cyber
®
reaction wheel 2
Project planning guide
Revision: 02
Doc. no.: 5022-D060586
en-9
2.1.5.1 Pin assignment of connector A
Figure
Pin no.
Signal name
Function
17
GND
Ground reference
18
GND
Ground reference
1
Chopper_Ena
Output signal, underclocking
2
I2C_SCL
I2C bus SCL
3
IO_1
User Output 1
4
I2C_SDA
I2C bus SDA
5
CAN_Rx
Reserved for CAN Rx
6
SPI_MOSI
SPI Bus MOSI
7
CAN_Tx
Reserved for CAN Tx
8
SPI_MISO
SPI Bus MISO
9
UART_Tx
UART Tx
10
SPI_nCS
SPI Bus Chip-Select
11
UART_Rx
UART Rx
12
SPI_CLK
SPI Bus Clock
13
USB_M
Reserved for USB D-
14
USB_P
Reserved for USB D+
15
IO_2
User Output 2
16
IO_3
User Input 1
19
VDD
Supply voltage
20
VDD
Supply voltage
Connector type for connection of cyber
®
reaction wheel 2: MOLEX SlimStack
PCB connector (16+2) 505070-1622
For alignment of the connector on the drive system, see dimensional drawing,
document number 5007-D060499.
Table 5: Pin assignment of connector A at the cyber
®
reaction wheel 2
2.1.5.2 Pin characteristics of connector A
Direction
Size
Value
Affected pins
General limits
Input
Maximum voltage for
low level
1.2 V
2, 4, 5, 6, 10, 11, 12,
13, 14
Permitted voltage range
of inputs: 0 V - 3.6 V
Minimum voltage for
high level
1.9 V
Output
Maximum voltage at
low level
0.4 V
1, 3, 4, 7, 8, 9, 15
Permitted maximum
current of outputs:
±4 mA each
Minimum voltage at
high level
2.4 V
Table 6: Pin characteristics of connector A at the cyber
®
reaction wheel 2
