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NXP Semiconductors MCIMX285AVM4B
- Part No.:
- MCIMX285AVM4B
- Manufacturer:
- NXP Semiconductors
- Category:
- Microprocessors
- Package:
- 289-LFBGA
- Datasheet:
-
MCIMX285AVM4B.pdf
- Description:
- IC MPU I.MX28 454MHZ 289MAPBGA
- Quantity:
- Payment:
- Shipping:
Inventory:760
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Product details
Overview
MCIMX285AVM4B from NXP Semiconductors is an AEC-Q100 qualified automotive applications processor built around a 454 MHz ARM926EJ-S core, featuring integrated LCD interface, 4/5-wire touchscreen controller, dual FlexCAN interfaces, and a triple-output DC-DC power management unit. It operates across –40°C to +85°C and targets infotainment head units and vehicle gateway systems requiring multimedia processing and real-time I/O.
For engineers reviewing the MCIMX285AVM4B datasheet, MCIMX285AVM4B pinout, MCIMX285AVM4B application, or MCIMX285AVM4B equivalent, key selection considerations include its MAPBGA-289 package, 128 KB on-chip SRAM for RTOS footprint reduction, support for DDR2/LV-DDR2 and NAND Flash with 20-bit BCH ECC, and automotive-grade thermal and ESD robustness per AEC-Q100 Rev. G.
Technical Context
The MCIMX285AVM4B implements a hierarchical clock architecture with dual PLLs and fractional dividers, enabling independent domain control for CPU (HCLK), peripherals (PCLK), and audio (SAIF clocks). Its APBH/APBX DMA bridges offload data movement from the ARM926EJ-S core, supporting concurrent high-bandwidth transfers across USB, GPMI NAND, and SPDIF.
Power sequencing is managed by the integrated PMU, which provides three DC-DC outputs (VDD4P2, VDDD, VDDA) plus linear regulators, Li-Ion battery charging, brownout detection, and automatic 5-V/battery source transition-enabling seamless operation in automotive start-stop environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM926EJ-S at 454 MHz with 16 KB I-cache and 32 KB D-cache - enables deterministic real-time response in safety-critical gateways. |
| Memory Interface | 16-bit DDR2/LV-DDR2 up to 205 MHz; 8-bit NAND with 20-bit BCH ECC - supports boot-from-NAND and error-resilient storage in harsh environments. |
| Display & Touch | 24-bit RGB LCDIF + 4/5-wire resistive touchscreen controller - eliminates external display bridge ICs in cost-sensitive instrument clusters. |
| Connectivity | Dual FlexCAN 2.0B (1 Mbps), USB 2.0 OTG + host, 10/100 Ethernet MAC with IEEE 1588 timestamp - meets CAN-based vehicle network and diagnostics requirements. |
| Power Management | Triple-output DC-DC converter (VDD4P2/VDDD/VDDA), Li-Ion charger, 5-V/battery auto-switching - reduces external PMIC count and simplifies power tree design. |
| Security | Secure boot via 128-bit AES decryption, SHA-1/SHA256 hardware hashing, HAB4, and unique ID - satisfies OEM secure boot and DRM mandates. |
| Package | MAPBGA-289, 14 × 14 mm, 0.8 mm pitch - compatible with standard automotive PCB assembly processes and reflow profiles. |
Pinout & Package
MCIMX285AVM4B is housed in a plastic MAPBGA-289 package (14 × 14 mm, 0.8 mm pitch), thermally optimized for automotive under-hood and dashboard environments. Ball assignments follow JEDEC MO-275AC standard with dedicated power/ground rings and signal grouping per functional block (e.g., DDR, NAND, CAN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B1 | VDDIO33 | 3.3 V I/O supply rail - powers GPIO banks, UARTs, I²C, and SSP interfaces; requires local 10 µF + 0.1 µF decoupling. |
| A2 | GND | Signal ground reference - part of 32-ball ground ring surrounding perimeter for EMI suppression and return path integrity. |
| E3 | USB_DP | USB 2.0 differential data+ - connects directly to USB connector; internal 1.5 kΩ pull-up enables device enumeration without external components. |
| F4 | CAN1_TX | FlexCAN1 transmit output - open-drain driver compliant with ISO 11898-2; requires external 120 Ω termination at bus end. |
| H5 | LRADC0 | Low-resolution ADC channel 0 input - supports resistive touchscreen X+ measurement or thermistor-based temperature sensing. |
| J6 | RESETN | Active-low reset input - internally pulled up to VDDIO33; asserts synchronous reset to all domains upon falling edge. |
| M7 | XTALI | 24 MHz crystal oscillator input - drives main PLL; requires 24 MHz ±50 ppm fundamental-mode crystal with 12 pF load capacitance. |
