Difference between revisions of "DIGIO-128 Rev X4 Assembly Sheet"

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| 2 (3)
 
| 2 (3)
 
| 10K (1/4W)
 
| 10K (1/4W)
| R1,R2,
+
| R1,R2
 
  R6 (option - below)
 
  R6 (option - below)
 
|  
 
|  

Revision as of 12:54, 12 February 2021

DIGIO-128-AssySheet-X4.PNG

Parts List

Qty Value RefDes Qty Value RefDes
8 0.1uF Cap C1,C2,C3,C4,C5,C6,C7,C8 1 CONN, 2X03 J4
1 (option) 0 R7 (option - below) 2 CONN, 1x4 J2,J3
2 (3) 10K (1/4W) R1,R2
R6 (option - below)
1 CONN, 1x5 J1
1 1K (1/4W) R5 8 CONN, 2x10 P1,P2,P3,P4,P6,P7,P8,P9
2 2.2K (1/4W) R3,R4 2 CONN, 2X2 P10,P5
1 24LC024-I/P U9
8 MCP23017P U1,U2,U3,U4,U5,U6,U7,U8

R6/R7 Option

  • R6, R7 provide pull-up or pull-down for I2C address A2 line

128-bit option

  • Leave R7 open (no resistor)
  • Install jumper wire into R6

64-bit option

  • Typical - for I2C address = 0x20-0x23 leave R7 open, install jumper wire into R7
  • For I2C address = 0x24-0x27 leave R7 open, install 10K resistor in R6