Common external interface types
Parallel interface
Data is transferred in parallel;
The commonly used parallel ports are: 8080 timing (/RD /WR /CS RS DATA BUS),
800 timing (E R/W /CS RS DATA BUS), data bits: 4 BIT, 8 BIT, 16 BIT, 8 BIT, 24 BIT, the main characteristics: the speed of data transmission is fast; Transmission mode: point-to-point; The display data in the IC can be read out.
SPI interface
Data is transmitted in a certain sequence, bit by bit;
Commonly used SPI interface: 3-SPI (/CS SCL SI), 4-SPI (/CS RS SCL SI) transmission speed is relatively slow; Transmission mode: point-to-point; Data in IC should not be read in general:
IIC interface
Data is transmitted in a certain sequence, bit by bit;
Interface definition: SCL, SDI, SDO interface need pull-up resistors; The transmission speed is slow; Transmission mode: point opposite; Address lines are needed to distinguish individual IIC devices; Generally can not read the data in the IC;
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Common external interface types
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