
T6B65AFG
2005-06-01
7
●
Test mode select
/ WR D / I DB7
················································
DB0
Code
0
0
0
0
0
0
1
*
*
*
*: INVALID
This command selects the Test mode. Do not use this command.
●
Set Z-address
(Display Start Line)
/ WR D / I DB7
················································
DB0
Code
0
0
0
1
A
A
A
A
A
A
This command specifies which RAM line (0 to 63) is displayed at the top of the screen. When the display
duty is more than 1 / 64 (e.g., 1 / 33, 1 / 49), display begins at a line within the range 1 to 33 or 1 to 49.
This command only applied to display RAM. The line following the last line of the display RAM is the flag
RAM.
●
Set X-address
/ WR D / I DB7
················································
DB0
Code
0
0
1
0
A
A
A
A
A
A
This command sets the X-address (0 to 63). When the Counter Up / Down Select command selects this
address counter, reading or writing to the RAM causes the X-address to increment or decrement
automatically.
In X-Counter / Up mode, if the previous X-address is 63, the new X-address after the increment will be 0
and the Y (page)-address will be incremented. In Y-Counter / Down mode, if the previous X-address is 0, the
new X-address after the decrement will be 63 and the Y (page)-address will be decremented.
●
Set Y (Page)-address
/ WR D / I DB7
················································
DB0
0
0
1
1
*
1
A
A
A
A
Flag mode
Code
0
0
1
1
*
0
A
A
A
A
Display RAM mode *: INVALID
This command sets the Y (page) -address and also selects Flag mode or Display RAM mode.
In Flag mode, you can read data from or write data to Flag RAM only but cannot access the Display RAM.
In Display RAM mode, you can read data from or write data to the Display RAM only but cannot access
the Flag RAM.
When the Counter Up / Down Select command selects this address counter, reading from or writing to the
RAM causes the Y-address to increment or decrement automatically.
In Y-Counter / Up mode, if the previous Y-address is 9, the new Y-address after the increment will be 0 and
the X-address will be incremented. In Y-Counter / Down mode, if the previous Y-address is 0, the new
Y-address after the decrement will be 9 and the X-address will be decremented.
In Flag mode, only Y-Counter / Up or Down mode is permitted.