8 Digit Decoder / Driver LED Module
Product ID: GM-180M
The GM-180M is universal LED display module, all the circuitry necessary to interface most common microprocessors or digit system. Included on module are an 8-byte static display memory, 2 type of 7 segments, multiplex scan circuitry.
- Supply voltage: 6.0V
- Operating temperature: 0 to 70 Celsius (32 to 158 Fahrenheit)
- Storage temperature: -10 to 85 Celsius (14 to 185 Fahrenheit)
- Terminal 1:
- Input: N.C
- Function: No connection
- Terminal 2:
- Input: ID3/mode low
- Voltage: High = logic one, low = logic zero
- Function: Most significant and least significant -4 bit binary data input
- Terminal 3:
- Input: ID2/mode low
- Voltage: High = logic one, low = logic zero
- Function: Most significant and least significant -4 bit binary data input
- Terminal 4:
- Input: ID1/mode low
- Voltage: High = logic one, low = logic zero
- Function: Most significant and least significant -4 bit binary data input
- Terminal 5:
- Input: ID0/mode low
- Voltage: High = logic one, low = logic zero
- Function: Most significant and least significant -4 bit binary data input
- Terminal 6:
- Input: ID4/mode high
- Voltage: High, low
- Function: Normal operation shutdown (oscillator, decoder and displays disabled)
- Terminal 7:
- Input: Mode
- Voltage: High, low
- Function: Load control word on write pulse, load input DATA on write pulse
- Terminal 8:
- Input: WR
- Voltage: High, low
- Function: Input not loaded into memory, Input loaded into memory
- Terminal 9:
- Input: ID7/mode high
- Voltage: High, low
- Function: DATA coming and not DATA coming - control word
- Terminal 10:
- Input: ID5/mode high
- Voltage: High, low
- Function: No decode or decode(reference detail description)
- Terminal 11:
- Input: ID6/mode high
- Voltage: High, low
- Function: Hexadecimal decoding, code B decoding
- Terminal 12:
- Input: V+
- Voltage: N/A
- Function: Positive supply voltage
- Terminal 13:
- Input: GND
- Function: Ground
- Terminal 14-15:
- Input: N.C
- Function: No connection
- Applications: Display for: Microprocessor development systems
- 0.5 inch (12.7mm) digit height
- Single +5V power supply operation
- CMOS TTL compatible inputs
- Direct interfacing to microprocessor and microcomputer
- Cascadable without additional hardware
- The module internal circuit includes:
- Digit and segment drivers
- All multiplex scan circuitry
- 8 x 8 static memory
- 7 segment hexadecimal and code B decoders
| Parameter | Symbol | Min. | Type | Max. | Unit |
|---|---|---|---|---|---|
| Supply voltage | V(dd) | 4.75 | 5.0 | 5.25 | V |
| Supply current | I(dd) | N/A | 150 | 200 | mA |
| Input high voltage | V(ih) | 3.5 | N/A | N/A | V |
| Input low voltage | V(il) | N/A | N/A | 0.8 | V |
| Display scan rate | F(mux) | N/A | 250 | N/A | Hz |
| Write pulse width | T(w) | 550 | 400 | N/A | Ns |
| Mode hold time | T(mh) | N/A | 150 | N/A | Ns |
| Model pulse width | T(m) | 500 | N/A | N/A | V |
| Data set up time | T(ds) | 500 | N/A | N/A | Ns |
| Data hold time | T(dh) | 25 | N/A | N/A | Ns |
| Data input impedance | Z(in) | N/A | 10^(10) | N/A | Ohm |
Main Products:
digital panel meter
