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Important Safety Notice结晶紫
!
Please read this note carefully before using the product.
Warning
•The module should be disconnected from the power supply before handling.
•The power supply should be switched off before connecting or disconnecting the power or interface cables.
•The module contains electronic components that generate high voltages which may cause an electrical shock when touched.
•Do not touch the electronic components of the module with any metal objects.
•The VFD used on the module is made of glass and should be handled with care. When handling the VFD, it is recommended that cotton gloves be used.
•The module is equipped with a circuit protection fuse.
•Under no circumstances should the module be modified or repaired.
Any unauthorized modifications or repairs will invalidate the product warranty.
•The module should be abolished as the factory waste.
CONTENTS PAGE
1. FEATURES −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−1
2. SPECIFICATIONS
2-1. GENERAL SPECIFICATIONS −−−−−−−−−−−−−−−−−−−−−−−−−−−−1 2-2. ENVIRONMENTAL SPECIFICATIONS −−−−−−−−−−−−−−−−−−−−−1 2-3. ABSOLUTE MAXIMUM SPECIFICATIONS −−
−−−−−−−−−−−−−−−−2 2-4. DC ELECTRICAL SPECIFICATIONS −−−−−−−−−−−−−−−−−−−−−−−2 2-5. AC ELECTRICAL SPECIFICATIONS −−−−−−−−−−−−−−−−−−−−−−−2 2-5-1. MOTOROLA M68-TYPE PARALLEL INTERFACE TIMING −−−2 2-5-2. INTEL I80-TYPE PARALLEL INTERFACE TIMING −−−−−−−−−4 2-5-3. SYNCHRONOUS SERIAL INTERFACE TIMING −−−−−−−−−−−−5 2-5-4. RESET TIMING −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−7 3. MODE OF OPERATION
3-1. PARALLEL INTERFACE MODES −−−−−−−−−−−−−−−−−−−−−−−−−7 3-1-1. MOTOROLA M68-TYPE MODE −−−−−−−−−−−−−−−−−−−−−−−−−7 3-1-2. INTEL I80-TYPE MODE −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−8 3-2. SYNCHRONOUS SERIAL INTERFACE MODE −−−−−−−−−−−−−−−8 3-3. RESET MODE −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−9 4. FUNCTIONAL DESCRIPTION
4-1. ADDRESS COUNTER (AC) −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−10 4-2. DISPLAY DATA RAM (DDRAM) −−−−−−−−−−−−−−−−−−−−−−−−−−10 4-3. CHARACTER GENERATOR RAM (CGRAM) −−−−−−−−−−−−−−−−11 4-4. INSTRUCTIONS −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−11 4-4-1. CLEAR DISPLAY −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−12 4-4-2. CURSOR HOME −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−12 4-4-3. ENTRY MODE SET −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−12 4-4-4. DISPLAY ON/OFF CONTROL −−−−−−−−−−−−−
−−−−−−−−−−−−−13 4-4-5. CURSOR/DISPLAY SHIFT −−−−−−−−−−−−−−−−−−−−−−−−−−−−−13 4-4-6. FUNCTION SET −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−14 4-4-7. CGRAM ADDRESS SET −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−14 4-4-8. DDRAM ADDRESS SET −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−14 4-4-9. ADDRESS COUNTER READ −−−−−−−−−−−−−−−−−−−−−−−−−−−14 4-4-10. DDRAM OR CGRAM WRITE −−−−−−−−−−−−−−−−−−−−−−−−−−15 4-4-11. DDRAM OR CGRAM READ −−−−−−−−−−−−−−−−−−−−−−−−−−−15 4-5. RESET CONDITIONS −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−15
5. CONNECTOR INTERFACE −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−16
6. JUMPER SETTING −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−16
7. CIRCUIT BLOCK DIAGRAM −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−16 FIGURE-1 MECHANICAL DRAWING −−−−−−−−−−−−−−−−−−−−−−−−−17 FIGURE-2 CHARACTER FONT TABLE −−−−−−−−−−−−−−−−−−−−−−−−18
8. WARRANTY −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−19
9. OPERATING RECOMMENDATION −−−−−−−−−−−−−−−−−−−−−−−−−−19
1.FEATURE
This vacuum fluorescent display (VFD) module consists of a 20 character by 2 line 5×8 dot matrix display, DC-DC/AC converter, and controller/driver circuitry.
