pt6584 Princeton Technology Corp., pt6584 Datasheet - Page 26

• Manufacturer Part Number: pt6584
• Description: Lcd Driver Ic - Princeton Technology Corp
• Manufacturer: Princeton Technology Corp.

LCD Driver IC
NOTE ON THE CONTROLLER KEY DATA READ TECHNIQUES
TIMER BASED KEY DATA ACQUISITION
t5
t6
t7
t8
PT6584 V1.1
Key Input
Key S can
x Flowchart
x Timing Chart
: Key scan execution time when the key data agreed for two key scans. (800T(s))
: Key scan execution time when the key data did not agree for two key scans and the key scan
: Key address (43H) transfer time
: Key data read time
DO
CE
was executed again. (1600T(s))
DI
Ke y d ata r ea d r equ est
t5
Co ntrolle r d ete rmina tion
(key on )
t7
Key on
t8
Ke y d ata r ea d
t9
Co ntr olle r d ete r mina tion
t6
( key on )
t7
t8
T
t9
Key data read
Co ntrolle r d ete rmina tion
- 26 -
processing
fosc
1
CE=L
DO=L
(key off )
t5
YES
t9
Key on
NO
Co ntrolle r d ete rmina tion
(key on )
t7
t8
t9
t5
Co ntr olle r d ete r mina tion
URL:http://www.princeton.com.tw
( key off )
Fax:[phone]
Tel:[phone]
PT6584
August, 2006