EPVP6800 Datasheet, PDF (39/47 Pages) ELAN Microelectronics Corp – VFD Controller

ePVP6800
VFD Controller
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.”
MSB b7 b6 b5 b4 b3 b2 b1 b0 LSB
0 1 0 0 0 0 0 0 Initial value
Not Relevant
Sets address increment mode (display memory)
0 : Increments address after data has been written.
1 : Fixes address.
00 : Write data to display memory.
01 : Write data to LED port.
10 : Read key port switch data
11 : Read switch status.
Fig. 9 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
MSB b7 b6 b5 b4 b3 b2 b1 b0 LSB
1 0 0 0 0 0 0 0 Initial value
Turns on/off display.
0 : Display off (key & switch scan continues)
1 : Display on.
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
Fig. 10 Display Control Command Selection
This specification is subject to change without further notice.
11.28.2004 (V123) 33 of 47