UPD16311 NEC, UPD16311 Datasheet - Page 7

• Manufacturer Part Number: UPD16311
• Description: 1/8- to 1/16-DUTY FIPTM VFD CONTROLLER/DRIVER
• Manufacturer: NEC

SW Data
are 0.
Command
command/data being transmitted is invalid (however, the command/data already transmitted remains valid).
(1) Display mode setting command
The SW data is read by a read command, starting from the least significant bit. Bits 5 through 8 of the SW data
A command sets the display mode and status of the FIP driver.
The first 1 byte input to the
If STB is made high while a command/data is transmitted, serial communication is initialized, and the
This command initializes the
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
performed.
On power application, the 16-digit, 12-segment mode is selected.
MSB
0


PD16311 through the D
0
MSB


Don't care
PD16311 and selects the number of segments and number of grids (1/8 to 1/16
0
0
b3 b2 b1 b0
0
0
b3 b2 b1 b0
IN
pin after the STB pin has fallen is regarded as a command.
LSB
Selects display mode
0xxx
1000
1001
1010
1011
1100
1101
1110
1111
LSB
: 8 digits, 20 segments
: 9 digits, 19 segments
: 10 digits, 18 segments
: 11 digits, 17 segments
: 12 digits, 16 segments
: 13 digits, 15 segments
: 14 digits, 14segments
: 15 digits, 13 segments
: 16 digits, 12 segments
SW1
SW2
SW3
SW4
PD16311
7