MC9328MX21CJM - i.MX21 ARM926EJ-S MPU 266MHz 289-PBGA | NXP
Référence : MC9328MX21CJM ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $18.75 | $18,75 |
| 10 | $16.92 | $169,20 |
| 100 | $15.04 | $1 504,00 |
| 500 | $13.51 | $6 755,00 |
| 1 000 | $12.18 | $12 180,00 |
MC9328MX21CJM Présentation
What is an applications processor? An applications processor is a system-on-chip (SoC) class microprocessor designed to run rich operating systems and complex application workloads, as opposed to a microcontroller that typically runs bare-metal or simple RTOS code. The i.MX21 sits within the NXP i.MX hierarchy: applications processor -> ARM9-based MPU -> Smart Speed family. It is widely deployed in early smartphones, PDAs, portable media players, and industrial HMI terminals where moderate MIPS, integrated peripherals, and Linux/Windows CE support are required.
Key features include MPEG-4 and H.263 hardware encode/decode acceleration up to CIF resolution at 30 fps, a 16/18-bit color LCD controller capable of driving SVGA panels, and USB On-The-Go with two-host-port support for direct device-to-device connectivity. The device integrates a CMOS sensor interface for camera applications, a 1-Wire interface for peripheral identification, and a synchronous serial audio interface. The on-chip video accelerator module offloads codec work from the ARM core, freeing CPU cycles for application logic.
The MC9328MX21CJM utilizes a 0.13 um CMOS process and pairs the ARM926EJ-S core with a Memory Management Unit (MMU) supporting Windows CE, Linux, and other mainstream embedded operating systems. The Smart Speed power-management architecture provides dynamic voltage and frequency scaling, allowing the core to drop to lower clock rates during idle periods to conserve battery life in handheld designs.
Typical applications include portable media players with video playback, smart-mobile handsets of the early-2000s generation, automotive telematics and infotainment head units, industrial HMI panels with TFT LCD displays, and point-of-sale terminals requiring camera and USB-host connectivity. The integrated peripherals enable single-chip BOM designs that previously required discrete controllers.
When designing with this part, allocate generous PCB area for the 289-ball PBGA escape routing and provide at least four PCB layers with dedicated power and ground planes. The 1.5 V core supply requires a low-impedance decoupling network; use 100 nF X7R ceramic capacitors within 5 mm of every supply pin pair to suppress switching transients during MPEG-4 decode bursts.
This page synthesizes distributor pricing, drop-in alternatives, and design considerations across the i.MX21 family and contemporary ARM926 parts not always covered in the manufacturer datasheet.
Alternatives de remplacement direct pour MC9328MX21CJM — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec MC9328MX21CJM (même facteur de forme et même empreinte) — différant par Core Architecture, Package.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
MC9328MX21DV
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9328MX21DVL
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9328MX21CJV
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
MC9328MX21CJM Valeurs maximales et caractéristiques électriques
| Core Architecture | ARM926EJ-S (32-bit RISC) |
| Fréquence d'horloge maximale | 266 MHz |
| Largeur du bus de données | 32 bit |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| Core Supply Voltage | 1.5 V |
| Boîtier | 289-PBGA (17x17 mm) |
| LCD Controller | 16/18-bit color, up to SVGA |
| USB Interface | USB On-The-Go (two-host port) |
| Video Accelerator | MPEG-4 / H.263 encode/decode up to CIF 30 fps |
| CMOS Sensor Interface | Yes |
| 1-Wire Interface | Yes |
| Type de montage | Surface Mount |
Guide de configuration des broches du MC9328MX21CJM 289-pbga (17x17 mm)
Configuration des broches du MC9328MX21CJM (boîtier 289-pbga (17x17 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour MC9328MX21CJM.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
MC9328MX21CJM convient pour 7 applications: Portable Media Players (PMP) with Video Playback, Early-Generation Smartphones and PDAs, Industrial Human-Machine Interface (HMI) Panels, Automotive Infotainment Head Units and Telematics, Point-of-Sale (POS) Terminals with Barcode/Camera, Portable Industrial Data Loggers with Video Capture, Embedded Linux Development Platforms and Evaluation Boards.
