NXP Semiconductors PCA9955BTW-ARD, Руководство пользователя, Страница: 9 / 38

NXP Semiconductors
UM11761
PCA9955BTW-ARD evaluation board
the corresponding lines of white LEDs D9 and D10 can be redirected with J82 and J83
jumpers to white LED external connectors J23 and J25.
4.5 Arduino port
J5, J6, J35, and J36 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 lists the pin chart of connectors, and the lines used in the circuit (see also the
SPF-46660_A1.pdf schematic file):
Ref Des # Arduino label PCA9955BTW-ARD function
1 NC Not used
2 IOREF Not used
3 RESET Not used
4 3.3V Not used
5 5V Power supply
6 GND Power supply return
7 GND Power supply return
J6 (Power)
8 Vin Not used
1 A0 Not used
2 A1 Not used
3 A2 Not used
4 A3 Not used
5 A4 / SDA I
2
C – SDA
J35 (analog, digital, I
2
C)
6 A5 / SCL I
2
C – SCL
1 D0 / RX Not used
2 D1 / TX Not used
3 D2 Not used
4 D3 / PWM Not used
5 D4 Not used
6 D5 / PWM Not used
7 D6 / PWM Not used
J5 (digital, UART, PWM)
8 D7 Not used
1 D8 RESET
2 D9 / PWM OE
3 D10 / SS / PWM MUX (REXT)
4 D11 / MOSI / PWM Not used
5 D12 / MISO Not used
J36 (mixed)
6 D13 / SCK Not used
Table 2. The pin chart of Arduino connectors and their usage
UM11761 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 1.0 — 18 March 2022
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