HD66773R Datasheet, PDF (51/133 Pages) Renesas Technology Corp – 262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels

HD66773R
GRAM read sequence
Set I/D, AM, HSA/HSE,
VSA/VEA bits
Address: N set
First word
Dummy read (invalid data)
GRAM => Read data latch
Read (data in address "N")
Second word ^{Read data latch => DB17-10}
DB8-1
Address: M set
First word
Dummy read (invalid data)
GRAM => Read data latch
Second word
Read (data in address "M")
Read data latch => DB17-10
DB8-1
i) Read data to microcomputer
Set I/D, AM, HSA/HSE,
VSA/VEA bits
Address: N set
First word
Dummy read (invalid data)
GRAM => Read data latch
Second word
Write (data in address "N")
DB17-10 => GRAM
DB8-1
Automatic address update: N+α
First word
Dummy read (invalid data)
GRAM => Read data latch
Second word
Write (data in address "N")
DB17-10 => GRAM
DB8-1
ii) Logical arithmetic operation inside HD66773R
Rev.1.10, Jun.21.2003, page 51 of 133