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STM86312 Datasheet(PDF) 5 Page - STMicroelectronics

Part No. STM86312
Description  1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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STM86312
5/16
Table 6: Switching Characteristics (VDD = 4.5 to 5.5V, VSS =0V, VEE =VDD -35V, TA = -20 to 70°C,
unless otherwise noted. Typical values are at TA = 25°C)
Table 7: Timing Characteristics (VDD = 4.5 to 5.5V, TA = -20 to 70°C, unless otherwise noted. Typical
values are at TA = 25°C)
NOTE 1: Refer to page Serial Communication Format.
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:
"0" in memory means VEE on output; "1" in memory means VDD on output.
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
tPLZ
Propagation Delay
CLK
→ D
OUT
RL =10kΩ,CL =15pF
300
ns
tPZL
100
tTZH1
Rise Time
CL = 300 pF
Seg1 to Seg11
2
µs
tTZH2
Grid1 to Grid6, Seg12/
Grid11 to Seg16/Grid7
0.5
tTHZ
Fall Time
CL = 300 pF, Segn, Gridn
120
µs
fMAX
Maximum Clock Frequency
Duty = 50%
1
MHz
CI
Input Capacitance
15
pF
Symbol
Parameter
Test Conditions
Value
Unit
Min.
Typ.
Max.
PWCLK Clock Pulse Width
400
ns
PWSTB Strobe Pulse Width
1
µs
tSETUP
Data Setup Time
100
ns
tHOLD
Data Hold Time
100
ns
tCLK-STB Clock-Strobe Time
CLK
↑→ STB↑
1µs
tWAIT
Wait Time (Note 1)
CLK
↑→ CLK↓
1µs
Seg1
Seg4
Seg8
Seg12
Seg16
00 HL
00 HU
01 HL
01 HU
DIG1
02 HL
02 HU
03 HL
03 HU
DIG2
04 HL
04 HU
05 HL
05 HU
DIG3
06 HL
06 HU
07 HL
07 HU
DIG4
08 HL
08 HU
09 HL
09 HU
DIG5
0A HL
0A HU
0B HL
0B HU
DIG6
0C HL
0C HU
0D HL
0D HU
DIG7
0E HL
0E HU
0F HL
0F HU
DIG8
10 HL
10 HU
11 HL
11 HU
DIG9
12 HL
12 HU
13 HL
13 HU
DIG10
14 HL
14 HU
15 HL
15 HU
DIG11
b0
b3 b4
b7
XX HL
XX HU




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