KTFRDM17C724UG, Rev. 1.0
8
Freescale Semiconductor, Inc.
Getting to Know the Hardware
3.9 Output Signal Definitions
The MPC17C724 IC has four output signals used to drive a 2 phase stepper motor. These signals are:
3.10 Screw Terminal Connections
There are four connectors on the FRDM-17C724-EVB which provide connections to the following signals:
3.11 Jumper J9
The FRDM-17C724-EVB has provision (not populated) for a jumper to accommodate measuring the total current consumption. If the fuse
is bypassed, use extreme care to make sure the maximum current for the MPC17C724 is not exceeded (0.4 A continuous, 0.8 A
peak/transients).
Table 6. Output Signal Definitions
Name
Description
OUT1A
Output A of H-Bridge 1
OUT1B
Output B of H-Bridge 1
OUT2A
Output A of H-Bridge 2
OUT2B
Output B of H-Bridge 2
Table 7:
Screw Terminal Connections
Name
Signal
Signal Description
J5
OUT1A
H-Bridge 1 output A
OUT1B
H-Bridge 1 output B
J6
CRES
Charge pump voltage for H-Bridge gate drive
VM
Motor supply input (this is also the supply for the on board voltage regulator)
GND
Primary ground connection for the motor power supply
J7
OUT2A
H-Bridge 2 output A
OUT2B
H-Bridge 2 output B
J8
SNS
Not Used
ANL
Not Used
GND
Additional ground
