
ePVP6300
VFD Controller
44 of 63
11.04.2004
(V1.92)
This specification is subject to change without further notice.
8.1.2 Data Setting Command [01]
This command sets data write and data read modes. The default settings at power “ON” are
:
Address Increment Mode
:
“Address increment mode.”
Test Mode
:
“Normal operation mode.”
b3
Initial value
b5
0
b7
0
MSB
0
b0
0
0
b2
0
b4
0
b6
1
b1
LSB
Sets address increment mode (display memory)
0
:
Increments address after data has been written.
1
:
Fixes address
.
01
:
Write data to LED port.
10
:
Read key port switch data
11
:
Read switch status
.
00
:
Write data to display memory.
Not Relevant
Fig. 12 Data Setting Command Selection
8.1.3 Display Control Command [10]
When power is turned “ON,” the following default conditions prevails
:
4/64-pulse width is set and the display is turned off
Key & switch scanning is stopped
0
MSB
b4
1
Initial value
0
0
b6
0
b1
0
b3
b0
LSB
0
b5
b2
0
b7
Sets dimming
000 : Sets pulse width to 1/16
001 : Sets pulse width to 2/16
010 : Sets pulse width to 4/16
011 : Sets pulse width to 10/16
100 : Sets pulse width to 11/16
101 : Sets pulse width to 12/16
110 : Sets pulse width to 13/16
111 : Sets pulse width to 14/16
Turns on/off display.
0 : Display off (key & switch scan continues)
1 : Display on.
Fig. 13 Display Control Command Selection