I2C-9555

Fork project on GitHub

I2C PCF8474-based IO Expander with 4x IO4 connections

 

 

I2C-9555 Version 3.0

First built: 2014-04, 2014-07, 2014-08

Not tested or validated

A compliment to the [I2C-8574-IO] dual 8-bit board, the 9555 offers a 16 bit data path (2x 8-bit ports, port0 and port1) This board is slightly cheaper to build (1x 9555 chip -vs- 2x 8574 chips…), but slightly harder to use (unpacking 16 bit words into byte size chunks) This board was not updated to use IOB daughtercards…

Schematic
Schematic
Bot Silk
Bot Silk
Board
Board
Top Silk
Top Silk

Download I2C-9555.gerbers.zip - Gerber Fabrication files
Download I2C-9555.parts - Parts List (spreadsheet data)

 

I2C-9555.bom

Parts Value Package Quantity Library Type/Feeder
C1 0.1uf 0805-CAP 1x SPCoast NONE
C3, C4 1uF 0805-CAP 2x SPCoast NONE
R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R17, R18, R22, R23 2k2 0805-RES 20x SPCoast 42
POWER 9-12Vdc PWR_LABEL 1x SPCoast PTH
R16, R19, R20 10K 0805-RES 3x SPCoast 46
C5 150uF 0810-CAP 1x SPCoast NONE
J10   DCJ0202 1x SPCoast PTH
SW1   EDG-04 1x SPCoast PTH
J1, J2   I2C-L 2x SPCoast PTH
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15   SOT23-3 16x SPCoast NONE
BOARD1 BOARD80X100-IOB BOARD-DINRAIL-3.17IN-IOB 1x SPCoast PTH
VR1 CJ78M05-1300040P1 TO252 1x OPL NONE
U$2, U$3, U$4, U$5 CONNECTOR-IO4-IOBBARE IO4-IOB 4x SPCoast PTH
VIN1 CONNECTOR-POWER-L POWER-R2 1x SPCoast PTH
VIN2 CONNECTOR-POWER-R POWER-R 1x SPCoast PTH
FID1, FID2 FIDUCIAL FIDUCIAL_1MM 2x SPCoast NONE
LED17, LED18 G 0603-LED 2x SPCoast 3
U$1 OSHW-LOGOL OSHW-LOGO-L 1x SparkFun PTH
IC1 PCA9555D SO24 1x micro-philips NONE
SDA SCL 1X02_LOCK 1x SPCoast PTH
SCL SDA 1X02_LOCK 1x SPCoast PTH
LED0, LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15 Y-0330050P1 0603-LED 16x SPCoast NONE

I2C-9555 Version 2.2

First built: 2014-04, 2014-07, 2014-08

A compliment to the [I2C-8574-IO] dual 8-bit board, the 9555 offers a 16 bit data path (2x 8-bit ports, port0 and port1) This board is slightly cheaper to build (1x 9555 chip -vs- 2x 8574 chips…), but slightly harder to use (unpacking 16 bit words into byte size chunks) This board was not updated to use IOB daughtercards…

Schematic
Schematic
Bot Silk
Bot Silk
Board
Board
Top Silk
Top Silk

Download I2C-9555 - CHMT Component and feeder definitions
Download I2C-9555.gerbers.zip - Gerber Fabrication files
Download I2C-9555.parts - Parts List (spreadsheet data)

 

I2C-9555.bom

Parts Value Package Quantity Library Type/Feeder
C1 0.1uf 0805-CAP 1x SPCoast NONE
C3, C4 1uF 0805-CAP 2x SPCoast NONE
R0, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R17, R18, R22, R23 2k2 0805-RES 20x SPCoast 7
POWER 9-12Vdc POWER_USAGE 1x SPCoast PTH
C5 150uF UD-8X10_NICHICON 1x rcl NONE
A1, A2, A3   1X03_LOCK 3x SparkFun-Connectors PTH
JP1, JP4, JP5, JP6   1X06_LOCK 4x SparkFun-Connectors PTH
J6, J7, J9, J11   RJ11-NO_SHIELD 4x SPCoast PTH
VR1 CJ78M05-1300040P1 TO252 1x OPL NONE
J10 DCJ0202-RA DCJ0202 1x SPCoast PTH
LED17, LED18 G - 0330010P1 0603-LED 2x SPCoast NONE
J5, J8 GROVE-4P-2.0-3470130P1 4P-2.0 2x OPL PTH
J1, J2 I2CRA I2C 2x SPCoast PTH
Q0, Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q14, Q15 MOSFET-P-044021001 SOT23 16x OPL NONE
U$1 OSHW-LOGOL OSHW-LOGO-L 1x SparkFun PTH
IC1 PCA9555D SO24 1x micro-philips NONE
SDA SCL 1X02_LOCK 1x SPCoast PTH
SCL SDA 1X02_LOCK 1x SPCoast PTH
LED0, LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15 Y-0330050P1 0603-LED 16x SPCoast NONE

This technical documentation is licensed under the CERN Open Hardware Licence v1.2

Tags: eagle