MC9328MX21CVM - i.MX21 ARM926EJ-S MPU 266MHz | NXP
MPN: MC9328MX21CVM ✗ Cuối đờiMC9328MX21CVM Tóm tắt
An applications processor is a system-on-chip (SoC) category tailored for multimedia and human-machine interface (HMI) workloads. Within NXP's i.MX family, the i.MX21 sits in the Smart Speed generation that pairs a power-efficient ARM926EJ-S core with dedicated video, USB, and display peripherals, occupying the middle of the i.MX2 lineage between the i.MX1 and the later i.MX27. It functions as a complete media extension (MX) subsystem in the broader ARM926EJ-S microprocessor hierarchy.
Key features include the Smart Speed Switch power-management fabric, dual USB host ports (OTG), on-chip MPEG-4 and H.263 codec acceleration targeting handheld video, a 16/18-bit LCD controller capable of driving SVGA panels, and a 1-Wire interface alongside a synchronous serial block. The processor presents up to 192 general-purpose I/Os and targets portable, battery-powered designs.
The architecture pairs an ARM926EJ-S core with an MMU and separate I/D caches, AMBA bus fabric, and a video accelerator pipeline. The Smart Speed Switch allows individual peripheral clocks to be gated at runtime, and the integrated codec engine offloads MPEG-4/H.263 from the host CPU, leaving the ARM core free for application and OS tasks.
Typical applications include portable media players, PDAs and smart handhelds, video-capable two-way radios, web pads, and industrial HMI panels. Wide operating voltage support from approximately 1.7V core to 3.3V I/O also makes it useful in 24V-tolerant industrial front-ends with proper regulation.
When designing with the MC9328MX21CVM, careful PCB layout of the 289-ball MAPBGA is essential: matched-length DDR traces, solid ground-reference power planes, and proper decoupling (typically 100 nF ceramic per power pin) are required to meet USB and LCD timing margins.
This page synthesizes distributor pricing for the MC9328MX21CVM, drop-in package-compatible i.MX family alternatives, and practical design notes not consolidated in the original NXP data sheet.
Bộ thay thế dễ dàng lắp đặt cho MC9328MX21CVM — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MC9328MX21CVM (cùng hình factor và footprint) — khác nhau ở Core Architecture, Package, USB Interface, Video Acceleration, LCD Controller.
MC9328MX21CVM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9328MX21VM
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MC9328MX21CVM Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM926EJ-S |
| Core Count | 1 |
| Bề rộng đường dữ liệu | 32-bit |
| Tần số xung maksimum | 266 MHz |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| Number of I/O | 192 |
| Hộp / Vỏ | 289-LFBGA / MAPBGA |
| Package Dimensions | 17 mm x 17 mm |
| Điện áp cung cấp hoạt động | 1.7 V to 3.3 V |
| Program Memory Type | ROMless |
| Oscillator Type | External |
| LCD Controller | 16/18-bit color, up to SVGA |
| USB Interface | USB On-The-Go with 2 host ports |
| Video Acceleration | MPEG-4 / H.263 encode-decode up to CIF 30 fps |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tray |
Hướng dẫn cấu hình chân MC9328MX21CVM 17 mm x 17 mm
Cấu hình chân cho MC9328MX21CVM (17 mm x 17 mm gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho MC9328MX21CVM.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
MC9328MX21CVM phù hợp cho 6 Áp dụngs: Portable Media Players, Industrial HMI Panels, Smart Handheld Terminals, Video-Capable Two-Way Radios, Web Pads and Tablet Devices, Portable Medical Devices.
Portable Media Players
The MC9328MX21CVM's 266 MHz ARM926EJ-S core combined with on-chip MPEG-4/H.263 hardware encode-decode acceleration makes it well matched to portable media players decoding CIF video at 30 fps. Compared to software-only decoders, the dedicated codec engine frees the ARM926EJ-S core for audio processing and UI rendering while keeping power within a battery-budget envelope. The 16/18-bit LCD controller simultaneously drives SVGA displays, allowing direct connection to common portable panels without an external bridge. The Smart Speed Switch clocks gates unused peripherals during audio playback, extending battery life. Engineers targeting 30 fps video on a 3.5-inch QVGA panel should pair this processor with a low-power DDR memory and a dedicated audio DAC.
Được đề xuất
Industrial HMI Panels
The MC9328MX21CVM offers 192 general-purpose I/Os and a 16/18-bit SVGA-capable LCD controller that makes it appropriate for industrial HMI panels requiring touchscreen-driven controls. The 266 MHz ARM926EJ-S core executes control-loop logic and graphical user-interface tasks simultaneously, while the integrated USB On-The-Go interface enables field-service firmware updates via USB stick. Operating voltage spans 1.7V core to 3.3V I/O, which simplifies integration with 3.3V-tolerant industrial sensors and actuators. HMI designers should add a dedicated touch controller (such as a 4-wire resistive TSC) on the SPI bus and isolate noisy drive electronics from the 289-MAPBGA with proper ground plane partitioning.
Được đề xuất
Smart Handheld Terminals
The MC9328MX21CVM is appropriate for smart handheld terminals that combine barcode scanning, wireless connectivity, and an integrated display. The processor's USB On-The-Go dual-host capability accommodates simultaneous attachment of barcode scanner and external storage. The 1-Wire interface supports Dallas-style ID devices and temperature sensors, commonly used in handheld logistics terminals. The 289-MAPBGA 17x17 footprint keeps board area compact for pocket-sized form factors. Engineers should validate thermal performance - at 266 MHz the core dissipates several hundred milliwatts, requiring thermal vias and adequate PCB copper to maintain junction temperature within limits.
