The MAX7219/MAX7221 are compact, serial input/output common-cathode display drivers that interface microprocessors (?Ps) 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 codeB decoding or no-decode for each digit. The devices include a 150?A low-power shutdown mode, analog and digital brightness control, a scanlimit 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
150?A 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
Related Document:-
MAX7219 IC Data Sheet
* Product Images are shown for illustrative purposes only and may differ from actual product.
