Connect SRAM 23LCV1024 via SPI

Other Hardware Storage
1

Hello,

I try to upgrade the arduino Mega 2560's SRAM from 8 kB to 128 kB.
The first is to conntect the 23LCV1024 with the arduino.
Here you can find a datasheet of the extern SRAM: http://ww1.microchip.com/downloads/en/DeviceDoc/25156A.pdf
According to the shematic of an arduino mega 2560 (http://elmicro.com/files/arduino/arduino-mega2560_r3-schematic.pdf)
I connected the following pins (http://arduino.cc/de/Reference/SPI):

2560-Pin 23LCV1024-Pin Function
53 CS (1) Chip Select Pin
50 SO (2) Serial Output
Ground VSS (4) Ground
51 SI (5) Serial Input
52 SCK (6) Serial Clock
nC VBat (7) BackupSupply Input
5V Vcc (8) Power supply

Furthermore I tested with the standard libraries SPI.h and SPIRAM.h. But I there is output.

Does someone know how to connect the SRAM? Which clock-frequency should I use? And how can I read/write the SRAM?

Thankyou

2

Hello,

I try to upgrade the arduino Mega 2560's SRAM from 8 kB to 128 kB.
The first is to conntect the 23LCV1024 with the arduino.
Here you can find a datasheet of the extern SRAM: http://ww1.microchip.com/downloads/en/DeviceDoc/25156A.pdf
According to the shematic of an arduino mega 2560 (http://elmicro.com/files/arduino/arduino-mega2560_r3-schematic.pdf)
I connected the following pins (http://arduino.cc/de/Reference/SPI):

2560-Pin 23LCV1024-Pin Function
53 CS (1) Chip Select Pin
50 SO (2) Serial Output
Ground VSS (4) Ground
51 SI (5) Serial Input
52 SCK (6) Serial Clock
nC VBat (7) BackupSupply Input
5V Vcc (8) Power supply

Furthermore I tested with the standard libraries SPI.h and SPIRAM.h. But I there is output.

Does someone know how to connect the SRAM? Which clock-frequency should I use? And how can I read/write the SRAM?

Thankyou

3

have a look at this post: Spi RAM library update - #11 by system - Storage - Arduino Forum

Enjoy,
M10