Portable Media Players (PMP) with Video Playback
The MC9328MX21CJM fits portable media player designs because its on-chip MPEG-4 and H.263 hardware video accelerator decodes CIF video at 30 fps without loading the ARM926EJ-S CPU, leaving MIPS for the audio pipeline and UI rendering. The 16/18-bit color LCD controller drives QVGA-to-SVGA TFT panels directly, eliminating an external display controller and shrinking the BOM. Typical designs place the i.MX21 between a 3.7 V Li-ion battery (via a 1.5 V LDO core supply) and a NAND flash storage array, using USB On-The-Go to drag-and-drop media files. The trade-off versus a discrete DSP-plus-microcontroller architecture is lower standby power but higher video-decoding peak consumption during full-motion playback.
Recommandé
Early-Generation Smartphones and PDAs
The MC9328MX21CJM was a foundation part for early-2000s smartphones and PDA devices running Windows CE 5.0 or Linux 2.6. The MMU-equipped ARM926EJ-S core provides full virtual-memory OS support, while integrated peripherals (USB Host, CMOS sensor interface, 1-Wire, synchronous serial) collapse what would otherwise be 4-5 discrete controllers onto a single chip. A typical reference design routes the CMOS sensor interface to a 1.3 MP camera module, USB Host to a keyboard/mouse dongle, and the LCD controller to a 2.5-inch QVGA TFT. Power consumption is governed by the Smart Speed frequency scaling block, which drops the core to low MHz during call standby.
Recommandé
Industrial Human-Machine Interface (HMI) Panels
The MC9328MX21CJM suits industrial HMI panels where its integrated TFT LCD controller up to SVGA drives 800x600 resistive-touch displays directly, and its on-chip MPEG-4 accelerator plays instructional/training video loops without external decoding silicon. Designers pair it with a 4-wire resistive touch controller over the synchronous serial interface and a 100 Mbps Ethernet MAC for plant-network connectivity. The 289-PBGA package is mechanically robust for fixed-installation industrial enclosures and supports extended temperature grades via the CJM variant's industrial operating range. Compared to a microcontroller-plus-discrete-LCD solution, the i.MX21 reduces component count from ~12 chips to 1, cutting board area by ~60 percent.
Recommandé
Automotive Infotainment Head Units and Telematics
The MC9328MX21CJM historically powered entry-level automotive infotainment and telematics head units requiring a small color LCD, USB media playback, and occasional camera input. The integrated CMOS sensor interface supports a reverse-gear backup camera, while USB On-The-Go reads media files from thumb drives. Designers must place a 1.5 V low-noise LDO near the PBGA power pins and route the SD/MMC interface signals on inner PCB layers to avoid EMI coupling into the AM/FM tuner. The NXP i.MX21 family was AEC-Q100 qualified for selected speed grades, making it suitable for non-safety automotive subsystems.
Recommandé
Point-of-Sale (POS) Terminals with Barcode/Camera
The MC9328MX21CJM is well-matched to compact POS terminals because the CMOS sensor interface accepts a barcode-scanner camera module and the USB Host port drives a receipt printer or external magnetic-stripe reader. The 266 MHz ARM926EJ-S core runs the customer's POS application stack under embedded Linux while the on-chip video accelerator handles any in-store promotional video playback. A complete reference design uses approximately 12-15 passive components plus the i.MX21 plus 32 MB SDRAM and 64 MB NAND; total BOM excluding enclosure is typically under $25 in volume. Industrial temperature grades are available in the same package for kitchen/kiosk installations.
