The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (µPs) to 7-segment numeric LED displays of up to 8 digits, bar-graph displays, or 64 individual LEDs. Included on-chip are a BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8×8 static RAM that stores each digit. Only one external resistor is required to set the segment current for all LEDs. The MAX7219 also allow the user to select code B decoding or no-decode for each digit. The devices include a 150µA low-power shutdown mode, analog and digital brightness control, a scan limit register that allows the user to display from 1 to 8 digits, and a test mode that forces all LEDs on.
Features:-
- 10MHz Serial Interface
- Individual LED Segment Control
- Decode/No-Decode Digit Selection
- 150µA Low-Power Shutdown (Data Retained)
- Digital and Analog Brightness Control
- Display Blanked on Power-Up
- Drive Common-Cathode LED Display
- Slew-Rate Limited Segment Driver
- 24-Pin DIP and SO Packages
Specification:-
| Parameter | Value |
| Voltage (with respect to GND)- V+ | -0.3V to 6V |
| DIN, CLK, LOAD, CS | -0.3V to 6V |
| All Other Pins | -0.3V to (V+ + 0.3V) |
| Current DIG 0–DIG 7 Sink Current | 500mA |
| SEG A–G, DP Source Current. | 100mA |
| Operating Temperature Ranges | 0°C to +70°C |
* product image for illustration purposes only. actual product may vary.
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