MAX7219 LED Display Driver DIP-24
Pinout
- DINDIP-24 top view, left side pin 1
Serial data input to internal 16-bit shift register
Type · GPIO - DIG 0DIP-24 top view, left side pin 2
Digit 0 common-cathode current-sink output
Type · Unknown - DIG 4DIP-24 top view, left side pin 3
Digit 4 common-cathode current-sink output
Type · Unknown - GNDDIP-24 top view, left side pin 4
Ground, must be connected
Type · GroundVoltage · 0V - DIG 6DIP-24 top view, left side pin 5
Digit 6 common-cathode current-sink output
Type · Unknown - DIG 2DIP-24 top view, left side pin 6
Digit 2 common-cathode current-sink output
Type · Unknown - DIG 3DIP-24 top view, left side pin 7
Digit 3 common-cathode current-sink output
Type · Unknown - DIG 7DIP-24 top view, left side pin 8
Digit 7 common-cathode current-sink output
Type · Unknown - GNDDIP-24 top view, left side pin 9
Ground, must be connected
Type · GroundVoltage · 0V - DIG 5DIP-24 top view, left side pin 10
Digit 5 common-cathode current-sink output
Type · Unknown - DIG 1DIP-24 top view, left side pin 11
Digit 1 common-cathode current-sink output
Type · Unknown - LOADCSDIP-24 top view, left side pin 12
MAX7219 LOAD input, latches last 16 serial bits on rising edge; MAX7221 CS equivalent
Type · GPIO, SPI - CLKDIP-24 top view, right side pin 13
Serial clock input, shifts data into DIN on rising edge
Type · GPIO - SEG ADIP-24 top view, right side pin 14
Segment A current-source drive output
Type · Unknown - SEG FDIP-24 top view, right side pin 15
Segment F current-source drive output
Type · Unknown - SEG BDIP-24 top view, right side pin 16
Segment B current-source drive output
Type · Unknown - SEG GDIP-24 top view, right side pin 17
Segment G current-source drive output
Type · Unknown - ISETDIP-24 top view, right side pin 18
Connect to V+ through RSET to set peak segment current
Type · Analog - V+DIP-24 top view, right side pin 19
Positive supply voltage
Type · PowerVoltage · +5V - SEG CDIP-24 top view, right side pin 20
Segment C current-source drive output
Type · Unknown - SEG EDIP-24 top view, right side pin 21
Segment E current-source drive output
Type · Unknown - SEG DPDIP-24 top view, right side pin 22
Decimal-point segment current-source drive output
Type · Unknown - SEG DDIP-24 top view, right side pin 23
Segment D current-source drive output
Type · Unknown - DOUTDIP-24 top view, right side pin 24
Serial data output for daisy-chaining, DIN data delayed 16.5 clock cycles
Type · GPIO
| 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 |
Pin details
24 connections- DINDIP-24 top view, left side pin 1
Serial data input to internal 16-bit shift register
GPIO - DIG 0DIP-24 top view, left side pin 2
Digit 0 common-cathode current-sink output
Unknown - DIG 4DIP-24 top view, left side pin 3
Digit 4 common-cathode current-sink output
Unknown - GNDDIP-24 top view, left side pin 4
Ground, must be connected
GroundVoltage · 0V - DIG 6DIP-24 top view, left side pin 5
Digit 6 common-cathode current-sink output
Unknown - DIG 2DIP-24 top view, left side pin 6
Digit 2 common-cathode current-sink output
Unknown - DIG 3DIP-24 top view, left side pin 7
Digit 3 common-cathode current-sink output
Unknown - DIG 7DIP-24 top view, left side pin 8
Digit 7 common-cathode current-sink output
Unknown - GNDDIP-24 top view, left side pin 9
Ground, must be connected
GroundVoltage · 0V - DIG 5DIP-24 top view, left side pin 10
Digit 5 common-cathode current-sink output
Unknown - DIG 1DIP-24 top view, left side pin 11
Digit 1 common-cathode current-sink output
Unknown - LOADCSDIP-24 top view, left side pin 12
MAX7219 LOAD input, latches last 16 serial bits on rising edge; MAX7221 CS equivalent
GPIO, SPI - CLKDIP-24 top view, right side pin 13
Serial clock input, shifts data into DIN on rising edge
GPIO - SEG ADIP-24 top view, right side pin 14
Segment A current-source drive output
Unknown - SEG FDIP-24 top view, right side pin 15
Segment F current-source drive output
Unknown - SEG BDIP-24 top view, right side pin 16
Segment B current-source drive output
Unknown - SEG GDIP-24 top view, right side pin 17
Segment G current-source drive output
Unknown - ISETDIP-24 top view, right side pin 18
Connect to V+ through RSET to set peak segment current
Analog - V+DIP-24 top view, right side pin 19
Positive supply voltage
PowerVoltage · +5V - SEG CDIP-24 top view, right side pin 20
Segment C current-source drive output
Unknown - SEG EDIP-24 top view, right side pin 21
Segment E current-source drive output
Unknown - SEG DPDIP-24 top view, right side pin 22
Decimal-point segment current-source drive output
Unknown - SEG DDIP-24 top view, right side pin 23
Segment D current-source drive output
Unknown - DOUTDIP-24 top view, right side pin 24
Serial data output for daisy-chaining, DIN data delayed 16.5 clock cycles
GPIO
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