User Manual

TMCM-1311 V1.2 Hardware Manual (Rev. 1.12 / 2013-JUL-05) 19
www.trinamic.com
3.5.3 General Purpose Inputs
The TMCM-1311 has two I/O connectors with 8 inputs altogether including two dedicated analog inputs.
All inputs offer the same basic input protection circuit, but digital and analog inputs have different input
voltages: the digital inputs have been designed for +5V and +24V signal levels. The analog inputs have
different input voltage dividers to support a full scale input voltage range of 0… +10V.
+3.3V
IN_1
IN_2
IN_3
IN_5
IN_6
IN_7
microcontroller
10k
22k
1nF
GND
GND GND
Figure 3.10 General purpose digital input circuit
+3.3V
AIN_0
AIN_4
microcontroller
22k
10k
1nF
GND
GND GND
Figure 3.11 General purpose analog input circuit
The function of the inputs might differ depending on the firmware version.
3.5.4 General Purpose Outputs
The TMCM-1311 offers two I/O connectors with 8 outputs altogether. All outputs are open-drain outputs
and a freewheeling diode (to V
DIGTAL
) is already integrated. Six outputs are designed for currents up to
100mA and two outputs offer more powerful MOSFET driver transistors supporting currents up to 1A.
If the V
CC
connection of the I/O connectors (connected internally to V
DIGITAL
) is used for the supply of
substantial current to any external circuit, make sure to connect V
DIGTIAL
to V
DRIVER
of the power supply
connector.
V
DIGITAL
OUT_0
OUT_1
OUT_2
OUT_3
OUT_4
OUT_5
OUT_6
OUT_7
microcontroller
GND
Figure 3.12 General purpose output (open-drain with freewheeling diode)