VS23S040D-B is a flexible four megabit SRAM memory and a PAL/NTSC video controller with SPI or 8-bit parallel bus. It contains an internal video DAC, memory and all the necessary timing and control logic to display a composite video image (external crystal needed). In a typical application, a microcontroller configures the device registers and sets up a frame buffer in the internal memory. The VS23S040 then keeps displaying that image and the microcontroller can update the video memory to modify the picture.

If the Video Controller is not needed, VS23S040D-B can be used as a standard SPI SRAM or a 8-bit parallel bus SRAM memory.

Features

• Flexible 1.5V - 3.6V operating voltage

• 524,288 x 8-bit SRAM organization

• Available in 5x5mm BGA24 package

• Serial Peripheral Interface (SPI) compatible
  • Byte, Page, and Sequential modes
  • Supports Single, Dual and Quad input read and write
  • Fast operation: the whole memory can be filled or read in 1,048,591 cycles (Quad-I/O SPI)
  • XHOLD and XWP pins
• 8-bit Parallel Interface (Simplified 8080 and NAND FLASH Type Interface, VS23S010D-L only)
  • Sequential read and write in 4-byte blocks
  • Fast operation, the whole memory can be filled or read in 524,293 cycles
• Integrated video display controller
  • Supports up to four NTSC and PAL composite video outputs
    • NTSC requires 3.58 or 28.64 MHz (8x colour carrier) crystal / clock input
    • PAL requires 4.43 or 35.47 MHz (8x colour carrier) crystal / clock input
  • Alternatively supports analog component (RGB) output
  • Fully configurable by user
  • 9-bit Video DAC and 8x video PLL
• High operating frequencies
  • Up to 38 MHz for SPI
  • Up to 40 MHz for 8-bit parallel interface (VS23S010D-L only)
  • Over 35 MHz for Video Display Controller
• Low-power CMOS technology
  • Read current 1.6 mA at 1 MHz (Single I/O, SO=0, TA=+85°C, VDD=3.3V)

• Industrial temperature range from -40°C to +85°C

• Pb-Free and RoHS compliant package