Pin Name and number Direction
~Index1
69
Description
This pin provides the Index signal for the incremental encoder. A valid index
pulse is recognized by the chip when
this signal transitions from
high
to
low.
input
There is no internal gating of the index signal with the encoder A
and B inputs. This must be performed externally if desired. Refer
to the Application Notes section at the end of this manual for an
example.
~Home1
70
input
This pin provides the Home signal, general-purpose inputs to the position-
capture mechanism. A valid Home signal is recognized by the chip when
~Home
goes
low.
WARNING! If this pin is not used, its signal should be tied high.
PosLim1
63
input
This signal provides input from the positive-side (forward) travel limit switch.
On power-up or
Reset
this signal defaults to active
low
interpretation, but the
interpretation can be set explicitly using the
SetSignalSense
instruction.
WARNING! If this pin is not used, its signal should be tied high.
NegLim1
64
input
This signal provides input from the negative-side (reverse) travel limit switch. On
power-up or
Reset
this signal defaults to active
low
interpretation, but the
interpretation can be set explicitly using the
SetSignalSense
instruction.
WARNING! If this pin is not used, its signal should be tied high.
This signal is an output during device reset and as such any
connection to GND or V
cc
must be via a series resistor.
AxisOut1
AxisIn1
94
V
cc
This pin can be programmed to track the state of any bit in the status registers.
If this pin is not used it may be left unconnected.
72
input
This is a general-purpose or programmable input. It can be used as a breakpoint
input, to stop a motion axis, or to cause an
Update
to occur.
If this pin is not used it may be left unconnected.
2, 7, 13, 21, 35, 36, 40, CP digital supply voltage. All of these pins must be connected to the supply
47, 50, 52, 60, 62, 66, voltage. V
cc
must be in the range 4.75 - 5.25 V
93, 103, 121
output
WARNING! Pin 35 must be tied HIGH with a pull-up resistor. A
nominal value of 22K Ohms is suggested.
GND
AGND
unassigned
unassigned
3, 8, 14, 20, 29, 37, 46, CP ground. All of these pins must be connected to the power supply return.
56, 59, 61, 71, 92, 104,
113, 120
78-81
These signals must be tied to AnalogGND.
If the analog input circuitry is not used, these pins must be tied to GND.
45, 48, 49, 51, 54, 55, These signals may be connected to GND for better noise immunity and reduced
73, 90, 91, 108, 109
power consumption or they can be left unconnected (floating).
5, 30-34, 38, 39, 42,
These signals must be left unconnected (floating).
57, 95, 96, 97, 100,
101, 102, 131
MC3510 Technical Specifications
28