SA8807A

sames

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Diagram 1

2.

Addressing and Read/Write Mode Select

To access the SA8807A, a control byte has to be received first (after CE goes

active). This byte contains the information to initiate either a Read or Write mode

and an address.

The following bytes contain data until CE becomes inactive.

Address/Control Byte: The Address and Control Byte is the first byte sent after

CE goes active. To send another address, CE must first go inactive before going

active again. If the CE remains high, the device automatically increments the

address, for the following byte.

W/R = "1"

One or more write cycles to be sent.

W/R = "0"

Inititates one or more read cycles.

A5 - A0:

Address 5 to Address 0 selects the 6-bit HEX Address of RAM. (See LCD Character

Mapping)

SCK may be either polarity.