2 Sockets

The Flash Socket Boards offers different sockets to interface with your memory chip.

Figure 3: The SOIC-8/SOIC-8W Flash Socket Board provides SOIC-8 (150mil) and SOIC-8W (200mil) sockets for interfacing with your stand-alone memory chip.

Figure 4: The SOIC-16 Flash Socket Board provides a SOIC-16 socket for interfacing with your stand-alone memory chip.

Please note that each socket has its own dedicated 10-pin boxed header for connecting a Cheetah SPI Host Adapter. The signal pins of the 10-pin boxed headers are not cross connected.

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2.1 Compatible Chip Sizes

The sockets of the Flash Socket Boards are with standard sized chip packages. Figure 5 provides information about the supported sizes for all the sockets. Please note that all measurements are in millimeters (mm).

Figure 5: Diagrams of the supported package sizes. Please note that the diagrams are not to scale.

Compatible chip sizes for each of the sockets available on the Flash Socket Boards. All measurements are in millimeters (mm).

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2.2 Pinouts

The sockets of the Flash Socket Boards are compatible with standard SPI Serial Flash chip pinout configurations. Each socket is labeled with the specific pinout. Please verify that the Serial Flash memory chip that is to be programmed is compatible with the pinouts as seen in Figure 6 and Figure 7 .

On the Flash Socket Boards, VDD is nominally 3.3V and the HOLD and WP lines are tied to VDD through a weak pull-up resistor.

Figure 6: Pinouts for the SOIC-8 and SOIC-8W sockets on the SOIC-8/SOIC-8W Flash Socket Board .

Figure 7: Pinout for the SOIC-16 socket on the SOIC-16 Flash Socket Board .

If your Serial Flash memory chip has a non-standard pinout configuration, please consider using the EEPROM Socket Board. It is possible to arbitrarily assign signals to different pins with this board using its 8-pin split cable.