GDM128128A Datasheet, PDF (4/14 Pages) List of Unclassifed Manufacturers – SPECIFICATIONS OF LCD MODULE

GDM128128A
Bus timing diagram
C/D
/CE
/RD
/WR
D0~D7
(WRITE)
D0~D7
(READ)
Tcds
Tce,Trd,Twr
Tds
Tacc
Tcdh
Tdh
Toh
8.Flowchart of communications with MPU
Status read
A status check must be performed before data is read or written. The status word format is as
follows:
/RD /WR /CE C/D STA7 STA5 STA5 STA4 STA3 STA2 STA1 STA0
0
1
0
1 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
STA0 Check command execution capability
0: disable 1:enable
STA1 Check data read / write capability
0: disable 1:enable
STA2 Check auto mode data read capability
0: disable 1:enable
STA3 Check auto mode data write capability
0: disable 1:enable
STA4 Not used
STA5 Check controller operation capability
0: disable 1:enable
STA6 Error flag. Used for screen peek and screen 0: no error 1: error
copy commands.
STA7 Check the blink condition
0: display off 1: normal display
Notes:
1. It is necessary to check STA0 and STA1 at the same time. There is a possibility of
erroneous operation due to a hardware interrupt.
2. For most modes STA0 / STA1 are used as a status check.
3. STA2 and STA3 are valid in auto mode; STA0 and STA1 are invalid.
4. When using the STA7=0 command, a status read must be performed. If a status check is
not carried out, the T6963C cannot operate normally, even after a delay time. The
hardware interrupt occurs during the address calculation period (at the end of each line).
V: A
4/15
2001/12/05