NXP Semiconductors
UM11099
PCAL6534 demonstration board OM13541
UM11099
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User manual
Rev. 1.0 — 1 August 2019
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Jumper
Default setting
Comment
J8 (4x2-pin)
1-2 (VDDI)*note1
This 4x2 jumper is used to select input value for ADDR (U1 pin A4)
1-2: select VDDI (address is 0x46 for PCAL6534)
3-4: select VSS (address is 0x44 for PCAL6534)
5-6: select SDA (address is 0x42 for PCAL6534)
7-8: select SCL (address is 0x40 for PCAL6534)
J9 (3-pin)
1-2 (SCL = SCL1)
This jumper is used to select SCL source for U1 device (pin A3)
1-2: select SCL1 (bus 1 from Fm+ development board)
2-3: select SCL2 (bus 2 from Fm+ development board)
J10 (3-pin)
1-2 (SDA = SDA1)
This jumper is used to select SDA source for U1 device (pin A2)
1-2: select SDA1 (bus 1 from Fm+ development board)
2-3: select SDA2 (bus 2 from Fm+ development board)
J11 (18-pin)
Connect Fm+
development board
This 18-pin female connect to PORT A/B/C/D (14-pin male) on Fm+
development board (OM13260) for power supply, I2C-bus and control
signals to test
J12-J16 (10-pin)
Connect to GPIO
Target board
This 10-pin male connect to GPIO target board (OM13303) for input/
output pins test
J17 (3-pin)
2-3 (P2_0)
This jumper is used to select function either P2_0 or EXT_OSC for U1
device (pin E3)
1-2: select external oscillator (EXT_OSC) input for debounce circuit use
2-3: select P2_0 input as normal operation
1. Default PCAL6534 slave address is set to 0x46 (ADDR = VDD)
Figure 2. PCAL6534 demo board (OM13541)