STFPC311BTR STMicroelectronics, STFPC311BTR Datasheet - Page 22

• Manufacturer Part Number: STFPC311BTR
• Description: IC CTRL/DRIVER FRONT PNL 52-PQFP
• Manufacturer: STMicroelectronics

Specifications of STFPC311BTR

• 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
• Maximum Operating Temperature: + 85 C
• Maximum Clock Frequency: 1 MHz
• Maximum Output Current: 25 mA
• Maximum Power Dissipation: 1200 mA
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• 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: Details
• Other names: 497-6107-2

7 Programmable hotkeys
7
7.1
7.2
Note:
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Programmable hotkeys
IR Remote control
Eight (8) commands are user programmable for hot key functions.
The address of the appliance (8-bit) is stored first into the internal RAM. Then, the command for
the hot keys are programmed into the internal RAM. Each hot key memory address could
accommodate one byte (8-bits). Usually one byte is reserved for one command. The RC data
is only cleared when the READY is pulled low (system goes into STANDBY state).
Front panel keys
Eight out of 24 keys are user programmable for hot key functions. Only keys from KS1 to KS4
can be programmed.
Figure 18. Programmable hot keys (only KS1 to KS4, Box FPK1)
8 hot keys are to be placed in each address location as indicated by the hotkey setting
command.
Figure 19. HOTKEY setting command address locations (8 hot keys)
For example, to store (Seg2/Key2) at the first location of the hot key RAM, the following
commands are sent:
●
●
To store (Seg2/Key1), (Seg2/Key2), and (Seg4/Key1), the following commands are sent:
●
●
The same commands apply to FPK2 and FPK3 programming.
Note: Reading the hot key values immediately upon STBY de-assertion is recommended. If
they are not read within the watchdog preset timer value, the hot key data is cleared.
10110000 (command+address), and
00010000 (hot key mask).
10110000 (command+address), and
00110010 (hot key mask).
STFPC311