MC9328MX21SVK - i.MX21S ARM9 266MHz MPU, 289-LFBGA | NXP
N.º da peça: MC9328MX21SVK ✗ Fim de vida| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $28.81 | $28,81 |
| 10 | $25.93 | $259,30 |
| 100 | $22.47 | $2.247,00 |
| 500 | $19.01 | $9.505,00 |
| 1.000 | $16.39 | $16.390,00 |
MC9328MX21SVK Visão geral
An applications processor is a high-integration system-on-chip that combines a CPU, memory controllers, display and connectivity peripherals, and dedicated hardware accelerators on a single die. The i.MX21S sits inside the broader hierarchy of embedded multimedia processors (ARM9-class MPU) and is commonly used as the host CPU for human-machine interfaces, industrial HMI, and connected portable terminals where Linux or WinCE/WinMX software environments are deployed.
Key features include ARM926EJ-S 32-bit RISC core with MMU, on-chip LCD controller, USB On-The-Go controller, 1-Wire interface, CMOS sensor interface, and multiple synchronous serial interfaces (SSI/I2S/SPI). The 289-LFBGA package exposes a 32-bit external bus and SDRAM controller, plus integrated peripherals for system bring-up including timers, DMA, real-time clock, and interrupt controller. Per the NXP datasheet on nxp.com, the part is qualified for commercial temperature ranges and is supplied in tray packaging.
Typical applications include industrial human-machine interface panels, portable data terminals, point-of-sale terminals, medical patient monitoring displays, and low-cost web-pad style appliances. Designers pair the i.MX21S with external SDRAM and NAND/NOR flash, using its LCD controller to drive QVGA/VGA TFT panels and its USB OTG port to connect to peripherals or to a host PC. The 192 GPIO count and rich serial connectivity make it straightforward to add Ethernet PHYs, CAN transceivers, and audio codecs without an external companion MCU.
A key design consideration is that this part is a legacy i.MX21 family member and has been flagged End-of-Life by NXP; production designs should evaluate current i.MX RT or i.MX 6/7/8 successors. PCB layout for the 289-LFBGA demands 0.8 mm pitch fan-out, four-layer stack-up with continuous reference planes, and matched-length SDRAM traces to meet timing on the 16-bit external memory bus.
Alternativas drop-in para MC9328MX21SVK — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MC9328MX21SVK (mesmo formato e footprint) — diferindo em Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
MC9328MX21SCVM
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC9328MX21SVM
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9328MX21DVK
✅ Drop-In ⚠️ Especificações não verificadas✓ Em estoque
$20.62 / unidade
Ver ficha técnica →MCIMX27VOP4A
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MCIMX27VAM4A
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
MC9328MX21SVK Classificações máximas e características elétricas
| Manufacturer | NXP Semiconductors |
| Part Number | MC9328MX21SVK |
| Product Family | i.MX21 / i.MX21S |
| Core | ARM926EJ-S |
| Core Architecture | ARM9 32-bit RISC with MMU |
| Maximum CPU Clock | 266 MHz |
| Program Memory Type | ROMless (external boot) |
| Number of I/Os | 192 |
| Number of Pins / Balls | 289 |
| Encapsulamento | 289-LFBGA (14x14 mm, MAPBGA) |
| Package Code | LFBGA / MAPBGA |
| Supply Type | External memory bus (SDRAM/NOR/NAND) |
| On-chip Peripherals | LCD controller, USB OTG, 1-Wire, CMOS sensor IF, SSI/I2S/SPI |
| Operating Temperature Grade | Commercial |
| Terminal Form | Ball |
| Tipo de montagem | Surface Mount (BGA) |
| Packaging | Tray |
| Status do ciclo de vida | End of Life (per NXP product page) |
Guia de Configuração de Pinos do MC9328MX21SVK lfbga / mapbga
Configuração de pinos para MC9328MX21SVK (pacote lfbga / mapbga). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para MC9328MX21SVK.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MC9328MX21SVK é adequado para 6 aplicaçãos: Industrial Human-Machine Interface (HMI), Portable Data Terminal / Barcode Scanner, Point-of-Sale (POS) Terminal, Patient Monitoring Display, Webpad / Smart Appliance Terminal, Building Automation Controller.
