Document
STV7710
Vaccum fluorescent display (VFD) driver
Features
Figure 1. Block diagram
■ 96 outputs VFD driver ■ 90 V absolute maximum supply
CLK
F/R TEST
■ 3.3V/5V compatible logic ■ -40/30mA source/sink output MOS
DATA_A
96bit Shift register
DATA_B
■ -50/50mA source/sink output diode
P1
P96
■ 1-bit data bus (40 MHz)
) ■ BCD process t(s ■ Packaging: die form uc Description rod STV7710 is a driver for vacuum fluorescent P display (VFD) designed in the ST proprietary BCD te high voltage technology. Using a 1 bit wide data
bus, it can control 96 high current & high voltage
le outputs. The STV7710 is supplied with a so separated 70V power output supply. All command b inputs are CMOS and 3.3V logic levels Obsolete Product(s) - O compatible.
STB POC BLK
Latch
Q1 Q2
Q95 Q96
&&
&
&
&&
&
&
STV7710
VSSLOG VSSSUB VCC
VSSP
OUT1
OUT96
VPP
July 2007
Rev 3
1/21
www.st.com
21
Contents
Contents
STV7710
1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Die pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Mechanical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Alignment marks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Pads specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
) 4.2 Data bus configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 t(s 4.3 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
duc 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Pro 6
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
lete 7
AC timing requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Obso 8
AC timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
t(s) - 9
Input/ouput schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
uc 10
Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Prod 11
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Obsolete 12
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21
STV7710
1
Block diagram
Figure 2. STV7710 block diagram
CLK
Block diagram F/R TEST
DATA_A
96bit Shift register
P1
P96
DATA_B
te Product(s) STB bsole POC Product(s) - O BLK
Latch
Q1 Q2
Q95 Q96
&&
&
&
&&
&
&
STV7710
VSSLOG VSSSUB VCC
Obsolete VSSP
OUT1
OUT96
VPP
3/21
Die pin assignment
2
Die pin assignment
Figure 3. Die pin assignment 2.07
STV7710
OUT54 OUT43
OUT55 OUT56 OUT57
OUT42 OUT41 OUT40
roduct(s) y
lete P 0/0
x
5.89
lete Product(s) - Obso OUT95 OUT96
o VPP s VPP b VSSP O VSSP
OUT2 OUT1 VPP
VPP VSSP
VSSP
VSSLOG TEST
VSSSUB DATA_B DATA_A
BLK STB VCC POC F/R CLK VSSLOG
4/21
STV7710
3
Mechanical specification
3.1
Alignment marks
Figure 4. Alignment marks
min. 0.35 min 0.1
0.25
Mechanical specification Patterning restricted area
min. 0.35 min 0.1
0.25 0.15
t(s) 0.15
Obsolete Product(s) - Obsolete Produc 3.2
Pads specification
The reference is the centre of the die (x=0, y=0)
Table 1. Top side from left to right
Name
Centre: X
OUT54 OUT53 OUT52 OUT51 OUT50 OUT49 OUT48 OUT47 OUT46 OUT45
-773.67 -670.48 -567.29 -464.1 -360.91 -257.72 -154.53 -51.34 51.85 155.04
Centre: Y 2796.11 2796.11 2796.11 2796.11 2796.11 2796.11 2796.11 2796.11 2796.11 2796.11
Size: x 76.00 76.00 76.00 76.00 76.00 76.00 76.00 76.00 76.00 76.00
SIze: y 92.00 92.00 92.00 92.00 92.00 92.00 92.00 92.00 92.00 92.00
OUT44
258.23
2796.11
76.00
92.00
OUT43
361.42
2796.11
76.00
92.00
5/21
Mechanical specification
STV7710
Table 2. Bottom side from right to left
Name
Centre: X
Centre: Y
Size: x
SIze: y
VSSLOG
771.63
-2802.23
76.00
92.00
CLK
669.54
-2802.23
76.00
92.00
F/R POC
566.35 463.16
-2802.23 -2802.23
76.00 76.00
92.00 92.00
VCC
359.97
-2802.23
76.00
92.00
STB
257.63
-2802.23
76.00
92.00
BLK
154.44
-2802.23
76.00
92.00
DATA_A DATA_B
51.25 -119.85
-2802.23 -2802.23
76.00 76.00
92.00 92.00
VSSSUB
-567.88
-2802.23
76.00
92.00
TEST
) VSSLOG
-669.54 -771.63
-2802.23 -2802.23
ct(s Table 3. Right side from top to bottom
u Name
Centre: X
Centre: Y
rod OUT42
887.61
2050.11
P OUT41 te OUT40
887.61 887.61
1946.92 1843.73
le OUT39
887.