STFPC311 STMicroelectronics, STFPC311 Datasheet - Page 18

• Manufacturer Part Number: STFPC311
• Description: IC CTRLR/DRVR FRONT PANEL 52PQFP
• Manufacturer: STMicroelectronics

Specifications of STFPC311

• Display Type: Vacuum Fluorescent (VF)
• Interface: Serial
• Current - Supply: 5mA
• Voltage - Supply: 3 V ~ 33.3 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 52-MQFP, 52-PQFP
• For Use With: 497-8394 - BOARD DEMO STFPC311/ST72264497-6454 - BOARD EVAL BASED ON STFPC311
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Configuration: -
• Digits Or Characters: -
• Lead Free Status / Rohs Status: No

6 Commands
6
6.1
Table 3.
Note:
18/39
Commands
A command sets the display mode and status of the VFD driver. The first 1-byte input to the
STFPC311 through the D
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).
Configuration mode setting command
This command initializes the STFPC311 and performs any one of the following functions see
Figure 14.
Figure 14. STFPC311 Configuration mode setting command order
Based on Bit 5 through Bit 4 settings.
STFPC311 Configuration mode bit 3 through bit 0 settings
a)
b)
c)
d)
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 off. To
resume display, the Display ON command must be executed. If the same mode is
selected, nothing is performed.
Selects the remote control protocol to use.
Sets the watchdog timer. The watchdog timer is configurable from 1s to 15s or turned
off completely.
Sets the watchdog action to perform when the watchdog timer counts. Two actions
are allowed: no action, and set STBY to (logic) high level.
IN
pin after the STB pin goes low is regarded as a command. If STB is
STFPC311