STM86312 STMicroelectronics, STM86312 Datasheet - Page 10

• 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

Display RAM address and display mode
5
Note:
10/24
Display RAM address and display mode
The display RAM stores the data transmitted from an external device to the STM86312
through the serial interface; addresses are as follows, in 8-bits unit:
RAM stores addresses
"0" in memory means V
The key matrix is of 6 x 4 configuration, as shown below
Figure 3.
Seg1
b0
0A H
0C H
0E H
00 H
02 H
04 H
06 H
08 H
10 H
12 H
14 H
Key matrix and key-input data storage RAM
L
L
L
L
L
L
L
L
L
L
L
Seg4
XX H
EE
L
on output; "1" in memory means V
0C H
00 H
02 H
04 H
06 H
08 H
0A H
0E H
10 H
12 H
14 H
Seg8
U
U
U
U
U
U
U
U
U
U
U
b3
Seg12
0D H
0B H
0F H
01 H
03 H
05 H
07 H
09 H
13 H
15 H
11 H
b4
L
L
L
L
L
L
L
L
L
L
L
DD
on output.
XX H
Seg16
0B H
0D H
0F H
01 H
03 H
05 H
07 H
09 H
11 H
13 H
15 H
U
U
U
U
U
U
U
U
U
U
U
U
STM86312
DIG1
DIG2
DIG3
DIG4
DIG5
DIG6
DIG7
DIG8
DIG9
DIG10
DIG11
b7