Ordering number : EN5606A
SANYO Semiconductors
DATA SHEET
LC75725E
Overview
CMOS IC
1/4 to 1/11 Duty Dynamic Drive VFD Driver
The LC75725E is a 1/4 to 1/11 duty dynamic drive VFD driver. It provides 43 segment outputs and 11 digit outputs.
It facilitates the construction of display systems operating under the control of a controller.
Features
•
•
•
•
•
•
Dynamic drive display technique to display four to eleven digits on the VFD.
Serial data input supports CCB* format communication with the system controller.
The dimmer level is controlled by serial data input. (The dimmer has a resolution of 10 bits.)
High generality since display data is displayed without the intervention of a decoder.
All segments can be turned off with the BLK pin.
CR oscillator circuit.
Specifications
Absolute Maximum Ratings
at Ta = 25°C, V
SS
= 0 V
Parameter
Maximum supply voltage
Symbol
V
DD
max
V
FL
max
V
IN1
V
IN2
V
OUT1
V
OUT2
I
OUT1
I
OUT2
Pd max
Topr
Tstg
V
DD
V
FL
DI, CL, CE, BLK
OSCI
S1 to S43, G1 to G11
OSCO
S1 to S43
G1 to G11
Ta = 85°C
Conditions
Ratings
–0.3 to +6.5
V
DD
– 47 to V
DD
+0.3
–0.3 to +6.5
–0.3 to V
DD
+0.3
V
DD
– 47 to V
DD
+0.3
–0.3 to V
DD
+0.3
10
30
300
–40 to +85
–50 to +150
mA
mW
°C
°C
V
V
Unit
Input voltage
Output voltage
V
Output current
Allowable power dissipation
Operating temperature
Storage temperature
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
addresses are controlled by SANYO.
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
91004TN (OT) /3398HA (OT) No. 5606-1/14
LC75725E
Allowable Operating Ranges
at Ta = –40 to +85°C, V
DD
= 4.5 to 5.5 V, V
SS
= 0 V
Parameter
Symbol
V
DD
V
FL
V
IH1
V
IH2
V
IL
f
OSC
R
OSC
C
OSC
t
øL
t
øH
t
ds
t
dh
t
cp
t
cs
t
ch
t
c
V
DD
V
FL
DI, CL, CE, BLK
OSCI
DI, CL, CE, BLK, OSCI
OSCI, OSCO
OSCI, OSCO
OSCI, OSCO
CL
CL
DI, CL
DI, CL
CE, CL
CE, CL
CE, CL
BLK, CE
Figure 1
Figure 1
Figure 1
Figure 1
Figure 1
Figure 1
Figure 1
Figure 3
Conditions
Ratings
min
4.5
V
DD
– 45
0.8 V
DD
0.8 V
DD
0
1.8
1.0
10
0.5
0.5
0.5
0.5
0.5
0.5
0.5
10
3.7
5.6
22
typ
5.0
max
5.5
V
DD
5.5
V
DD
0.2 V
DD
4.9
22
47
V
V
MHz
kΩ
pF
µs
µs
µs
µs
µs
µs
µs
µs
V
Unit
Supply voltage
Input high-level voltage
Input low-level voltage
Guaranteed oscillator range
Recommended external resistance
Recommended external capacitance
Low level clock pulse width
High level clock pulse width
Data setup time
Data hold time
CE wait time
CE setup time
CE hold time
BLK switching time
Electrical Characteristics
in the Allowable Operating Ranges
Parameter
Symbol
I
IH1
I
IH2
I
IL
V
OH1
Output high-level voltage
V
OH2
V
OH3
Output low-level voltage
Output off voltage
Pull-down resistors
Oscillator frequency
Hysteresis voltage
Current drain
V
OL
V
OFF
R
PD
f
OSC
V
H
I
DD
Conditions
DI, CL, CE, BLK: V
I
= 5.5 V
OSCI:V
I
= V
DD
DI, CL, CE, BLK: V
I
= 0 V
S1 to S43: I
O
= 5 mA
G1 to G11: I
O
= 20 mA
OSCO: I
O
= 0.5 mA
OSCO: I
O
= –0.5 mA
S1 to S43, G1 to G11: V
FL
= V
DD
– 45 V,
Outputs off
S1 to S43, G1 to G11: V
FL
= V
DD
– 45 V,
V
O
= V
DD
OSCI, OSCO: R
OSC
= 5.6 kΩ, C
OSC
= 22 pF
DI, CL, CE, BLK
V
DD
: Outputs open. Display off,
f
OSC
= 3.7 MHz, V
FL
= V
DD
– 45 V
50
100
3.7
0.1 V
DD
5
–5
V
DD
– 2.0
V
DD
– 2.0
V
DD
– 2.0
2.0
V
DD
– 44
200
V
V
kΩ
MHz
V
mA
V
Ratings
min
typ
max
5
5
µA
µA
Unit
Input high-level current
Input low-level current
Package Dimensions
unit: mm
3159A-QIP64E
[LC75725E]
17.2
14.0
48
49
33
32
14.0
64
1
0.8
(1.0)
0.35
16
17
17.2
0.15
SANYO: QIP64E(14
×
14)
No. 5606-2/14
0.8
LC75725E
Block Diagram
Pin Functions
Pin
V
FL
V
DD
V
SS
OSCI
OSCO
Pin No.
1, 13
60
57
59
58
Function
Driver block power supply connection. (Both pins must be connected.)
Logic block power supply connection. Provide a voltage between 4.5 and 5.5 V.
Power supply connection. Connect to the ground.
Oscillator connection. An oscillator circuit is formed by connecting an external resistor
and capacitor to these pins.
Display off control input.
BLK = Low (V
SS
) ... Display off. (S1 to S43 and G1 to G11 at V
FL
level.)
BLK = High (V
DD
) ... Display on.
Note that serial data can be transferred while the display is turned off.
Serial data transfer inputs. These pins must be connected to the system microcontroller.
CL: Synchronization clock
DI: Transfer data
CE: Chip enable
Digit outputs. These pins are P-channel open drain outputs with pull-down resistors.
Segment outputs for displaying the display data transferred by serial data input. These pins
are P-channel open drain outputs with pull-down resistors.
I/O
—
—
—
I
O
Handling when unused
—
—
—
GND
OPEN
BLK
61
I
GND
CL
DI
CE
G1 to G11
S1 to S43
63
64
62
2 to 12
56 to 14
I
GND
O
O
OPEN
OPEN
No. 5606-4/14
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