Features
 Flexible 1.5V - 3.6V operating voltage
 524,288 x 8-bit SRAM organization
 Serial Peripheral Interface (SPI) mode
0 compatible
– Byte, Page and Sequential modes
– Supports Single, Dual and Quad
I/O read and write
– Fast operation: the whole memory
can be filled in 1,048,590 or
read in 1,048,591 cycles (Quad-
I/O SPI, Quad address mode)
– XHOLD and XWP pins
 8-bit Parallel Interface (Simplified 8080
and NAND FLASH Type Interface)
– 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 with
Video DAC
– Supports Component and Composite
video formats (NTSC, PAL, RGB
etc.)
– 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
– Over 35 MHz for Video Display Controller
– (TBD) MHz for SRAM writes when
Video Display Controller enabled
 Active Low-power
– Read current 1.6 mA at 1 MHz (Single
I/O, SO=0, TA=+85C, VDD=3.3V)
 Industrial temperature range
– -40C to + 85C
 Pb-Free and RoHS compliant

Description
The VLSI Solution VS23S040D is an easy-touse
and versatile serial SRAM device. The
memory is accessed via an SPI compatible
serial bus. The device also contains Video
Display Controller, which can be configured
to continuously output analog composite video
from the memory array data to implement a
video frame buffer.