STM86312 STMicroelectronics, STM86312 Datasheet - Page 14

• Manufacturer Part Number: STM86312
• Description: IC DRIVER/CONTROLLER VFD 44PQFP
• Manufacturer: STMicroelectronics

Specifications of STM86312

• Display Type: Vacuum Fluorescent (VF)
• Configuration: 16 Segments
• Interface: Serial
• Digits Or Characters: 4 Digits
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-MQFP, 44-PQFP
• Driver Type: VFD Drivers
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Maximum Output Current: 25 mA
• Minimum Operating Temperature: - 40 C
• For Use With: 497-5046 - KIT TOOL FOR ST7/UPSD/STR7 MCU
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Supply: -
• Lead Free Status / Rohs Status: No
• Other names: 497-4363

Commands
8
8.1
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Commands
A command sets the display mode and status of the VFD driver.
The first 1 byte input to the STM86312 through the D
regarded as a command. If STB is set high while commands/data are transmitted, serial
communication is initialized, and the commands/data being transmitted are invalid
(however, the commands/data already transmitted remain valid).
Display mode setting command
This command initializes the STM86312 and selects the number of segments and number
of grids (1/4 to 1/11 duty, 11 segments to 16 segments).
When this command is executed, display is forcibly turned off, and key scanning is also
stopped. To resume display, the display ON command must be executed. If the same mode
is selected, however, nothing is performed.
Figure 6.
On power application, the 11-digit 11-segment mode is selected.
MSB
0
0
Display mode settings
-
-
-
b2
b1
LSB
b0
IN
pin after the STB pin has fallen is
110 : 10 digits, 12 segments
111 : 11 digits, 11 segments
000 : 4 digits, 16 segments
001 : 5 digits, 16 segments
010 : 6 digits, 16 segments
100 : 8 digits, 14 segments
101 : 9 digits, 13 segments
011 : 7 digits, 15 segments
Display mode setting
Don’t Care
STM86312