Silan
Semiconductors
VFD CONTROLLER/DRIVER
The SC16311 is a FIP (Fluorescent Indicator Panel or Vacuum
Fluorescent Display) controller/driver that is driven on a 1/8- to 1/16
duty factor. It consists of 12 segment output lines, 8 grid output lines,
8 segment/grid output drive lines, a display memory, a control circuit,
and a key scan circuit. Serial data is input to the SC16311 through a
three-line serial interface. This FIP controller/driver is ideal as a
peripheral device of a single-chip microcomputer.
SC16311
FEATURES
•
Many display modes (12-segment & 16-digit to 20-segment &
8-digit)
• Key scanning (12x4 matrices)
• Dimming circuit (eight steps)
• High-voltage output (V
DD
-35 V max).
• LED ports (5 chs., 20 mA max).
• General-purpose input port (4 bits)
• No external resistor necessary for driver
outputs (P-ch open-drain + pull-down
resistor output)
• Serial interface (CLK, STB, D
IN
, D
OUT
)
QFP-52-14 x 14
PIN CONFIGURATION
LED
1
LED
2
LED
3
LED
4
LED
5
Grid
1
Grid
2
Grid
3
OSC
Grid
4
41
52
SW
1
1
SW
2
2
SW
3
3
SW
4
4
D
OUT
5
D
IN
6
IC 7
CLK 8
STB 9
KEY
1
10
KEY
2
11
KEY
3
12
KEY
4
13
14
V
DD
15
Seg
1
/
KS
1
16
Seg
2/
KS
2
17
Seg
3/
KS
3
18
Seg
4/
KS
4
19
Seg
5/
KS
5
20
Seg
6/
KS
6
21
Seg
7/
KS
7
22
Seg
8/
KS
8
23
Seg
9/
KS
9
24
Seg
10/
KS
10
25
Seg
11/
KS
11
26
Seg
12/
KS
12
51
50
49
48
47
46
45
44
43
42
40
39 Grid
6
38 Grid
7
37 Grid
8
36 Seg
20
/Grid
9
35 Seg
19
/Grid
10
34 V
EE
Grid
5
33 V
DD
32 Seg
18/
Grid
11
31 Seg
17/
Grid
12
30 Seg
16/
G
rid13
29 Seg
15/
G
rid14
28 Seg
14/
G
rid15
27 Seg
13/
G
rid16
V
DD
V
SS
SC16311
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2001.11.8.
1
Silan
Semiconductors
BLOCK DIAGRAM
SC16311
seg1
seg2
seg3
seg4
seg5
seg6
seg7
seg8
seg9
seg10
seg11
seg12
seg13/Grid16
seg14/Grid15
seg15/Grid14
seg16/Grid13
seg17/Grid12
seg18/Grid11
Grid1
Grid2
Grid3
Grid4
Grid5
Grid6
Grid7
Grid8
Command decoder
D
IN
D
OUT
CLK
STB
V
DD
R
OSC
Timing generator key scan
Serial I/F
Display memory
20 bit x 16 Word
20-bit output
latch
20
12
8
Data selector
Key data memory(4 x 12)
Key1
~
Key4
SW1
~
SW4
16-bit shift register
4
4-bit latch
8
16
8
4
LED1~LED5
V
DD
V
SS
V
EE
(+5V) (0V) (-30V)
ABSOLUTE MAXIMUM RATINGS
Characteristics
Logic Supply Voltage
Driver Supply Voltage
Logic Input Voltage
FIP Driver Output Voltage
LED Driver Output Current
FIP Driver Output Current
Power Dissipation
Operating Ambient
Temperature
Storage Temperature
Symbol
V
DD
V
EE
V
I1
V
O2
I
O1
I
O2
P
D
T
OPT
T
STG
Value
-0.5~ +7.0
V
DD
+0.5 ~V
DD-
40
-0.5~V
DD
+0.5
V
EE
-0.5~V
DD
+0.5
+25
-40(grid)
-15(segment)
1200*
-40~+85
-65~+150
Grid driver
5-bit latch
Segment/grid
driver
8
Segment driver
Diming
circuit
Units
V
V
V
V
mA
mA
mW
°C
°C
*: Dreate at –9.6 Mw/
°C
at Ta= 25°C or higher.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2001.11.8.
2
Silan
Semiconductors
SC16311
Symbol
V
DD
V
IH
V
IL
V
EE
RECOMMENDED OPERATING CONDITIONS
(Ta = -20 to +70°C, V
SS
= 0 V)
Characteristics
Logic Supply Voltage
High-Level Input Voltage
Low-Level Input Voltage
Driver Supply Voltage
Min.
4.5
0.7V
DD
0
0
Typ.
5
Max.
