The SW data is read by a read command, starting from the least significant bit. Bits 5 through 8 of the SW data
0 0 0 0 b3 b2 b1 b0
A command sets the display mode and status of the FIP driver.
The first 1 byte input to the PD16311 through the DIN pin after the STB pin has fallen is regarded as a command.
If STB is made high while a command/data is transmitted, serial communication is initialized, and the
command/data being transmitted is invalid (however, the command/data already transmitted remains valid).
(1) Display mode setting command
This command initializes the PD16311 and selects the number of segments and number of grids (1/8 to 1/16
duty, 12 segments to 20 segments).
When this command is executed, display is forcibly turned off, and key scanning is also stopped. To resume
display, a display ON command must be executed. If the same mode is selected, however, nothing is
0 0 − − b3 b2 b1 b0
Selects display mode
0xxx : 8 digits, 20 segments
1000 : 9 digits, 19 segments
1001 : 10 digits, 18 segments
1010 : 11 digits, 17 segments
1011 : 12 digits, 16 segments
1100 : 13 digits, 15 segments
1101 : 14 digits, 14segments
1110 : 15 digits, 13 segments
1111 : 16 digits, 12 segments
On power application, the 16-digit, 12-segment mode is selected.