Sharp DK-KP85H (serv.man2) Service Manual ▷ View online
DK-KP85PH
5 – 9
IC750 VHiL9208A11-1 : FL DRIVER IC (1/2)
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
13
14
15
16
SEG5
SEG6
SEG7
SEG8
SEG9
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG34
SEG35
COM1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
V
FL
COM16
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
COM15
COM14
COM13
COM12
COM11
COM10
COM9
COM8
COM7
COM6
COM5
COM4
COM3
COM2
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
SEG4
SEG3
SEG2
SEG1
AD1
AD2
P2
P1
V
DD
DA
CP
CS
RESET
OSC1
OSC0
GND
Figure: 5-4
DK-KP85PH
5 – 10
IC750 VHiL9208A11-1 : FL DRIVER IC (2/2)
PIN DESCRIPTION
Pin
QFP /
TQFP
SSOP
Symbol
Type Connects to
Description
1 to 31,
61 to 64
5 to 39
SEG1 to 35 O
Fluorescent
tube anode
electrode
Fluorescent display tube anode electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. I
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. I
OH
> –6 mA
32 to 47 40 to 55 COM1 to 16
O
Fluorescent
tube grid
electrode
Fluorescent display tube grid electrode drive output.
Directly connected to fluorescent display tube and a
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. I
OH
> –30 mA
59, 60
3, 4
AD1, AD2
O
Fluorescent
tube anode
electrode
Fluorescent display tube anode electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. I
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. I
OH
> –15 mA
57, 58
1, 2
P1, P2
O
LED drive
control pins
General port output.
Output of these pins in static operation, so these pins can
drive the LED.
Output of these pins in static operation, so these pins can
drive the LED.
56
64
V
DD
49
57
GND
48
56
V
FL
—
Power supply
V
DD
-GND are power supplies for internal logic.
V
DD
-V
FL
are power supplies for driving fluorescent tubes.
Apply V
FL
after V
DD
is applied.
55
63
DA
I
Microcontroller
Serial data input (positive logic).
Input from LSB.
Input from LSB.
54
62
CP
I
Microcontroller
Shift clock input. Serial data is shifted on the rising edge of
CP when CS pin is “L” level.
53
61
CS
I
Microcontroller
Chip select input.
Serial data transfer is enabled when CS pin is “L” level.
Serial data transfer is enabled when CS pin is “L” level.
Reset input.
“Low” initializes all the functions.
Initial status is as follows.
• Address of each RAM ⋅⋅⋅⋅ address “00”H
• Data of each RAM ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Content is undefined
• Display digit ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 16 digits
• Contrast adjustment ⋅⋅⋅⋅⋅⋅⋅ 0/16
• All lights ON or OFF ⋅⋅⋅⋅⋅⋅⋅ OFF mode
• All outputs ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ “Low” level
• Data of each RAM ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ Content is undefined
• Display digit ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ 16 digits
• Contrast adjustment ⋅⋅⋅⋅⋅⋅⋅ 0/16
• All lights ON or OFF ⋅⋅⋅⋅⋅⋅⋅ OFF mode
• All outputs ⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅⋅ “Low” level
52
60
RESET
I
Microcontroller
or C
2
, R
2
(Circuit when R and C are
connected externally)
See Application Circuit.
connected externally)
See Application Circuit.
50
58
OSC0
I
External RC pin for RC oscillation.
Connect R and C externally. The RC time constant
depends on the V
depends on the V
DD
voltage used. Set the target oscillation
frequency to 2 MHz.
51
59
OSC1
O
C
1
, R
1
(RC oscillation circuit)
See Application Circuit.
RESET
R
2
C
2
OSC0
OSC1
R
1
C
1
DK-KP85PH
5 – 11
IC804 VHiBU33TD3WG1 - 1ch 200mA CMOS LDO Regulators
Lot No.
Mark
Model name: BU
ڧڧTD3WG
Symbol
Contents
Specification of output voltage
a
a
ڧڧ
Output
voltage (V)
ڧڧ
Output
voltage (V)
ڧڧ
Output
voltage (V)
ڧڧ
Output
voltage (V)
10 1.0
V(Typ.) 19 1.9
V(Typ.) 27 2.7
V(Typ.) 31
3.1 V(Typ.)
12 1.2
V(Typ.) 20 2.0
V(Typ.) 28 2.8 V(Typ.)
32
3.2 V(Typ.)
15 1.5
V(Typ.) 21 2.1
V(Typ.) 2J 2.85 V(Typ.)
33
3.3 V(Typ.)
18 1.8
V(Typ.) 25 2.5
V(Typ.) 29 2.9
V(Typ.) 34
3.4 V(Typ.)
1J 1.85 V(Typ.)
26
2.6 V(Typ.)
30
3.0 V(Typ.)
-
-
Recommended ceramic capacitor for Cin & Co
Murata Manufacturing Co., Ltd.
GRM188B11A474KA61D
Murata Manufacturing Co., Ltd.
GRM188B11A474KA61D
BU
ڧڧTD3WG
N.C.
4
1
3
5
2
Cin
VIN
GND
STBY
VSTBY
VOUT
VOUT
Co
VREF
OCP
STBY
Discharge
TSD
VIN
Figure: 5-5
Figure: 5-6
PIN
No.
Symbol
Function
1 VIN
Power
input
2 GND
Grounding
3
STBY
ON/OFF control of output voltage
(High: ON, Low: OFF)
(High: ON, Low: OFF)
4 N.C.
NO
CONNECT
5 VOUT
Voltage output
DK-KP85PH
5 – 12
IC803 VHiUTC1117Y33 : 1A LOW DROPOUT REGULATOR
IC805 VHiTCR2EF13-1 : 200 mA CMOS LOW DROPOUT REGULATOR
1
2
3
Top View
PIN
No.
Symbol
Function
3
1
2
V
IN
GND
V
OUT
Voltage input
Grounding
Voltage output
Figure : 5-7
1
2
3
5
4
Top View
1
V
IN
Voltage input
2
GND
Grounding
3
CONTROL
ON/OFF control of output voltage
(High : ON, Low : OFF)
(High : ON, Low : OFF)
4
NC
No connection
5
V
OUT
Voltage output
PIN
No.
Symbol
Function
Product No.
SMV(SOT-25)
V
OUT
(V)(typ.)
Marking
TCR2EF13
1.3
1N3
Figure : 5-8
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