ST7781
9.7 8080-series MCU Read Cycle Sequence
The read cycle (/RD “1”- “0”- “1” sequence) means that the host reads information from display via interface. The driver sends
data (DB [17:0]) to the host when there is a falling edge of /RD and the host reads data when there is a rising edge of /RD.
Fig. 9.7 8080-Series /RD Protocol
Note: /RD is an unsynchronized signal (It can be stopped).
Fig. 9.7.1 8080-series parallel bus protocol, read data from register or display RAM
Ver. 1.7
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