AMI SEMICONDUCTOR AMIS-30521
The AMIS-30521 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI interface with an external microcontroller. The AMIS-30521 contains a current-translation table and takes the next micro-step depending on the clock signal on the “NXT” input pin and the status of the “DIR” (=direction) register or input pin.| Part No. | AMIS-30521 |
|---|---|
| Datasheet | AMIS-30521 Download |
| Manufacturer |  AMI SEMICONDUCTOR |
| Description | Micro-stepping Motor Driver |
| Buy | Stock & Price |
FEATURES
●●
●
●
●
●
●
●
●
●
●
●
● Dual H-Bridge for 2-phase stepper motors Programmable peak-current up to 1.6A using a 5-bit current DAC On-chip current translator SPI interface Speed and load angle output Seven step modes from full-step up to 32 micro-steps Fully integrated current-sense PWM current control with automatic selection of fast and slow decay Low EMC PWM with selectable voltage slopes Active fly-back diodes Full output protection and diagnosis Thermal warning and shutdown Compatible with 5V and 3.3V microcontrollers 3.0 Ordering information Table 1: Ordering Information Part No. AMIS-30521 ANA Package NQFP-32 (7 x 7mm) Peak Current 1600mA Temp. Range -40°C…..125°C Ordering Code Tubes 0C521-001-XTD Ordering Code Tapes 0C521-001-XTP AMI Semiconductor – June 2007, M-20683-001 1 AMIS-30521 Micro-stepping Motor Driver Data Sheet 4.0 Block Diagram VDD CPN CPP VCP VBB CLK Timebase Chargepump POR EMC T R A N S L A T O R P W M I-sense CS DI DO NXT DIR SLA Temp. Sense Logic & Regi...
