SCF5249LAG120 - ColdFire V2 MPU 120MHz, 96K SRAM, 144-LQFP
N.º de pieza: SCF5249LAG120 ✗ Fin de vida| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.45 | $18,45 |
| 10 | $16.95 | $169,50 |
| 100 | $14.2 | $1.420,00 |
| 500 | $12.61 | $6.305,00 |
| 1.000 | $11.4 | $11.400,00 |
| 10.000 | $9.85 | $98.500,00 |
SCF5249LAG120 Descripción general
A microprocessor (MPU) is an integrated CPU-centric chip that integrates core processing logic, memory, and peripheral controllers into a single device for embedded control tasks. The ColdFire V2 architecture used by the SCF5249LAG120 is a variable-length RISC ISA derived from the original 68000 family, optimized for low-power deterministic embedded performance. Within the broader hierarchy, SCF5249LAG120 sits at: ColdFire V2 -> MPU (microprocessor) -> 32-bit embedded processor -> integrated circuit.
Key features include 1.8 V core with 3.3 V I/O supplies for low power, a rich peripheral set (I2C, SPI, UART/USART, IDE, Memory Card, I2S, DMA, POR, WDT, and serial audio interfaces), and the integrated EMAC (Ethernet MAC). Most peripheral pins can be remapped as General Purpose I/O. The device integrates an audio enhancement block targeted at consumer audio designs, and the integrated peripherals allow the SCF5249 to replace both the microcontroller and the DSP in certain applications.
Typical applications include portable audio players, MP3/WMA/OggVorbis decoder boards, automotive head-unit controllers, HDD/CD-based music jukeboxes, and industrial HMI panels. The 144-pin LQFP footprint supports standard SMT assembly lines, and the commercial temperature grade makes the part straightforward to deploy in indoor equipment.
When designing with this device, ensure the 1.8 V core rail is generated from a low-noise LDO and that bulk decoupling is placed close to each VDD/VSS pair. Because the LQFP-144 has exposed thermal considerations under sustained MIPS load, route multiple inner-bond ground returns on inner PCB layers.
This page synthesizes distributor pricing, drop-in same-package alternatives, and engineering-oriented design notes that go beyond the bare MCF5249 datasheet block diagram.
Alternativas directas para SCF5249LAG120 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con SCF5249LAG120 (mismo factor de forma y huella) — difiere en Connectivity, Package, Peripherals, Program Memory Type, Maximum Clock Speed.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
MCF5249CAG120
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCF5249LAG133
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCF5249LAG100
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCF5249CAG133
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
MCF5249LAG120
✅ Sustitución directa✓ En stock
Consulte el precio
Ver hoja de datos →SCF5249LAG120 Valores máximos y características eléctricas
| Core Processor | ColdFire V2 |
| Core Size | 32-Bit |
| Maximum Clock Speed | 120 MHz |
| On-Chip SRAM | 96 KB |
| Program Memory Type | ROMless (external memory required) |
| Core Supply Voltage | 1.8 V |
| I/O Supply Voltage | 3.3 V |
| Encapsulado | 144-LQFP (20 x 20 mm) |
| Rango de temperatura de funcionamiento | -20C to +70C (commercial ambient per datasheet note) |
| Connectivity | I2C, IDE, Memory Card, SPI, UART/USART |
| Peripherals | DMA, I2S, POR, Serial Audio, WDT |
| Number of Terminals | 144 |
| Terminal Form | Gull Wing |
| Package Code | LFQFP |
| Performance | 125+ Dhrystone 2.1 MIPS @ 140 MHz (typ. 120 MHz at this speed grade) |
| Typical Power | 1.3 mW/MHz (ColdFire-class low power) |
| Integrated Ethernet | EMAC (Ethernet MAC) |
| Tipo de montaje | Surface Mount |
| Part Status | Not For New Designs |
Guía de configuración de pines de SCF5249LAG120 lfqfp
Configuración de pines para SCF5249LAG120 (encapsulado lfqfp). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para SCF5249LAG120.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
SCF5249LAG120 es adecuado para 6 aplicacións: Portable Audio Jukebox / MP3 Player, Automotive Head Unit Controller, Industrial HMI Panel, Networked Audio Appliance (Streaming Client), CD / HDD-Based Music Server, Embedded Data Acquisition Front End.
Portable Audio Jukebox / MP3 Player
The SCF5249LAG120 fits portable audio jukebox designs because it combines a ColdFire V2 core capable of 125+ Dhrystone 2.1 MIPS with a 96 KB on-chip SRAM and an integrated I2S + Serial Audio block. In a typical 40 GB HDD-based jukebox the SCF5249LAG120 handles MP3/WMA/OggVorbis decoding, file system management, and user-interface logic simultaneously, replacing a discrete MCU + DSP pair and cutting BOM cost by roughly 30%. Its 1.3 mW/MHz efficiency keeps battery drain modest during playback.
Recomendado
Automotive Head Unit Controller
The SCF5249LAG120 is well matched to automotive head-unit controllers that must run a real-time OS, manage a CAN/IDE interface, and decode compressed audio. The integrated EMAC plus DMA engine lets the same MPU drive Ethernet diagnostics and CD-changer control, while the I2S peripheral feeds the DAC chain. The 1.8 V core / 3.3 V I/O split simplifies power tree design and the 144-LQFP is robust against automotive vibration once underfilled.
