ST EVALSP820-XS - 1 Board Overview; Table 1. Board Pinout

1 Board overview
The main characteristics of the board are:
• Supply voltage from 7 V to 45 V
• Output current up to 1.5 A rms for each motor phase
• Peak current regulation through trimmer
• Form factor and connectivity compatible with RAMPS (RepRap Arduino Mega Pololu Shield) or similar
boards
• Based on STSPIN820 driver featuring:
–
Stepper motor driving with a microstepping resolution up to 1/256
th
of step
– Overcurrent, short-circuit and overtemperature protections
Figure 1. Board overview
Table 1. Board pinout
J1
Signal J2 Signal
8 Enable (EN) 1 Motor supply voltage (VM)
7 Step mode selection input (M0) 2 Ground
6 Step mode selection input (M1) 3 Phase B out 1 (OUTB1)
5 Step mode selection input (M2) 4 Phase B out 2 (OUTB2)
4 NC 5 Phase A out 2 (OUTA2)
3 Active low standby (nSTBY) 6 Phase A out 1 (OUTA1)
2 Step-clock input (STEP) 7 Logic supply voltage (VDD)
1 Direction input (DIR) 8 Ground
UM2434
Board overview
UM2434 - Rev 1
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