STM86312 STMicroelectronics, STM86312 Datasheet - Page 16

• 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
8.4
Note:
Note:
16/24
Display control command
Figure 9.
On power application, the 1/16-pulse width is set and the display is turned off.
On power application, key scanning is stopped.
Figure 10. Key scanning and display timing
* The value can be modified by trimmering R
One cycle of key scanning consists of one frame, and data of 6 x 4 matrices are stored in
RAM.
MSB
1
0
Display control command
-
-
b3
b2
b1
OSC
.
LSB
b0
011 : Set Pulse Width to 10/16
100 : Set Pulse Width to 11/16
101 : Set Pulse Width to 12/16
110 : Set Pulse Width to 13/16
111 : Set Pulse Width to 14/16
000 : Set Pulse Width to 1/16
001 : Set Pulse Width to 2/16
010 : Set Pulse Width to 4/16
TURNS ON/OFF DISPLAY
(Key Scan Continues note)
Display mode setting
0= Display OFF
1= Display ON
Don’t Care
STM86312