Industrial Human-Machine Interface (HMI)
The MC9328MX21SVK's 266 MHz ARM926EJ-S core with MMU is well-matched to industrial HMI panels running embedded Linux or WinCE, where deterministic response to touch input and reliable multi-tasking are required. The integrated LCD controller directly drives QVGA/VGA TFT panels without an external graphics chip, reducing BOM cost. With 192 GPIO pins, the processor can interface keypad matrices, rotary encoders, LED indicators, and isolated I/O modules directly. Compared with discrete MCU + LCD-driver solutions, the i.MX21S offers single-chip system integration including USB OTG for field updates and 1-Wire for board identification. Designers should reserve SDRAM bandwidth for the GUI framebuffer and use the DMA engine for display refresh to keep CPU headroom for application logic.
Recomendado
Portable Data Terminal / Barcode Scanner
Handheld data terminals pair a barcode imager, Wi-Fi/Bluetooth module, keypad, and LCD, which the MC9328MX21SVK supports natively through its USB OTG host port, multiple SSI/I2S/SPI interfaces, and 192 GPIO. The ARM926EJ-S 266 MHz core runs the terminal application stack with enough headroom for cryptographic libraries (TLS, WPA) for wireless security. Power consumption is a concern in battery-powered terminals: designers should leverage the i.MX21's clock gating and frequency scaling to drop to lower CPU speeds during scan-and-transmit idle periods. The CMOS sensor interface can accept direct image data from a 2D imager module, eliminating an external ISP. Typical companion parts are SDRAM (32 MB), NOR flash (8 MB), and a power-management IC sourced separately.
Recomendado
Point-of-Sale (POS) Terminal
Countertop and mobile POS terminals need a Linux-capable processor with PCI-PTS-friendly security primitives, reliable USB connectivity, and a color LCD - all delivered by the MC9328MX21SVK. The ARM926EJ-S MMU enables address-space isolation between payment-card applications and merchant-facing software, a baseline requirement for PTS POI compliance. The USB OTG port serves peripheral connectivity to mag-stripe readers, EMV chip-card readers, and printers, while the integrated LCD controller drives the operator and customer-facing displays. Compared with discrete designs, the i.MX21S eliminates a companion MCU and reduces the bill of materials. Designers should harden the boot path with secure NOR flash programming and use the integrated crypto accelerators where present in the i.MX21 family.
Recomendado
Patient Monitoring Display
Bedside patient monitors require a reliable graphics-capable processor with deterministic display refresh and connectivity to multiple serial sensors - roles the MC9328MX21SVK fills via its LCD controller, multiple serial interfaces, and USB OTG. At 266 MHz the ARM926EJ-S can render trend graphs and waveforms while communicating with bedside sensor pods over SPI/I2C or via USB. The 289-LFBGA package keeps the footprint compact for portable-style monitors. With only 192 GPIO, expansion is reached through I/O expanders on the I2C bus. Designers should allocate DMA channels for waveform pixel streaming to avoid stutter on the LCD and budget SDRAM carefully because the i.MX21 has limited internal cache.
Recomendado
Webpad / Smart Appliance Terminal
The original i.MX21S target use case, webpads and smart appliances need an LCD, touch/USB input, Ethernet or Wi-Fi, and modest CPU performance - all directly supported by the MC9328MX21SVK. At 266 MHz the ARM926EJ-S runs a lightweight browser stack and appliance UI fluidly, while USB OTG connects to peripherals and the LCD controller drives the panel. The ROMless design lets appliance makers secure-boot from signed NOR flash for tamper resistance. Power design should budget for a 1.2-1.8V core and 3.3V I/O; the i.MX21S integrates its own internal regulators on some variants but external PMU is typical. Reference Linux BSPs from NXP accelerate bring-up.
