In modern video surveillance and drone video transmission systems, the precise overlay of real-time data onto video footage has become an essential requirement. Whether security cameras need to display timestamps and location information, or FPV drone pilots need to access key data such as flight altitude, GPS coordinates, and battery voltage, these applications all rely on a high-performance, highly integrated OSD (On-Screen Display) video character overlay chip.
As a professional supplier of electronic components, Mingjiada Electronics (Shenzhen) Co., Ltd. has long supplied the AT7456E monochrome on-screen display generator in large quantities. This chip is fully compatible with the MAX7456. Thanks to its high integration, wide operating temperature range, and flexible character programming capabilities, it has become the ideal choice for applications such as drone video transmission, security surveillance cameras, industrial endoscopes, and in-vehicle imaging systems.
Product Overview: Highly Integrated Single-Channel OSD Solution
The AT7456E is a single-channel, monochrome on-screen display generator with integrated EEPROM, developed by Hangzhou Zhongke Microelectronics. It integrates a video driver, sync separator, video isolation switch, and EEPROM memory within a single chip, significantly simplifying peripheral circuit design and effectively reducing overall system costs.
The chip supports the globally recognized NTSC and PAL video standards and features 512 user-programmable characters with a dot matrix size of 12×18 pixels. Users can not only utilize the factory-preset character library but also program and update characters and graphics online via an SPI-compatible serial interface, flexibly meeting the customization needs of different products.
Key Advantages and Features
Highly Integrated, Simplified Design: Integrates video drive, sync separation, and EEPROM into a single chip, reducing the number of peripheral components and improving system stability and immunity to interference.
Rich Display Functions: Supports character flashing, color inversion, background control, and per-line brightness adjustment, ensuring that display information remains clearly legible in both bright and dim lighting conditions. Supports up to 16 rows × 30 columns of character display, meeting the needs of interfaces with large amounts of information.
Wide Operating Temperature Range: With an operating temperature range of -40°C to +85°C, it is capable of withstanding harsh environments such as outdoor surveillance, automotive, and industrial applications.
Flexible Video Synchronization: Features a built-in synchronization generator while also supporting external composite synchronization signals (LOS/VSYNC/HSYNC), offering exceptional compatibility.
Pin-to-Pin Compatibility: Hardware-compatible with the market-leading MAX7456, facilitating solution replacement and upgrades for customers while reducing replacement costs and development risks.
Typical Application Scenarios
Thanks to its excellent performance and stability, the AT7456E is widely used in the following fields:
Unmanned Aerial Vehicles (UAVs) and FPV Video Transmission Systems: Real-time overlay of key telemetry data—such as flight altitude, speed, GPS coordinates, battery voltage, and signal strength—provides pilots with an intuitive understanding of flight status.
Security Surveillance and CCTV Cameras: Overlaying date, time, camera ID, and zone names on surveillance footage facilitates video retrieval and incident tracing.
Industrial Monitoring and Handheld Measurement Instruments: Overlays scales, temperature readings, or operational status parameters on industrial endoscopes, thermal imagers, or handheld testing equipment.
Automotive Electronics and Dashcams: Overlays vehicle speed, time, date, and warning messages on reverse camera or driving footage to enhance driving safety.
Mingjiada Electronics: Genuine, In-Stock Products
As a professional supplier of electronic components deeply rooted in Shenzhen, Mingjiada Electronics maintains a large inventory of genuine AT7456E components in stock at all times. We guarantee 100% authenticity and can provide customers with samples quickly. Whether for component selection and debugging during the R&D phase or for mass production needs, we offer highly competitive prices and a stable supply guarantee.
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