STFPC311(2012) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
STFPC311 Datasheet PDF : 39 Pages
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STFPC311
6
Commands
Commands
A command sets the display mode and status of the VFD driver. The first 1-byte input to the
STFPC311 through the DIN pin after the STB pin goes low is regarded as a command. If
STB is set to high while commands/data are transmitted, the serial communication is
initialized and the commands/data being transmitted are invalid (however, the
commands/data already transmitted remain valid).
6.1
Configuration mode setting command
This command initializes the STFPC311 and performs any one of the following functions
) see Figure 14.
t(s a) 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, the display is turned
uc off. To resume display, the Display ON command must be executed. If the same
d mode is selected, nothing is performed.
ro b) Selects the remote control protocol to use.
P c) Sets the watchdog timer. The watchdog timer is configurable from 1s to 15s or
te turned off completely.
le d) Sets the watchdog action to perform when the watchdog timer counts. Two actions
o are allowed: no action, and set STBY to (logic) high level.
bs Figure 14. STFPC311 configuration mode setting command order
Obsolete Product(s) - O Figure 15. STFPC311 configuration mode bit 3 through bit 0 settings
Note:
Based on bit 5 through bit 4 settings.
Doc ID 12324 Rev 2
19/39
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