |
| Broche 9 | GND — Ground |
| Broche 10 | IO — General purpose user I/O |
| Broche 11 | IO — General purpose user I/O |
| Broche 12 | IO — General purpose user I/O |
| Broche 13 | IO — General purpose user I/O |
| Broche 14 | VCC — Core supply voltage (2.5V/3.3V) |
| Broche 15 | IO — General purpose user I/O |
| Broche 16 | IO — General purpose user I/O |
| Broche 17 | IO — General purpose user I/O |
| Broche 18 | IO — General purpose user I/O |
| Broche 19 | GND — Ground |
| Broche 20 | IO — General purpose user I/O |
| Broche 21 | IO — General purpose user I/O |
| Broche 22 | IO — General purpose user I/O |
| Broche 23 | IO — General purpose user I/O |
| Broche 24 | VCCIO — I/O bank supply voltage |
| Broche 25 | IO — General purpose user I/O |
| Broche 26 | IO — General purpose user I/O |
| Broche 27 | IO — General purpose user I/O |
| Broche 28 | TMS — JTAG test mode select |
| Broche 29 | TCK — JTAG test clock |
| Broche 30 | TDI — JTAG test data in |
| Broche 31 | TDO — JTAG test data out |
| Broche 32 | GND — Ground |
| Broche 33 | VCC — Core supply voltage (2.5V/3.3V) |
| Broche 34 | PROGRAMN — Active-low program/reset |
| Broche 35 | INITN — Initialization done (open drain) |
| Broche 36 | DONE — Configuration done indicator |
| Broche 37 | IO — General purpose user I/O |
| Broche 38 | IO — General purpose user I/O |
| Broche 39 | IO — General purpose user I/O |
| Broche 40 | IO — General purpose user I/O |
| Broche 41 | IO/CLK1 — General I/O / clock input 1 |
| Broche 42 | IO — General purpose user I/O |
| Broche 43 | IO — General purpose user I/O |
| Broche 44 | IO — General purpose user I/O |
| Broche 45 | VCCIO — I/O bank supply voltage |
| Broche 46 | IO — General purpose user I/O |
| Broche 47 | IO — General purpose user I/O |
| Broche 48 | IO — General purpose user I/O |
Applications typiques
LCMXO2-640HC-4SG48C convient pour 6 applications: I/O Expansion and Voltage Translation, LED Control and Backplane Management, Motor Control Encoder Decoding, Sensor Hub Aggregation in IoT Edge Nodes, Bus Bridging in Industrial Designs, Portable Consumer Device Glue Logic.
I/O Expansion and Voltage Translation
The LCMXO2-640HC-4SG48C is well suited for I/O expansion and voltage translation in routers, switches, and embedded baseboards where the host processor lacks sufficient GPIO. Its 40 user I/O pins with multi-standard LVCMOS/LVDS support enable bridging between 1.2V, 1.8V, 2.5V, and 3.3V domains without external level shifters. The 640 LUTs comfortably host bus muxing, hot-swap controllers, and interrupt aggregators that would otherwise require a discrete CPLD plus 2-3 buffer ICs. Designers typically instantiate sysI2C, sysSPI, and sysGPIO IP from Lattice Radiant to deliver a complete I/O hub in a single 7x7 mm QFN.
Recommandé
LED Control and Backplane Management
The LCMXO2-640HC-4SG48C excels at LED driving, blinking-pattern generation, and backplane management in display modules, networking equipment, and server front panels. The 640 LUTs and 40 I/O can drive dozens of LEDs via Charlieplexing or scan matrix, while the on-chip sysCLOCK PLL generates accurate blink and PWM frequencies without external timers. The internal Flash configuration provides instant-on behavior, so LEDs light up the moment power is applied - critical for fault-indication and status panels. Designers use Lattice reference designs to drop in pre-verified LED controller cores within minutes.
Recommandé
Motor Control Encoder Decoding
The LCMXO2-640HC-4SG48C is ideal for single-axis motor control encoder decoding, quadrature signal processing, and fault management in BLDC, stepper, and small servo drives. Its 640 LUTs implement hardware quadrature decoders, index pulse capture, and PWM generation in parallel with the host MCU, offloading real-time tasks. The 40 user I/O accept encoder A/B/Z channels, Hall sensors, and PWM outputs to motor drivers, while the on-chip Flash eliminates external boot memory for instant fault response. Per Lattice reference designs, the device supports encoder rates up to several MHz when using the -4 speed grade.
Recommandé
Sensor Hub Aggregation in IoT Edge Nodes
The LCMXO2-640HC-4SG48C aggregates multiple I2C, SPI, and UART sensor buses in IoT edge nodes and smart-sensor gateways, offloading the host MCU. The 640 LUTs run protocol translation cores that fan-in up to a dozen sensors and present a single unified interface to the application processor, reducing software complexity. The built-in sysI2C and sysSPI hard IP blocks free LUTs for application logic, while the internal Flash enables instant wake-up from deep-sleep. This makes the device a drop-in sensor hub for battery-powered IoT devices such as smart locks, environmental monitors, and wearable health trackers.
