Schematic Diagram; Arduino Port - NXP Semiconductors UM11712 User Manual

NXP Semiconductors
J3
ARDUINO INTERFACE
#3
3.3V
LDO 1
5V
U3
Figure 2. PCAL6534EV-ARD block diagram

4.4 Schematic diagram

4.5 Arduino port

Table 1. The pin chart of Arduino connectors and their usage
Ref Des
J1 (Power)
2
J2 (analog, digital, I
UM11712
User manual
J4
PCAL6534
34 BIT I/O
EXPANDER
P0_0 to P0_7
P1_0 to P1_7
J1 J2
SCL
I2C
SDA
CONTROL BUS
P2_0 to P2_7
1.8V
LDO 2
P3_0 to P3_7
P4_0, P4_1
U4
NXP
U1
The schematic diagram of PCAL6534EV-ARD is available at URL:
PCAL6534EV-ARD.
J1, J2, J3, and J4 are the mated pin headers of Arduino Uno R3 connectors, having
the same electrical function and placed on the board, so that the daughterboard can
be directly inserted in the Arduino port. The daughterboard uses only five signal lines.
Table 1 shows the pin chart of connectors, and the used lines in the circuit (see also the
SPF-46656.pdf schematic file):
# Arduino label
1 NC
2 IOREF
3 RESET
4 3.3V
5 5V
6 GND
7 GND
8 Vin
1 A0
C)
2 A1
All information provided in this document is subject to legal disclaimers.
#6
#16
USER LEDs
D4 D5 D6 D7
USER SW
SW1 SW2 SW3
Not used
Not used
Not used
Not used
Power supply
Power supply return
Power supply return
Not used
Not used
Not used
Rev. 1.0 — 31 January 2022
PCAL6534EV-ARD evaluation board
D13 - D16
MAX V
CPLD
U2
INTEL
#16
D8 D9 D10 D11
#8
#10
SW4 SW5
PCAL6534EV-ARD function
UM11712
16 BIT I/O PORT
J6
8 BIT I/O PORT
J7
10 BIT I/O PORT
J8
aaa-044875
http://www.nxp.com/
© NXP B.V. 2022. All rights reserved.
7 / 31