HD66789 Datasheet, PDF (62/156 Pages) Renesas Technology Corp – 528-channel, One-chip Driver for Amorphous TFT Panels with 262,144-color display RAM, Power Supply Circuit, and Gate Circuit

HD66789
Preliminary
Set the I/D, AM, HSA/HSE, and
VSA/VEA bits
Address: N set
First word
Dummy read (invalid data)
GRAM Read-data latch
Set the I/D, AM, HSA/HSE, and
VSA/VEA bits
Address: N set
First word
Dummy read (invalid data)
GRAM Read-data latch
Second word
Read (data of address n)
Read-data latch DB17-0
Second word
Write (data of address n)
DB17-0 GRAM
First word
Address: M set
Dummy read (invalid data)
GRAM Read-data latch
Automatic address update: N +α
First word
Dummy read (invalid data)
GRAM Read-data latch
Second word
Read (data of address n)
Read-data latch DB17-0
Second word
Write(data of address n)
DB17-0 GRAM
i) Read data to the microcomputer
ii) Logical arithmetic operacion inside HD66789
GRAM read sequence
Rev.0.12, May 09 2003, page 62 of 156