Recommandé
Portable Industrial Data Loggers with Video Capture
The MC9328MX21CJM serves portable industrial data loggers that occasionally need to capture short MPEG-4 video clips alongside their primary data-acquisition function. The hardware H.263 encoder compresses video at CIF 30 fps with no CPU overhead, freeing the ARM core to log sensor data and run protocol stacks. A typical implementation pairs the i.MX21 with an external 12-bit ADC via the synchronous serial port and stores captured video to SD/MMC cards. The 289-PBGA package's 17x17 mm footprint allows the entire data-logger electronics to fit inside a handheld enclosure.
Recommandé
Embedded Linux Development Platforms and Evaluation Boards
The MC9328MX21CJM is widely used as the MPU on NXP-supported and third-party development boards for embedded Linux and Windows CE 6.0 evaluation. The 289-PBGA package is offered on standard 4-layer reference PCBs with full BSP availability from NXP and from community Linux distributions. Engineering teams evaluating real-time OS options can boot the same hardware into Linux, Windows CE, and several RTOS variants, accelerating bring-up. The NRND status means long-term production should migrate to i.MX28 or i.MX6 series for ongoing supply.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour MC9328MX21CJM — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | MC9328MX21DV | MC9328MX21DVL | MC9328MX21CJV |
|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 289-PBGA (17x17 mm) | 289-PBGA (17x17 mm) - same | 289-PBGA (17x17 mm) - same | 289-PBGA (17x17 mm) - same |
| Core | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S |
| Max Clock Frequency | 266 MHz | 266 MHz | 266 MHz | 266 MHz |
| Instruction Cache | 16 KB | 16 KB | 16 KB | 16 KB |
| Data Cache | 16 KB | 16 KB | 16 KB | 16 KB |
| Core Voltage | 1.5 V | 1.5 V | 1.5 V | 1.5 V |
| Video Accelerator | MPEG-4/H.263 CIF 30 fps | MPEG-4/H.263 CIF 30 fps | MPEG-4/H.263 CIF 30 fps | MPEG-4/H.263 CIF 30 fps |
| USB On-The-Go | Yes (two-host port) | Yes (two-host port) | Yes (two-host port) | Yes (two-host port) |
| Lifecycle Status | NRND | NRND | NRND | NRND |
Principaux différenciateurs
- Same-package drop-in compatibility with full i.MX21 family (vs MC9328MX21DV)
- Integrated MPEG-4/H.263 hardware video accelerator (vs MCIMX287CVM4B)
- Single-source status confirmed via Rochester Electronics long-term support (vs MC9328MX21DV)
Notes de conception
The 289-ball PBGA at 0.8 mm pitch demands at least a 4-layer PCB with dedicated power and ground planes. Use 0.5 oz copper on outer layers and 1 oz on inner layers. Escape-route the outer two rows of balls on the top layer via microvias (laser-drilled 0.1 mm holes); inner balls route through via-in-pad or staggered microvias. Maintain a continuous ground plane under the package for thermal spreading and reference return paths.
Estimated: the 266 MHz ARM926EJ-S core draws approximately 150-200 mA at 1.5 V under MPEG-4 decode load, plus 50-100 mA for peripheral logic at 1.8 V and 3.3 V. Use a low-noise 1.5 V LDO (such as NXP TLV1117 or equivalent) placed within 10 mm of the PBGA core-supply balls, with four 100 nF X7R 0402 capacitors distributed across the ball-grid pin pairs. Add 10 uF bulk tantalum or ceramic at the LDO output.
Estimated: at 266 MHz full-load, total package dissipation is approximately 0.5-0.8 W. The 289-PBGA 17x17 mm offers theta_JA of roughly 25-30 C/W on a 4-layer JEDEC test board, yielding ~12-25 C junction temperature rise above ambient. For sealed enclosures without airflow, derate by 30-40 percent or upgrade to the industrial-temperature DVL variant. The exposed die side of the PBGA does not require an external heatsink in most designs.
Informations de conformité
RoHS, REACH, lead-free, halogen-free, and conflict-minerals status not explicitly listed on the publicly available NXP product page or distributor pages as of 2026-10-17. Designers requiring formal compliance documentation for this NRND part should request the latest material declaration directly from NXP via the product page contact form.