The module can be configured for a Motorola M68-type parallel interface, an Intel I80-type parallel interface, or a synchronous serial interface.
A character generator ROM with 240 5×8 characters is provided along with RAM for the user
to program an additional 8 characters. The luminance level of the VFD can be varied by setting two bits in the function set instruction.
Two hundred and forty character fonts consisting of a alphabets, numerals and other symbols can be displayed.
This module has a dual-port RAM that allows data and instructions to be the module continuously. Thus, the busy flag is always 0 and the host never has to read the busy flag bit to determine if the module is busy.
Due to this feature, the execution times for each instruction are not specified.
2 SPECIFICATIONS
2-1.GENERAL SPECIFICATIONS
Table-1
Item Value
Number of characters20 characters × 2 lines
Character configuration5×8 dot matrix
Character Height 5.34 mm
Character Width 2.35 mm
Character Pitch 3.60 mm
Line Pitch 6.16 mm
Dot Size0.39 × 0.58 mm
Dot Pitch0.49 × 0.68 mm
Peak Wavelength of
Illumination
Green (λp=505nm) x=0.235, y=0.405
Luminance
Minimum
350 cd/m2, 102 fL
Typical
500 cd/m2, 146 fL
2-2.ENVIRONMENTAL SPECIFICATIONS
Table-2 Item Symbol Min.Max.Unit Comment Operating Temperature T opr-40+85°C
Storage Temperature T stg-40+85°C
Operating Humidity H opr2085%RH Without condensation
Storage Humidity H stg2090%RH Without condensation
Vibration−−4G Total amplitude: 1.5mm Freq: 10-55 Hz sine wave Sweep time: 1 min./cycle Duration: 2hrs./axis (X,Y,Z)
Shock−−40G Duration: 11ms
Wave form: half sine wave
3 times/axis (X,Y,Z,-X,-Y,-Z)
2-3.ABSOLUTE MAXIMUM SPECIFICATIONS
Table-3
Item Symbol Min.Max.Unit
Supply Voltage V cc-0.3 6.5V
Input signal Voltage V IN-0.3V cc+0.3V
逸仙论坛2-4.DC ELECTRICAL SPECIFICATIONS Table-4
Item Symbol Min.Typ.Max.Unit第十二届国家
机构领导人 Supply Voltage V cc 4.5 5.0 5.5V Supply Current I cc−140190mA Power Consumption−−0.7 1.045W High - Level Input Voltage(see Note)V IH0.7*V cc−V cc V Low - Level Input Voltage V IL0−0.2* V cc V High - Level Output Voltage
V OH V cc-0.5−−V (I OH = -0.1mA)
Low - Level Output Voltage
V OL−−0.5V (I OL = 0.1mA)
Input Current (see Note)I I-500− 1.0µA Note: A 10K ohm pull-up resistor is provided on each input line.
2-5.AC ELECTRICAL SPECIFICATIONS
2-5-1.MOTOROLA M68-TYPE PARALLEL INTERFACE TIMING
(See Fig. 1 and 2)
Table-5
Item Symbol Min.Max.Unit RS, R/W Setup Time t AS20−ns
廉洁修身论文RS, R/W Hold Time t AH10−ns
Input Signal rise Time t r−15ns
Input Signal Fall Time t f−15ns
Enable Pulse Width High PW EH230−ns
Enable Pulse Width Low PW EL230−ns
Write Data Setup Time t DS80−ns
美国爱车宝
Write Data Hold Time t DH10−ns Enable Cycle Time t CYCLE500−ns
Read Data Delay Time t DD−160ns
Read Data Hold Time t DHR5−ns
Note:All timing is specified using 20% and 80% of V cc as the reference points.
PAGE: 2/19
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