Eyeq4 Datasheet //top\\ Site
Mobileye EyeQ4 is an automotive-grade vision processor (SoC) designed by Mobileye and manufactured by STMicroelectronics using 28nm FD-SOI technology. It represents a massive leap in processing power for Advanced Driver Assistance Systems (ADAS) compared to its predecessors. Core Specifications Architecture
: High-performance multi-core design including 4 multi-threaded MIPS InterAptiv CPU cores, 6 Vector Microcode Processors (VMP), 2 Multithreaded Processing Clusters (MPC), and 2 Programmable Macro Arrays (PMA). Performance : Delivers 2.5 Teraflops (TOPS)
of processing power, which is roughly 10x the capability of the EyeQ3. Efficiency : Consumes approximately
, making it highly energy-efficient relative to its output (only 20% more power than the EyeQ3 for 10x the power). Vision Input : Supports visual input from up to simultaneously at 30fps. Key Capabilities Advanced Detection
: Includes vehicle detection from any angle, next-generation lane detection, and traffic light detection. Environmental Modeling
: Capable of full environmental modeling and holistic path planning. : Supports Mobileye's Road Experience Management (REM) for crowd-sourced high-definition mapping. Safety Features eyeq4 datasheet
: Powers Automated Emergency Braking (AEB), Forward Collision Warning (FCW), and Adaptive Cruise Control (ACC). Review: The "Sweet Spot" for Semi-Autonomous Driving
The EyeQ4 is widely considered the processor that moved ADAS from simple "passive" alerts to "active" semi-autonomous driving. Unmatched Efficiency
: At just 3W, it delivers heavy-duty processing without requiring complex cooling systems, a critical factor for automotive reliability. Massive Scalability
: It was designed to support everything from basic mono-camera systems to complex "Tri-cam" setups found in luxury brands like BMW. Proven Reliability
: Already integrated into over 160 car models from major OEMs like GM, Nissan, and Honda. Generationally Older : While powerful, it has since been surpassed by the EyeQ Ultra Mobileye EyeQ4 is an automotive-grade vision processor (SoC)
, which offer significantly higher TOPS for Level 4/5 autonomy. Closed System
: Historically, Mobileye chips have been more "black box" systems, though later generations (like EyeQ5) began moving toward more open software platforms. performance against the newer
5. Supported Autonomous Driving Functions (Examples)
- Traffic Jam Assist (TJA)
- Highway Assist (HA)
- Auto Lane Change (ALC)
- Traffic sign & light recognition
- Free space detection (parking)
- Road profile / pothole detection
- REM™ (Road Experience Management) mapping support
Automotive Peripherals (Listed in I/O Table)
- 16x CAN-FD controllers
- 8x LIN interfaces
- 2x Gigabit Ethernet MAC (RGMII) – used for surround-view and raw data logging
- SPI, I2C, UART (multiple instances)
- GPIO: 64 pins with interrupt capability
- PWM for LED drivers (exterior light control)
9. Application Notes
- Power sequencing: Requires core before I/O (refer to PMIC design guide)
- Thermal design: Heatsink or active cooling required for sustained max performance
- EMC precautions: Separate analog/digital ground planes on PCB
- Boot: Boot from SPI flash or eMMC (multistage bootloader)
Software and Toolchain (Referenced in Datasheet Footnotes)
The EyeQ4 is not programmable via standard C compilers for the vision accelerators. Instead, Mobileye provides the EyeQ Software Development Kit (SDK) which includes:
- EyeQ Compiler – Maps neural network graphs (from TensorFlow, PyTorch, or Caffe) to the VMPs.
- RTL simulation models – For hardware-in-the-loop (HIL) testing.
- Safety library – Pre-certified functions (ASIL B) for lane keeping and AEB.
Note: The datasheet explicitly states that third-party CUDA or OpenCL code is not supported.
Design Considerations for Engineers
If you are downloading the EYEQ4 datasheet for a new project, keep these practical engineering factors in mind: Traffic Jam Assist (TJA) Highway Assist (HA) Auto
Thermal and Mechanical Data
The EyeQ4 is offered in a FCBGA-484 package.
| Parameter | Value |
|-----------|-------|
| Package Dimensions | 17 mm × 17 mm |
| Ball pitch | 0.8 mm |
| Ball count | 484 |
| Junction-to-case thermal resistance (θjc) | 2.5 °C/W |
| Maximum junction temperature (Tj) | 105°C (150°C for short transients) |
Thermal design note: The datasheet recommends a 4-layer PCB with at least 6 thermal vias under the exposed die pad for conduction to chassis ground.
Page 4-6: Camera Input Specifications
The datasheet details the Mobileye EyeQ4’s Image Signal Processor (ISP). It supports up to 8x MIPI CSI-2 lanes. Critical specs include:
- Support for 1.7 MP (megapixel) and 8 MP sensors.
- Dynamic range correction (HDR) up to 120 dB.
- On-chip lens distortion correction.
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