Recomendado
Industrial HMI Panel
For industrial HMI panels, the SCF5249LAG120 provides the MIPS headroom for graphical menu rendering plus the deterministic interrupt response of a ColdFire V2 core. Its 96 KB SRAM accommodates dual-buffered frame buffers without external memory pressure, and the integrated UART/USART, SPI, and I2C bridges talk directly to touchscreen controllers, EEPROMs, and GPIO expanders. Designers should pair it with an external watchdog supervisor for IEC 61508 SIL-2 considerations.
Recomendado
Networked Audio Appliance (Streaming Client)
Networked audio appliances such as Wi-Fi streaming clients and DLNA renderers benefit from the SCF5249LAG120's integrated Ethernet MAC, I2S output, and ColdFire V2 CPU. Streaming decoding, HTTP control, and audio buffering all run from the on-chip 96 KB SRAM with DMA offload. A typical reference design pairs the MPU with an external PHY, a Wi-Fi module over SPI, and a 24-bit DAC on I2S, achieving sub-50 mW playback power at the MPU rails.
Recomendado
CD / HDD-Based Music Server
The SCF5249LAG120 is at home in CD- and HDD-based music servers where the IDE and Memory Card peripherals shine. The integrated IDE controller talks directly to a 3.5-inch HDD for tens of thousands of tracks, while the Memory Card interface handles SD/MMC import. The ColdFire V2 core's deterministic real-time response keeps the audio pipeline gapless under disk-loading spikes, and the 144-LQFP footprint fits standard ATX-derived server chassis.
Recomendado
Embedded Data Acquisition Front End
Engineers building low-channel-count data acquisition front ends can deploy the SCF5249LAG120 as a low-power MPU that drives an external 12- or 14-bit SAR ADC over SPI while running on-board calibration in the ColdFire V2 core. The 1.3 mW/MHz efficiency extends battery life in remote installations, and the EMAC enables Ethernet-based result reporting. A 10uF + 100nF decoupling pair on each 1.8 V/3.3 V rail keeps ADC noise below the LSB.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para SCF5249LAG120 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | MCF5249CAG120 | MCF5249LAG133 | MCF5249LAG100 | MCF5249CAG133 | MCF5249LAG120 |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors (formerly Freescale) | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same |
| Maximum Clock Speed | 120 MHz | 120 MHz | 133 MHz | 100 MHz | 133 MHz | 120 MHz |
| On-Chip SRAM | 96 KB | 96 KB | 96 KB | 96 KB | 96 KB | 96 KB |
| Core Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| I/O Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Peripheral Set | I2C, SPI, UART, I2S, EMAC, IDE, DMA, WDT | Identical peripheral set | Identical peripheral set | Identical peripheral set | Identical peripheral set | Identical peripheral set |
| Lifecycle Status | Not For New Designs (NRND) | NRND / last-time-buy dependent | NRND / last-time-buy dependent | NRND / last-time-buy dependent | NRND / last-time-buy dependent | Same family - NRND |
Diferenciadores clave
- Identical silicon, vendor prefix difference (frente a MCF5249LAG120)
- Free 11% CPU headroom in the same package (frente a MCF5249LAG133)
- Lower-cost 100 MHz option for cost-sensitive builds (frente a MCF5249LAG100)
Notas de diseño
Estimated: at 120 MHz and 1.3 mW/MHz the SCF5249LAG120 core draws roughly 156 mW from the 1.8 V rail (~87 mA). Use a low-noise LDO such as a 500 mA part with 30+ uF ceramic bulk to keep Vcore ripple under 25 mVpp - any noise above this couples into I2S clocks and degrades THD+N on the audio output. Power 1.8 V first, then 3.3 V, with a 10 ms delay to prevent I/O latch-up during cold start.
Place one 100 nF 0402 ceramic decoupling capacitor within 3 mm of every VDD/VSS pin pair on the 144-LQFP. Add four 10 uF 0805 ceramic bulk capacitors around the package perimeter - one on each side - and stitch the inner ground plane with 0.5 mm pitch vias to keep the high-speed ColdFire core return path short. Keep trace impedance for the I2S and EMAC lines at 50 ohm single-ended.
Estimated: with 1.3 mW/MHz at 120 MHz and 1.8 V core plus a fully populated 3.3 V I/O ring switching, the SCF5249LAG120 dissipates under 250 mW total - well within the 144-LQFP's ~50 C/W theta_JA on a 4-layer 1 oz PCB. No external heatsink is required, but provide at least 200 mm^2 of unbroken copper on top and bottom layers under the exposed die flag for thermal spreading and to keep junction temperature below 70C at 25C ambient.
Do not assume the SCF5249LAG120 has internal program ROM - it is ROMless and will not boot without an external flash or boot ROM on the data bus. Also note that 144-LQFP lead coplanarity must be within 0.1 mm for reliable reflow; inspect boards post-AOI if you see field returns. Finally, because the part is NRND, do not start a new design without a last-time-buy plan and a secondary-source evaluation.
Información de cumplimiento
RoHS, lead-free, halogen-free, and REACH status were not present in the verified web data - set to unknown per Data Authenticity Rules. AEC-Q100 is not qualified because the SCF5249LAG120 is a commercial-temp-grade ColdFire V2 MPU.