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VS23S010C Datasheet Preview

VS23S010C Datasheet

1 Megabit SPI SRAM

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VS23S010C pdf
VS23S010C Datasheet
VS23S010C-L - 1 Megabit SPI SRAM
with Serial and Parallel Interfaces
and Integrated Video Display Controller
Features
Description
Flexible 1.5V - 3.6V operating voltage
131,072 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 mem-
ory can be filled in 262158 or read
in 262159 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 131077 cy-
cles
Integrated Video Display Controller with
Video DAC
Supports NTSC and PAL video for-
mats
Fully configurable by user
9-bit Video DAC and 8x Video PLL
High operating frequencies
Up to 36 MHz for SPI
The VLSI Solution VS23S010C-L is an easy-
to-use 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 video from the
memory array data to implement a video frame
buffer.
Alternatively, a 8-bit parallel interface can be
used to access the SRAM instead of the SPI.
To sum up, there are four separate operating
modes in VS23S010C-L:
SPI Single, Dual, or Quad operation and
4 General Purpose I/O pins
SPI Single, Dual, or Quad operation and
simultaneous Video Display Controller
8-bit Parallel Interface operation
8-bit Parallel Interface operation and si-
multaneous Video Display Controller
Applications
Microcontroller RAM extension
VoIP and internet data stream buffer
Audio data buffer
Video frame buffer
Over 35 MHz for Video Display Con-
troller
1
15 MHz for 8-bit parallel interface
(TBD) MHz for SRAM writes when
Video Display Controller enabled
Active Low-power
Read current 200 µA at 1 MHz (Sin-
gle I/O, SO=0, TA=+85C, VDD=3.3V)
SO/IO1
GND0
VideoOut #2
VideoOut #3
VideoOut #0
VideoOut #1
GND1
XWP/IO2
VXTALOUT
VXTALIN
XHOLD/IO3
SCLK
GND3
Industrial temperature range
-40C to + 85C
Pb-Free and RoHS compliant
Figure 1: LQFP48 pin out (not to scale)
Version: 0.9 [Preliminary], 2015-01-16
1



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VS23S010C Datasheet Preview

VS23S010C Datasheet

1 Megabit SPI SRAM

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VS23S010C pdf
VS23S010C Datasheet
Operating Modes
VS23S010C-L operates in one of four modes:
SPI, SPI and Video Display Controller, 8-bit
parallel mode or 8-bit parallel mode and Video
Display Controller.
8 Bit
Parallel Interface
1,048,576 bit
(128K x 8)
SRAM
Array
Video
Display
Controller
SPI
Serial Interface
control
Figure 2: SPI or 8-bit parallel interface and
Video Display Controller can be enabled at
the same time.
In SPI mode SRAM and control registers can
be accessed. Dual-I/O and Quad-I/O modes
are used only for SRAM read and write.
When Video Display Controller is enabled SPI
can be used simultaneously. There is an ad-
ditional limit to maximum SPI access rate in
this mode.
When 8-bit parallel interface is used to ac-
cess SRAM, SPI must be inactive. Video Dis-
play Controller can be operational simultane-
ously. However, Video Display Controller can
be controlled only by SPI. There is a limit
to maximum access rate for 8-bit parallel in-
terface when Video Display Controller is en-
abled.
Following are connection examples for differ-
ent operating modes. Some I/Os of VS23S010C-
L are unconnected, because they have inter-
nal pull-up or pull-down resistors. Note also,
that power and ground connections are not
shown in the following examples.
IO
IO
IO
IO
Micro−controller
control
clock
data
data
XCS
SCLK
SI/IO0
SO/IO1
XWP/IO2
XHOLD/IO3
PIO4 VS23S010
PIO5
PIO6
PIO7
XCSPAR
XRD
XWR
PGCLK
XRESET
MVBLK
VIDEOOUT
SPI connection, minimum configuration
Micro−controller
IO
IO
IO
IO
IO
IO
control
clock
data
data
control
control
XCS
SCLK
SI/IO0
SO/IO1
XWP/IO2
XHOLD/IO3
PIO4 VS23S010
PIO5
PIO6
PIO7
XCSPAR
XRD
XWR
PGCLK
XRESET
MVBLK
VIDEOOUT
SPI connection, basic configuration
Micro−controller
IO
IO
IO
IO
IO
IO
control
clock
data
data
control
control
XCS
SCLK
SI/IO0
SO/IO1
XWP/IO2
XHOLD/IO3
PIO4
VS23S010
PIO5
PIO6
PIO7
XCSPAR
XRD
XWR
PGCLK
XRESET
MVBLK
VIDEOOUT
SPI Dual−I/O connection
Version: 0.9 [Preliminary], 2015-01-16
2


Part Number VS23S010C
Description 1 Megabit SPI SRAM
Maker VLSI
Total Page 30 Pages
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