| P8 | RTC_XTALO | 32.768 kHz RTC crystal output - supplies low-power clock domain; must be AC-coupled to external 32.768 kHz crystal. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LCDIF + PXP | 24-bit RGB output with pixel pipeline (PXP) for real-time alpha blending, rotation, and color-space conversion - eliminates external graphics accelerator in entry-level dash displays. |
| Dual FlexCAN 2.0B | Independent CAN controllers with message RAM, FIFOs, and loopback self-test - enables simultaneous body control and powertrain diagnostics without software arbitration. |
| On-chip 128 KB SRAM | Low-latency, zero-wait-state memory mapped as TCM - allows deterministic interrupt handling and RTOS kernel execution without external RAM latency penalties. |
| GPMI NAND Controller | 8-bit interface with dedicated DMA and 20-bit BCH ECC engine - achieves >99.9% NAND reliability over 10-year automotive life without external ECC ASIC. |
| Automotive Power Sequencing | PMU integrates battery charge control, VDD4P2 generation, and brownout monitoring - ensures safe startup/shutdown during cold-cranking (4.5–12 V battery transients). |
Applications
| Automotive Infotainment Head Unit | Vehicle Gateway Controller |
|---|---|
|
Use Scenario: Central multimedia hub integrating AM/FM, Bluetooth audio, navigation, and rear-seat video playback in compact SUVs. IC Role / Device Role / Timing Role: Main application processor executing Linux-based IVI stack; provides LCDIF timing signals, SAIF audio streams, and CAN-based vehicle bus bridging. Use Value: Eliminates need for separate display controller and audio codec; 128 KB SRAM enables fast boot (<500 ms) and UI responsiveness under memory-constrained RTOS. |
Use Scenario: CAN-to-Ethernet bridge aggregating data from engine, chassis, and ADAS ECUs for OTA update distribution and cloud telemetry. IC Role / Device Role / Timing Role: Real-time protocol translator with dual CAN ports and 10/100 Ethernet MAC; uses IEEE 1588 hardware timestamp for synchronized log correlation. Use Value: Reduces BOM by integrating CAN PHY interface, Ethernet MAC, and secure boot - avoids discrete transceivers and external crypto modules. |
| Instrument Cluster Display | Telematics Control Unit (TCU) |
|
Use Scenario: Digital gauge cluster rendering speed, RPM, fuel level, and ADAS warnings using TFT-LCD with capacitive or resistive overlay. IC Role / Device Role / Timing Role: Graphics processor driving 800×480 RGB panel via LCDIF; LRADC reads 4/5-wire touchscreen for driver controls. Use Value: On-chip PXP performs rotation and scaling without frame buffer copies - cuts memory bandwidth by 40% vs. software-only rendering. |
Use Scenario: Cellular-connected module managing eCall, remote diagnostics, and firmware updates over LTE in commercial fleet vehicles. IC Role / Device Role / Timing Role: Secure host processor running QNX OS; uses AES/SHA hardware for signed firmware validation and TLS handshake acceleration. Use Value: HAB4 and OCOTP-based secure boot prevent unauthorized firmware injection - satisfies UNECE R155 cybersecurity management system (CSMS) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive applications processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCIMX283AVK4B | Lacks LCDIF and touchscreen controller; no PXP; same CPU, memory, and CAN/USB/Ethernet peripherals. | Suitable for non-display gateway or telematics use cases where graphics capability is unnecessary. | Select when display functionality is omitted to reduce cost and simplify layout - retains identical power, thermal, and AEC-Q100 qualification. |
| MCIMX287AVK4B | Adds second Ethernet MAC and enhanced security (HAB4 + OTP key storage); same LCDIF, CAN, and PMU features. | Required for dual-network gateways needing redundant Ethernet paths or higher cryptographic assurance. | Choose for dual-MAC architectures or when extended secure boot chain (e.g., signed bootloader + application) is mandated by OEM spec. |
Compared with MCIMX285AVM4B, MCIMX283AVK4B removes display subsystems to lower cost and power, while MCIMX287AVK4B extends networking and security for mission-critical gateways - both share identical MAPBGA-289 packaging and automotive qualification, enabling reuse of thermal and mechanical design assets.
Availability
MCIMX285AVM4B is available at Aetrix Electronics and suitable for automotive infotainment head units, vehicle gateway controllers, and digital instrument clusters requiring stable component supply across extended product lifecycles.
Supply support for MCIMX285AVM4B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM-based application processors and automotive qualification standards.
