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PDF M204SD02FJ Data sheet ( Hoja de datos )
| Número de pieza | M204SD02FJ | |
| Descripción | CHARACTER DISPLAY MODULE | |
| Fabricantes | Futaba | |
| Logotipo |  |
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AN-E-2311A
APPLICATION NOTE
VACUUM FLUORESCENT DISPLAY MODULE
CHARACTER DISPLAY MODULE
M204SD02FJ
GENERAL DESCRIPTION
Futaba Vacuum Fluorescent Display Module M204SD02FJ, with
Futaba VFD 204-SD-02GN display, produces 20 digits×4rows with 5×8
dot matrix.
Consisting of a VFD, one chip controller, DC-DC/AC converter, the
module can be operated by a parallel interface or a synchronous serial
interface, and only 5 voltage power source is required to operate the
module.
㩷
Free Datasheet http://www.Datasheet4U.com
1 page  
2-3. ABSOLUTE MAXIMUM SPECIFICATIONS
Item Symbol
Supply Voltage
Vcc
Input signal Voltage VIN
Min.
-0.3
-0.3
Max.
6.5
Vcc+0.3
Table-3
Unit
V
V
2-4. DC ELECTRICAL SPECIFICATIONS
Table-4
Item Symbol Min. Typ. Max. Unit
Supply Voltage
Vcc 4.5 5.0 5.5 V
Supply Current
Icc −
300 400 mA
Power Consumption
− − 1.5 2.2 W
High - Level Input Voltage
VIH 0.7Vcc
−
Vcc V
Low - Level Input Voltage
VIL 0
− 0.2Vcc V
High - Level Output Voltage
(IOH = -0.1mA)
Low - Level Output Voltage
(IOL = 0.1mA)
VOH Vcc-0.5
VOL −
−
−
−V
0.5 V
Input Current
II -500
−
1.0 µA
2-5. AC ELECTRICAL SPECIFICATIONS
2-5-1. MOTOROLA M68-TYPE PARALLEL INTERFACE TIMING
(See Fig. 1 and 2)
Item
Symbol Min.
Max.
RS, R/W Setup Time
tAS 20
−
RS, R/W Hold Time
tAH 10
−
Input Signal rise Time
tr − 15
Input Signal Fall Time
tf − 15
Enable Pulse Width High
PWEH
230
−
Enable Pulse Width Low
PWEL
230
−
Write Data Setup Time
tDS 80
−
Write Data Hold Time
tDH 10
−
Enable Cycle Time
tCYCLE
500
−
Read Data Delay Time
tDD − 160
Read Data Hold Time
tDHR
5
−
Note: All timing is specified using 20% and 80% of Vcc as the reference points.
Table-5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AN-E-2311A [2/19]
Free Datasheet http://www.Datasheet4U.com
5 Page 
3-1-2. INTEL I80-TYPE MODE
This mode uses the Read (RD/) and Write (WR/) control signals to transfer information.
Instructions/data are written to the module on the rising edge of WR/ and are read from
the module after the falling edge of RD/.
RS
WR/
RD/
DB7
DB6
IB7
IB6
IB7 BF=“0” DB7
IB6 IB6 DB6
DB0
IB0
Write Instruction
IB0
Write Instruction
IB0
Read Instruction
DB0
Write Data
Fig. 9. Typical 8-Bit Parallel Interface Sequence Using I80-Type Mode
3-2. SYNCHRONOUS SERIAL INTERFACE MODE
In the synchronous serial interface mode, instructions and data are sent between the host
and the module using 8-bit bytes. Two bytes are required per read/write cycle and are
transmitted MSB first. The start byte contains 5 high bits, the Read/Write (R/W) control bit,
the Register Select (RS) control bit, and a low bit. The following byte contains the
instruction/data bits. The R/W bit determines whether the cycle is a read (high) or a write
(low) cycle. The RS bit is used to identify the second byte as an instruction (low) or data
(high).
This mode uses the Strobe (STB) control signal, Serial Clock (SCK) input, and Serial I/O
(SI/SO) line to transfer information. In a write cycle, bits are clocked into the module on
the rising edge of SCK. In a read cycle, bits in the start byte are clocked into the module on
the rising edge of SCK. After the minimum wait time, each bit in the instruction/data byte
can be read from the module after each falling edge of SCK. Each read/write cycle begins
on the falling edge of STB and ends on the rising edge. To be a valid read/write cycle, the
STB must go high at the end of the cycle.
AN-E-2311A [8/19]
Free Datasheet http://www.Datasheet4U.com
11 Page | ||
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