NCV70501DW002R2G ON Semiconductor

NCV70501 Micro-Stepping Motor Driver Introduction NCV70501 is a microstepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI NCV70501 VBB Internal voltage Timebase regulator 3.3 V CLK STALL EMC MOTXP CSB P W TSD SPI DI M MOTXN Isense DO Open / Short NXT Logic & EMC MOTYP DIR Registers P W OTP M MOTYN Isense POR RHB NCV70501 Band ERRB gap TST GND Figure 1. Block Diagram NCV70501 Table 1. PIN LIST AND DESCRIPTION Name Pin Description DO 1 SPI data output CSB 2 SPI chip select input DI 3 SPI data input GND 4 Ground CLK 5 SPI clock input NXT 6 Next microstep input DIR 7 Direction input ERRB 8 Error Output RHB 9 Run/Hold Current selection input MOTYN 10 Negative end of phase Y coil output MOTYP 11 Positive end of phase Y coil output VBB 12 Voltage supply Input GND 13 Ground MOTXN 14 Negative end of phase X coil output MOTXP 15 Positive end of phase X coil output TST 16 Test pin input (to be tied to ground in normal operation)