Elatec TWN4 MultiTech 3 BLE, Техническое руководство

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2 TWN4 MultiTech 3 BLE PCB
Pin Pin Name Function
1 CAN_TX TTL TX pin of CAN interface. An external interface circuit is required.
2 CAN_RX TTL RX pin of CAN interface. An external interface circuit is required.
3 I2C_SCL Clock pin of I2C interface. No internal pull up.
4 I2C_SDA Data pin of I2C interface. No internal pull up.
5 SPI_MOSI Pin MOSI of SPI interface
6 SPI_MISO Pin MISO of SPI interface
7 SPI_SS- Pin SS- of SPI interface
8 SPI_SCK Pin SCK of SPI interface
9 V24_TXD RS232 TXD (Output)
10 HOSTSENSE Host channel selector: Low (connect to GND) = COM1 (no USB enumeration);
high (connect to VCC) = USB. This pin is internally pulled high.
11 V24_RXD RS232 RXD (Input)
12 GND Ground
13 UVCC USB VCC (5V)
14 USB_DM_P USB Data -
15 UGND USB Ground
16 USB_DP_P USB Data +
17 COM1_TX Low active TTL output (push/pull) of asynchronous TXD from COM1.
18 COM1_RX Low active TTL input with internal pull-up resistor of asynchronous RXD to
COM1.
19 VCC Direct access to 3.3V supply net after Regulator. Microcontroller and majority of
circuitry is powered by this.
20 GPIO4 I/O pin for general purposes.
21 GPIO5 I/O pin for general purposes.
22 GPIO6 I/O pin for general purposes.
23 PWRDWN- Low active TTL input with internal pull-up resistor for turning off the voltage reg-
ulator.
24 RESET- Low active TTL input with internal pull-up resistor for hard reset.
Table 2.2: Generic Interface (X2) Pin Configuration
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