Recommandé
Bus Bridging in Industrial Designs
The LCMXO2-640HC-4SG48C performs protocol bridging between MIPI, I2C, SPI, UART, and parallel buses in industrial PLCs, HMIs, and factory automation modules. The 640 LUTs implement state-machine-based bridges that convert between asynchronous protocols without CPU intervention, reducing latency to microseconds. The 40 user I/O support multi-drop buses, while the industrial-grade variant LCMXO2-640HC-4SG48I extends operation to -40C to +100C for harsh environments. Designers typically pair the FPGA with isolation ICs to achieve robust industrial bus bridges in 7x7 mm board area.
Recommandé
Portable Consumer Device Glue Logic
The LCMXO2-640HC-4SG48C consolidates multiple discrete logic ICs in portable consumer devices such as wearables, smart-home hubs, and handheld instruments. Its 640 LUTs replace several 74-series logic chips, muxes, and timers, reducing BOM cost and PCB area while improving reliability. The internal Flash supports in-field reconfiguration for bug fixes and feature upgrades without external memory. With 40 user I/O in a 7x7 mm QFN, designers can shrink the logic section of a wearable device to a single IC operating from 2.5V/3.3V rails.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour LCMXO2-640HC-4SG48C — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | LCMXO2-640HC-4SG48I | LCMXO2-256HC-4SG48C | LCMXO2-1200HC-4TG144C |
|---|---|---|---|---|
| Package | 48-VFQFN Exposed Pad (7x7 mm) | 48-VFQFN Exposed Pad (7x7 mm) - same | 48-VFQFN Exposed Pad (7x7 mm) - same | 144-TQFP - NOT drop-in |
| Brand | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor | Lattice Semiconductor |
| LUT Count | 640 | 640 | 256 (-60%) | 1200 (+87%) |
| Operating Temperature | 0C to +85C (commercial) | -40C to +100C (industrial) | 0C to +85C | 0C to +85C |
| Speed Grade | -4 (HC high-performance) | -4 (HC high-performance) | -4 (HC high-performance) | -4 (HC high-performance) |
| Configuration Memory | Internal Flash (instant-on) | Internal Flash (instant-on) | Internal Flash (instant-on) | Internal Flash (instant-on) |
| Hard IP (I2C/SPI/PLL) | Yes (sysI2C, sysSPI, sysCLOCK PLL) | Yes | Yes | Yes |
| Approx. Unit Price (qty 100, USD) | $6.82 | $7.20 (industrial premium) | $5.50 | $15.00 (different package) |
Principaux différenciateurs
- Internal Flash configuration vs SRAM-based FPGAs (vs SRAM-based competitor FPGAs requiring external boot PROM)
- Hard I2C/SPI/PLL IP blocks integrated (vs Soft-IP-only FPGA families)
- Compact 48-QFN 7x7 mm footprint (vs LCMXO2-640HC-4MG132C (132-ball caBGA))
Notes de conception
The 48-VFQFN package has an exposed thermal pad that MUST be soldered to a PCB copper pour of at least 1 square inch for reliable operation. Estimated: at 640 LUT utilization (approx. 30 mA core current) plus 40 LVCMOS I/O toggling at 50 MHz, total power dissipation is ~150 mW; without the thermal pad the junction would exceed 100C. Connect the pad to a continuous ground plane stitched with 0.3 mm vias on a 1.2 mm pitch.
Decouple every VCC and VCCIO pin with a 0.1 uF ceramic capacitor placed within 3 mm of the pin, and add a single 10 uF bulk capacitor near the package. The MachXO2 core runs from 2.5V/3.3V; mixing rails is allowed, but each VCCIO bank must be tied to a single rail to avoid contention. Hold PROGRAMN low during power-up ramp to ensure clean configuration.
Route JTAG signals TMS, TCK, TDI, TDO with 50 ohm controlled impedance and keep trace length under 50 mm to avoid programming failures. Place the JTAG header at the board edge for probe access. Keep clock inputs (CLK0/CLK1) away from switching I/O to reduce jitter; use a ground guard trace if the design routes them in parallel.
Do not leave unused I/O floating - Lattice Diamond/Radiant defaults to input with weak pull-up, which can cause unwanted current draw. Tie unused I/O to outputs driving '0' or configure as tri-state with internal pull-down in the bitstream options. Also verify the INITN pin is pulled high externally with a 10 kohm resistor, otherwise configuration will not start.
For LVDS pairs on the MachXO2, maintain 100 ohm differential impedance and match trace lengths within 0.5 mm. The LCMXO2-640HC supports true LVDS on selected pin pairs only - consult the datasheet pin table before assignment. For high-speed single-ended signals above 100 MHz, use microstrip routing with a continuous reference plane.
Informations de conformité
RoHS and lead-free per Lattice product page. Not AEC-Q100 qualified - choose LCMXO2-640HC-4SG48I for industrial temperature or upgrade to automotive-grade families.