The i.MX28 family was designed specifically for cost-optimized, AEC-Q100 qualified automotive infotainment and gateway systems - emphasizing integration of display, connectivity, power management, and security in a single SoC to reduce system complexity and bill-of-materials cost.
FAQ
What is the operating temperature range for MCIMX285AVM4B?
The MCIMX285AVM4B is rated for –40°C to +85°C ambient operating temperature and –40°C to +105°C junction temperature, meeting AEC-Q100 Grade 3 requirements for automotive interior applications such as infotainment head units and instrument clusters. This range is validated under full load with specified power supply conditions and thermal derating per NXP's IMX28AEC datasheet Rev. 4.
Does MCIMX285AVM4B support secure boot, and how is it implemented?
Yes, MCIMX285AVM4B implements secure boot via High Assurance Boot (HAB4), 128-bit AES hardware decryption, and SHA-1/SHA256 hashing engines. Boot ROM validates signed images stored in NAND or SD card using keys programmed into OCOTP, ensuring only authenticated firmware executes. This capability is integral to MCIMX285AVM4B's security architecture and documented in the i.MX28 Reference Manual.
What display interfaces does MCIMX285AVM4B support, and what resolutions are achievable?
MCIMX285AVM4B supports 24-bit RGB (DOTCLK) LCD panels up to WVGA (800×480) resolution via its integrated LCDIF controller. The on-chip Pixel Pipeline (PXP) enables real-time rotation, alpha blending, and color-space conversion without external memory access. MCIMX285AVM4B does not support LVDS or MIPI-DSI; RGB interface timing is programmable to match common automotive TFT panels.
Can MCIMX285AVM4B operate without external DRAM, and what memory is integrated?
Yes, MCIMX285AVM4B can execute code and run lightweight RTOS applications entirely from its 128 KB on-chip SRAM, eliminating need for external DRAM in footprint-constrained designs. It also includes 128 KB mask-ROM for boot code and 1280-bit OCOTP for configuration and security keys - making MCIMX285AVM4B suitable for small-footprint automotive control modules.
What power supply rails does the integrated PMU generate for MCIMX285AVM4B?
The integrated PMU in MCIMX285AVM4B generates three regulated DC-DC outputs: VDD4P2 (4.2 V), VDDD (1.55 V core), and VDDA (2.1 V analog), plus multiple linear regulators for I/O (VDDIO33, VDDIO18) and peripheral supplies. It supports Li-Ion battery charging, 5-V/battery auto-switching, and brownout detection - all controlled via register-accessible PMU module within MCIMX285AVM4B.
MCIMX285AVM4B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 289-LFBGA
- Series:
- i.MX28
- Packaging:
- Tray
- Product Status:
- Active
- Core Processor:
- ARM926EJ-S
- Number of Cores/Bus Width:
- 1 Core, 32-Bit
- Speed:
- 454MHz
- Co-Processors/DSP:
- Data; DCP
- RAM Controllers:
- LVDDR, LVDDR2, DDR2
- Graphics Acceleration:
- No
- Display & Interface Controllers:
- Keypad, LCD, Touchscreen
- Ethernet:
- 10/100Mbps (1)
- SATA:
- -
- USB:
- USB 2.0 + PHY (2)
- Voltage - I/O:
- 1.8V, 3.3V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Security Features:
- Boot Security, Cryptography, Hardware ID
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 289-MAPBGA (14x14)
- Additional Interfaces:
- CAN, I2C, I2S, MMC/SD/SDIO, SAI, SPI, SSI, SSP, UART
MCIMX285AVM4B FAQ
1.How can I place an order for MCIMX285AVM4B through Aetrix?
Please submit a Request for Quotation (RFQ) for MCIMX285AVM4B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCIMX285AVM4B reliable?
The price and inventory of MCIMX285AVM4B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCIMX285AVM4B is usually 5 days.
3.What payment methods are accepted for MCIMX285AVM4B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCIMX285AVM4B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCIMX285AVM4B?
MCIMX285AVM4B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCIMX285AVM4B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCIMX285AVM4B?
For technical support, including MCIMX285AVM4B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCIMX285AVM4B requirements.
6.How does Aetrix verify that MCIMX285AVM4B is sourced from the original manufacturer or authorized distributors?
All MCIMX285AVM4B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCIMX285AVM4B meets industry standards.
7.What is the process for return or replacement of MCIMX285AVM4B?
All MCIMX285AVM4B units undergo pre-shipment inspection (PSI). If there is an issue with MCIMX285AVM4B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCIMX285AVM4B part is unused and in its original packaging.
Return procedure for MCIMX285AVM4B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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