5.5
V
DD
0.3V
DD
V
DD
~35
Unit
V
V
V
V
ELECTRICAL CHARACTERISTICS
(TA=-20~+70°C,V
DD
=4.5~5.5V, V
SS
=0V, V
EE
=V
DD
-35V)
Characteristics
High-Level Output
Voltage
Low-Level Output
Voltage
Low-Level Output
Voltage
High-Level Output
Current
High-Level Output
Current
Driver Leakage Current
Output Pull-Down
Resistor
Input Current
High-Level Input
Voltage
Low-Level Input
Voltage
Hysteresis Voltage
Dynamic Current
Consumption
Symbol
V
OH1
V
OL1
V
OL2
I
OH21
I
OH22
IOLEAK
RL
I
I
V
IH
V
IL
V
H
I
DD
dyn
Test conditions
LED, I
OH1
=-1mA
LED, I
OL1
=20mA
D
OUT
, I
OL2
=4mA
V
O
=V
DD
-2V, Seg1~Seg12
V
O
=V
DD
-2V, Grid1~Grid8,
Seg13/Grid16 ~Seg18/Grid11
V
O
=V
DD
-35V, driver off
driver output
V
I
=V
DD
or V
SS
Min.
0.9V
DD
Typ.
Max.
Unit
V
1
0.4
-3
-15
-10
50
100
150
±1
0.7V
DD
0.3V
DD
V
V
mA
mA
µA
KΩ
µA
V
V
V
CLK, DIN, STB
Under no load, display off
0.35
5
mA
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2001.11.8.
3
Silan
Semiconductors
SWITCHING CHARACTERISTICS
Characteristics
Oscillation
Frequency
Propagation Delay
Time
SC16311
(Ta = -20 to +70°C, V
DD
= 4.5 to 5.5 V, V
EE
= -30 V)
Symbol
t
OSC
t
PLZ
t
PZL
t
TZH1
Test conditions
R=56kΩ
CLK→D
OUT
, C
L
=15pF,
R
L
=10KΩ
Seg1~Seg12
C
L
=300pF
Grid1~Grid8
Seg13/Grid16~
Seg20/Grid9
Min.
350
Typ.
500
Max.
650
300
100
2
0.5
120
Unit
kHz
ns
ns
µs
µs
µs
MHz
Rise Time
t
TZH2
t
TZH
f
max
CI
Fall time
Maximum Clock
Frequency
Input Capacitance
C
L
=300pF, Segn, Gridn
Duty = 50%
1
15
pF
TIMING CONDITIONS
Characteristics
Clock Pulse Width
Strobe Pulse Width
Data Setup Time
TA=-20~+70°C, VDD=4.5~5.5V
Symbol
PWCLK
PWSTB
t
SETUP
Test conditions
Min.
400
1
100
100
Typ.
Max
Unit
ns
µs
ns
ns
µs
µs
Data Hold Time
Clock-Strobe Time
Wait Time
t
HOLD
t
CLK
-STB
t
WAIT
CLK↑→STB↑
CLK↑→ CLK↓
1
1
PIN DESCRIPTION
Pin NO
1~4
5
6
7
Symbol
SW1~SW4
D
OUT
D
IN
IC
Pin name
Switch input
Data output
Data input
Internally
connected
Description
These pins constitute 4-bit general-purpose input port
Output serial data at falling edge of shift clock, starting
from lower bit. This is N-ch open-drain output pin.
Inputs serial data at rising edge of shift clock, starting
from lower bit.
Be sure to leave this pin open (this pin is at VDD level)
(To be continued)
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2001.11.8.
4
Silan
Semiconductors
(Continued)
SC16311
Pin name
Description
Reads serial data at rising edge, and outputs data at
falling edge.
Initializes serial interface at rising or falling edge to make
SC16311waiting for reception of command. Data input
after STB has fallen is processed as command. While
command data is processed, current processing is
stopped, and serial interface is initialized. While STB is
high, CLK is ignored.
Data input to these pins is latched at end of display
cycle.
5V±10%
Segment output pins.
Pin NO
8
Symbol
CLK
Clock input
9
STB
Strobe
10~13
14,33,45
15~26
27~32,
35, 36
34
37~44
46-50
51
52
Key1~Key4
V
DD
Seg1/KS1~
Seg12/KS12
Seg13/Grid16~S
eg20/Grid9
V
EE
Grid8 ~ Grid1
LED1~LED5
V
SS
OSC
Key data input
Logic power
High-voltage
output (segment)
High-voltage
output
(grid/segment)
Pull-down level
High-voltage
output (grid)
LED output
Logic ground
Oscillator pin
These pins are selectable for segment or grid output.
V
DD
-35V
Grid output pins
CMOS output. +20mV .max.
Connect this pin to GND of system.
Connect resistor for determining oscillation frequency to
this pin.
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0
2001.11.8.
5
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