20T202DA1J Datasheet PDF - Samsung

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20T202DA1J
Samsung

Part Number 20T202DA1J
Description VFD Module
Page 18 Pages


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DISPLAY DEVICES
20T202DA1J (Tentative)
Page - 1 / 18
VACUUM FLUORESCENT DISPLAY MODULE
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DISPLAY DEVICES
1. SCOPE
20T202DA1J (Tentative)
Page - 2 / 18
This specification applies to VFD module (Model No: 20T202DA1J) manufactured by Samsung Display Devices.
2. FEATURES
2.1 LCD compatible interface and mounting holes.
(This VFD module is capable to communicate some different type of bus systems such as i80 (Intel) or
M68 (Motorola), 8-bit or 4-bit parallel data.)
2.2 High quality of display and luminance.
2.3 Compact and light-weight unit by using new VFD technology and flat packed one-chip controller.
2.4 +5V single power supply.
2.5 Luminance adjustment available by software (4 levels).
2.6 8 user definable fonts available (CG-RAM font).
2.7 ASCII and Jananese Katakana characters (CG-ROM font).
3. GENERAL DESCRIPTIONS
3.1 This specification becomes effective after being approved by the purchaser.
3.2 When any conflict is found in the specification, appropriate action shall be taken upon agreement of both
parties.
3.3 The expected necessary service parts should be arranged by the customer before the completion of
production.
4. PRODUCT SPECIFICATIONS
4.1 Type
Type
Digit Format
Table_1
20T202DA1J
5¡¿7 Dot Matrix with Cursor
4.2 Outer Dimensions, Weight (See Fig_7 on Page 6/18 for details)
Parameter
Outer
Dimensions
Width
Height
Thickness
Weight
Specification
116.0¡¾1.0
37.0¡¾1.0
15.0 Max
Typical 100
Table_2
Unit
mm
mm
mm
g
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DISPLAY DEVICES
20T202DA1J (Tentative)
Page - 3 / 18
4.3 Specifications of the Display Panel
Parameter
Symbol
Display Size
WxH
Number of Digit
-
Character Size (excluding cursor)
WxH
Character Pitch
-
Dot Size
WxH
Display Color
-
Specification
70.8 x 11.5
20 Digits x 2 Lines
5.3 x 2.4
3.6(H) / 6.1(V)
0.4 x 0.5
Blue-Green (peak 505 §¬)
Table_3
Unit
mm
-
mm
mm
mm
-
4.4 Environment Conditions
Parameter
Operating Temperature
Storage Temperature
Humidity (Operating)
Humidity (Non-operating)
Vibration (10 ¡- 55 §Ô)
Shock
Symbol
Topr
Tstg
Hopr
Hstg
-
-
Min.
-20
-40
0
0
-
-
Max.
+70
+85
85
90
4
40
Table_4
Unit
¡É
¡É
£¥
£¥
£Ç
£Ç
4.5 Absolute Maximum Ratings
Parameter
Supply Voltage
Input Signal Voltage
Symbol
VCC
VIS
Min.
-0.5
-0.5
Max.
6.0
Vcc+0.5
Table_5
Unit
VDC
VDC
4.6 Recommend Operating Conditions
Parameter
Symbol
Supply Voltage
VCC
Signal (Logic) Input Voltage
VIS
Operating Temperature
TOPR
Min.
4.5
0
-20
Table_6
Typ.
Max.
Unit
5.0 5.5 VDC
-
VCC
VDC
+25 +70 ¡É
4.7 DC Characteristics (Ta=+25¡É, Vcc=+5.0Vdc)
Table_7
Parameter
Supply Current ¡Ø)
Logic Input Voltage
"H" Level
"L" Level
Symbol
ICC
VIH
VIL
Min.
-
0.7¡¿VCC
-
Typ.
150
-
-
Max.
220
-
0.3¡¿VCC
Unit
mA
VDC
VDC
"H" level Input current VIN=VCC
IIH 20
- 500 uA
Luminance
£Ì 100
200
(340)
(680)
ft-L
-
(cd/m2)
¡Ø) Icc shows the current when all dots are turned on. The surge current can be approx. 3 times
the specified supply current at power on. However, the exact peak surge current amplitude and
duration are dependent on the characteristics of the host power supply.
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DISPLAY DEVICES
20T202DA1J (Tentative)
4.8 Timing Chart and AC Characteristics
4.8.1 Power-on Reset and/or RESET signal Timing
Vcc
tOFF(VCC)
Min 100ms
0.2V
tr(VCC)
Max 1ms
4.5V
t ¡Ø
W A IT
Min 100us
Page - 4 / 18
/WR
/RST
tR E SET
Min 500ns
¡ØNote) tWAIT - Internal Reseting Time
Fig-1 Power-on Reset and /RESET signal Timing
4.8.2 i80 type CPU bus write-in Timing
RS
/WR
tSU(RS)
Min 10ns
DB0¡-DB7
tCYC(/WR)
Min 166ns
tH(RS)
Min 10ns
tWL(/WR)
Min 30ns
tSU(data)
Min 30ns
VALID
tWH(/WR)
Min 100ns
tHW(data)
Min 10ns
Fig-2 Data write-in Timing Diagram (i80 bus interface)
4.8.3 i80 type CPU bus read-out Timing
RS
/RD
tSU(RS)
Min 10ns
DB0¡-DB7
tCYC(/RD)
Min 166ns
tH(RS)
Min 10ns
tWL(/RD)
Min 70ns
tACESS(data)
Max 70ns
VALID
tWH(/RD)
Min 70ns
tHR(data)
Min 5ns
Fig-3 Data Read-out Timing Diagram (i80 bus interface)
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