Microchip Technology MEB II, User Manual

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Hardware
©
2013-2014 Microchip Technology Inc. DS70005148B-page 25
2.1.4 EBI SRAM Memory (Optional)
The MEB II includes an External Bus Interface (EBI) routed to support both
asynchronous SRAM and pseudo-SRAM memories. By default, these memories are
not populated on the board and users can populate them as needed. The interface is
routed considering both ISSI SRAM (IS61WV51216BLL-10TLI) and pseudo-SRAM
(IS66WVE4M16BLL-70BLI) memories, as shown in
Figure 2-4 .
FIGURE 2-4: EBI SRAM MEMORY
2.1.5 VGA Camera Sensor
The MEB II includes an Omnivision OVM7690 VGA camera sensor with an active array
size of 640 x 480 (VGA resolution), as shown in
Figure 2-5 . The PIC32 microcontroller
uses the I
2
C interface to control the sensor and the sensor communicates the image
data through an 8-bit (DATA7-DATA0) data bus.
FIGURE 2-5: VGA CAMERA SENSOR