Được đề xuất
Video-Capable Two-Way Radios
The MC9328MX21CVM's integrated MPEG-4/H.263 hardware codec accelerates video encoding for push-to-talk two-way radios that transmit compressed video alongside voice. The 266 MHz ARM926EJ-S core manages real-time networking stacks, while the dedicated codec engine handles H.263 video at CIF 30 fps, ensuring low latency for live transmission. The 16/18-bit LCD controller drives viewfinder displays, while the CMOS sensor interface connects directly to compact camera modules. Designers should pair this processor with a low-power RF transceiver and a battery management IC, and allocate separate power islands for RF and digital blocks to minimize switching-noise interference.
Được đề xuất
Web Pads and Tablet Devices
The MC9328MX21CVM provides enough processing throughput for early-generation web pads and tablet devices browsing content over Wi-Fi or wired Ethernet. The 266 MHz ARM926EJ-S core runs a lightweight browser stack while the LCD controller drives larger SVGA panels. USB On-The-Go allows attachment of external keyboards or storage devices. The 289-MAPBGA package keeps the main board very compact. Engineers building web-pad form factors should pair the processor with external Wi-Fi silicon, a touchscreen controller, and at least 32 MB of external SDRAM to support reasonable browser rendering performance.
Được đề xuất
Portable Medical Devices
The MC9328MX21CVM is suitable for portable medical monitoring devices that require a small LCD and efficient data display. The 266 MHz ARM926EJ-S core processes patient data while the integrated LCD controller drives a 16/18-bit color display for waveform readouts. The low-power Smart Speed Switch architecture extends battery runtime during continuous-monitoring scenarios, which is critical for portable medical hardware. The 192 GPIOs allow direct sensor interface without external I/O expanders. Designers must implement a regulated, battery-friendly power tree and verify that the processor's 1.7V core / 3.3V I/O rails are properly decoupled per the NXP design checklist.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MC9328MX21CVM — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MC9328MX21CVM | MC9328MX21VM |
|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 289-MAPBGA 17x17 | 289-MAPBGA 17x17 | 289-MAPBGA |
| Core Architecture | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S |
| Maximum Clock Frequency | 266 MHz | 266 MHz | 266 MHz |
| Data Bus Width | 32-bit | 32-bit | 32-bit |
| Instruction Cache | 16 KB | 16 KB | 16 KB |
| Data Cache | 16 KB | 16 KB | 16 KB |
| USB Interface | USB OTG, 2 host ports | USB OTG, 2 host ports | USB OTG, 2 host ports |
| Lifecycle Status | NRND / End of Life | NRND | NRND |
Bảo phân biệt quan trọng
- Integrated hardware video codec at 266 MHz (vsMCIMX27 family upgrades)
- USB On-The-Go with dual host ports (vsOlder i.MX1 single-host parts)
- Smart Speed Switch power gating (vsGeneric ARM9 application processors)
Ghi chú thiết kế
The MC9328MX21CVM uses a 289-ball MAPBGA at 17x17 mm with 0.8 mm pitch (typical for the i.MX21 family). Engineers should follow NXP's reference layout guidelines: 4-layer minimum stack-up with continuous ground reference beneath the BGA, microvia-in-pad recommended for inner rows to escape signals, and matched-length impedance control (50 ohm single-ended, 100 ohm differential) for DDR memory interface traces. Decoupling: place one 100 nF ceramic X7R per power pin adjacent to the ball, plus bulk 4.7 uF to 22 uF tantalum or polymer caps at each voltage regulator output.
At 266 MHz operation the MC9328MX21CVM core dissipates several hundred milliwatts. The 289-MAPBGA relies on PCB copper for heat spreading; thermal vias under the die area (typically 4x4 grid of 0.3 mm vias) are required to conduct heat into inner ground planes. Estimated: at full core activity with 1.8V core supply, junction-to-ambient thermal resistance is approximately 30-40 C/W on a 4-layer board, requiring at least 10 cm square of ground copper to maintain safe operating temperature below 85 C ambient.
The MC9328MX21CVM requires multiple supply rails: typically 1.7-1.95V core, 2.5V or 3.3V I/O, 1.8V PLL, and a separate 3.0-3.3V USB transceiver supply. Each rail should be derived from a dedicated LDO or DC-DC converter with proper sequencing (core before I/O recommended). USB OTG transceiver power must be isolated to prevent digital switching noise injection into the analog USB PLL. Place ferrite beads on the USB supply if the same regulator powers other analog blocks.
Common pitfalls when designing with the MC9328MX21CVM include: (1) forgetting the external oscillator source - the integrated core requires a precise 26 MHz reference for proper USB and clocking; (2) underestimating boot mode strapping - boot configuration pins must be pulled to the correct state at reset or the processor fails to start; (3) not enabling JTAG/ETM access for debug - leaving TEST/NRESET/BOOTMODE pins unconnected causes difficult-to-diagnose startup failures. Always consult the i.MX21 Reference Manual boot chapter before finalizing the schematic.
Thông tin tuân thủ
RoHS status was not provided in the verified web data; defaulting to 'unknown'. The MC9328MX21CVM is an End-of-Life consumer/industrial part - AEC-Q100 automotive qualification is not applicable.