Recomendado
Building Automation Controller
Building automation gateways aggregate BACnet, Modbus, and KNX fieldbus traffic, present a web UI, and log events - tasks well-suited to the MC9328MX21SVK's ARM9 core running embedded Linux. The 192 GPIO count and rich serial peripheral set let a single i.MX21S serve as a multi-protocol concentrator with on-board LCD for local status. The processor's low standby power consumption is advantageous for always-on installations. Compared with 8-bit microcontrollers, the i.MX21S supports encrypted communications and a true multi-tasking stack without an external RTOS coprocessor. Design focus should include surge protection on external terminals and a robust watchdog timer strategy given unattended deployment.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC9328MX21SVK — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC9328MX21SCVM | MC9328MX21SVM | MC9328MX21DVK | MCIMX27VOP4A | MCIMX27VAM4A |
|---|---|---|---|---|---|---|
| Package | 289-LFBGA (14x14 mm) | 289-MAPBGA - same footprint | 289-MAPBGA - same footprint | 289-MAPBGA - same footprint | 289-MAPBGA - same footprint (i.MX27 family) | 289-MAPBGA - same footprint (i.MX27 family) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S | ARM926EJ-S |
| Maximum CPU Clock | 266 MHz | 266 MHz | 266 MHz | 266 MHz | 400 MHz | 400 MHz |
| Program Memory Type | ROMless | ROMless | ROMless | ROMless | ROMless | ROMless |
| Temperature Grade | Commercial | Industrial (-40C to +85C) | Commercial | Commercial | Commercial/Industrial | Commercial/Industrial |
| Lifecycle Status | EOL | EOL | EOL | EOL | EOL | EOL |
Principais diferenciais
- Cost-reduced derivative with all major i.MX21 connectivity (vs Standard MC9328MX21 (full multimedia))
- Identical pin map to other i.MX21 SVK/CVM order codes (vs MC9328MX21SCVM)
- Same 0.8 mm-pitch 289-ball footprint as i.MX27 family (vs MCIMX27VOP4A (i.MX27))
Notas de projeto
The 289-LFBGA at 14x14 mm with 0.8 mm ball pitch requires a 4-layer PCB minimum, with continuous GND and PWR planes under the BGA to provide reference for the SDRAM bus escape routes. Use microvia-in-pad if the stack-up permits, otherwise dogbone fan-out to inner signal layers, with matched trace lengths on the SDRAM byte lanes (within +/-25 mil) for proper DDR-style or SDR-style timing margin. Maintain at least 0.5 mm clearance between the BGA escape traces and any analog signal traces (audio, USB DP/DM) to avoid coupling. Decouple each VDD rail with 0.1 uF X7R placed within 1 mm of the corresponding ball, plus a bulk 10 uF tantalum per rail.
The MC9328MX21SVK requires multiple supply rails: core (typically 1.2-1.5 V dependent on speed grade), I/O (3.3 V), and PLL/analog (1.8-2.5 V filtered with ferrite beads to reduce jitter). Power sequencing is mandatory per the datasheet - core must reach 0.6 V before I/O rises to 3.3 V, otherwise internal ESD structures may latch. Use a sequencer IC or a power-management IC such as those in the PF0100 family. Decoupling capacitance budget is approximately 30 uF of ceramic per core rail plus bulk 22 uF tantalum, distributed around the BGA footprint.
The i.MX21 boot mode is selected by four sampled pins (BOOT[3:0]) during reset; incorrect strapping values leave the device in serial-loader mode and the engineer mistakenly believes the part is dead. Another common pitfall is leaving JTAG TCK floating - this can randomly clock the TAP controller and prevent proper debug attach; always pull TCK low through 10 kOhm when not in use. Finally, the SDRAM controller requires careful length matching on the data byte lanes (DQ, DQS, DM); mismatched DQS-DQ skew above 0.25 UI will produce data corruption at 100 MHz + SDRAM clock speeds.
The 289-LFBGA has a typical theta-JA of around 25-35 C/W on a 4-layer JEDEC test board with adequate via stitching under the thermal pad/balls. The i.MX21S at 266 MHz full-load may dissipate approximately 0.5-0.8 W; combined with industrial-temperature environments and enclosure constraints, a thermally conductive PCB cutout or thermal pad landed on inner copper may be required to keep Tj below the 100C junction limit during continuous operation. Estimated: power dissipation 0.7 W, theta-JA 30 C/W, junction rise approximately 21 C above ambient - acceptable for commercial temperature designs but borderline for sealed industrial enclosures.
Informações de conformidade
Per the NXP product page the part is RoHS and lead-free compliant. AEC-Q100 not applicable to this commercial-grade applications processor. Halogen-free status not explicitly stated in retrieved web data - marked [DATA_NEEDED].
