APD-32A025A Vishay, APD-32A025A Datasheet - Page 9

• Manufacturer Part Number: APD-32A025A
• Description: Intelligent Plasma Display
• Manufacturer: Vishay

Document Number: 37081
Revision 24-May-05
LKS
100µS
LDS
100µS
LTR
OP Code
100µS
LDM
100µS (AUTO)
200µS (AUTO)
INC., DEC)
Load Keyboard/Character Status
Loads keyboard status register. Bit “b” enables the keyboard scan. Bit “a” determines the type of scanning, either 16 or
64 keys. Note: For proper operation bits “c”, “d” and “e” must be set as shown
Get Display Status
The APD-32A025A’s display status register is loaded by this instruction. Bit ”e” switches display on/off. Bit “d” when
logical 1 will cause the entire display to blink at approximately 1 Hz. Bit “c” allows the cursor to blink beneath the
character displayed in cursor position. Bit “6” = 1 sets internal index F-F. Bit “b” = 0 resets the index F-F. If the index
F-F is set , every LDM (load display memory) or GDM (get display memory) instruction will automatically increment or
decrement the cursor, depending on bit “a” ()a = 0 decrement; a = 1 increment).
Load Timer Register
0
This command is only maintained for compatibility with earlier model APD-32A025. Executing the command has no
affect on operation
Load Display Memory
Loads display refresh memory at the location pointed to by the cursor.
1 0 1 1 0 0 b a
0 0 0 e d c b a
1
0 0 f e d c b a
ASCII code
1
e
d
64 key scan = 1; 16 = 0
keyboard scan on = 0; off = 1
.
up/down cursor UP = 1; DOWN = 0
index/non-index cursor INDEX = 1; NON-INDEX = 0
cursor blink on/off ON = 1; OFF = 0
Display on/off ON = 0; OFF = 1
c
b
a
APD-32A025A
Vishay Dale
www.vishay.com
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