MAX7219 LED Display Driver DIP-24
SPI-controlled 8-digit 7-segment LED display driver (or 64-LED matrix driver) in DIP-24 package. KiCad package CAD included; 3D model represents package envelope only.
SPI-controlled 8-digit 7-segment LED display driver (or 64-LED matrix driver) in DIP-24 package. KiCad package CAD included; 3D model represents package envelope only.
Serial data input to internal 16-bit shift register
Digit 0 common-cathode current-sink output
Digit 4 common-cathode current-sink output
Ground, must be connected
Digit 6 common-cathode current-sink output
Digit 2 common-cathode current-sink output
Digit 3 common-cathode current-sink output
Digit 7 common-cathode current-sink output
Ground, must be connected
Digit 5 common-cathode current-sink output
Digit 1 common-cathode current-sink output
MAX7219 LOAD input, latches last 16 serial bits on rising edge; MAX7221 CS equivalent
Serial clock input, shifts data into DIN on rising edge
Segment A current-source drive output
Segment F current-source drive output
Segment B current-source drive output
Segment G current-source drive output
Connect to V+ through RSET to set peak segment current
Positive supply voltage
Segment C current-source drive output
Segment E current-source drive output
Decimal-point segment current-source drive output
Segment D current-source drive output
Serial data output for daisy-chaining, DIN data delayed 16.5 clock cycles
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| DIN | DIP-24 top view, left side pin 1 | GPIO | Serial data input to internal 16-bit shift register | |
| DIG 0 | DIP-24 top view, left side pin 2 | Unknown | Digit 0 common-cathode current-sink output | |
| DIG 4 | DIP-24 top view, left side pin 3 | Unknown | Digit 4 common-cathode current-sink output | |
| GND | DIP-24 top view, left side pin 4 | Ground | Ground, must be connected | 0V |
| DIG 6 | DIP-24 top view, left side pin 5 | Unknown | Digit 6 common-cathode current-sink output | |
| DIG 2 | DIP-24 top view, left side pin 6 | Unknown | Digit 2 common-cathode current-sink output | |
| DIG 3 | DIP-24 top view, left side pin 7 | Unknown | Digit 3 common-cathode current-sink output | |
| DIG 7 | DIP-24 top view, left side pin 8 | Unknown | Digit 7 common-cathode current-sink output | |
| GND | DIP-24 top view, left side pin 9 | Ground | Ground, must be connected | 0V |
| DIG 5 | DIP-24 top view, left side pin 10 | Unknown | Digit 5 common-cathode current-sink output | |
| DIG 1 | DIP-24 top view, left side pin 11 | Unknown | Digit 1 common-cathode current-sink output | |
| LOADCS | DIP-24 top view, left side pin 12 | GPIO, SPI | MAX7219 LOAD input, latches last 16 serial bits on rising edge; MAX7221 CS equivalent | |
| CLK | DIP-24 top view, right side pin 13 | GPIO | Serial clock input, shifts data into DIN on rising edge | |
| SEG A | DIP-24 top view, right side pin 14 | Unknown | Segment A current-source drive output | |
| SEG F | DIP-24 top view, right side pin 15 | Unknown | Segment F current-source drive output | |
| SEG B | DIP-24 top view, right side pin 16 | Unknown | Segment B current-source drive output | |
| SEG G | DIP-24 top view, right side pin 17 | Unknown | Segment G current-source drive output | |
| ISET | DIP-24 top view, right side pin 18 | Analog | Connect to V+ through RSET to set peak segment current | |
| V+ | DIP-24 top view, right side pin 19 | Power | Positive supply voltage | +5V |
| SEG C | DIP-24 top view, right side pin 20 | Unknown | Segment C current-source drive output | |
| SEG E | DIP-24 top view, right side pin 21 | Unknown | Segment E current-source drive output | |
| SEG DP | DIP-24 top view, right side pin 22 | Unknown | Decimal-point segment current-source drive output | |
| SEG D | DIP-24 top view, right side pin 23 | Unknown | Segment D current-source drive output | |
| DOUT | DIP-24 top view, right side pin 24 | GPIO | Serial data output for daisy-chaining, DIN data delayed 16.5 clock cycles |
Serial data input to internal 16-bit shift register
Digit 0 common-cathode current-sink output
Digit 4 common-cathode current-sink output
Ground, must be connected
Digit 6 common-cathode current-sink output
Digit 2 common-cathode current-sink output
Digit 3 common-cathode current-sink output
Digit 7 common-cathode current-sink output
Ground, must be connected
Digit 5 common-cathode current-sink output
Digit 1 common-cathode current-sink output
MAX7219 LOAD input, latches last 16 serial bits on rising edge; MAX7221 CS equivalent
Serial clock input, shifts data into DIN on rising edge
Segment A current-source drive output
Segment F current-source drive output
Segment B current-source drive output
Segment G current-source drive output
Connect to V+ through RSET to set peak segment current
Positive supply voltage
Segment C current-source drive output
Segment E current-source drive output
Decimal-point segment current-source drive output
Segment D current-source drive output
Serial data output for daisy-chaining, DIN data delayed 16.5 clock cycles
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