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LV24- v6 Development System
MikroElektronika
page
14.0. RAM Module
Owing to the 23K640 circuit, the development system is provided with 64Kbit RAM modul that can be connected to the microcontroller
via SPI interface. The function of the serial RAM module is to expand available RAM of the microcontroller. To establish connection
between the microcontroller and RAM module, it is necessary to enable serial communication using DIP switch SW14. In the example
in figure 14-2, RAM module is connected to the microcontroller pins RB14, RB13, RB12 and RB0 using DIP switch SW14. Alternatively,
RG8, RG7, RG6 and RC3 microcontroller pins may also be used for this purpose. The function of the RB1 (RAM-HOLD#) switch on
the DIP switch SW15 is to hold communication between the microcontroller and RAM module. The RB0 (RAM-CS) switch on the DIP
switch SW14 is used to control the access to RAM.
Figure 14-2
: Serial RAM connection schematic
Serial RAM is connected to the microcontroller via RB14, RB13, RB12, RB0 ans RB1 pins
Figure 14-1
: Serial RAM module
64Kbit RAM module can be added
to the microcontroller RAM
