ZHCSER7C October 2015 – November 2018 DRV8885
PRODUCTION DATA.
- 1 特性
- 2 應用
- 3 說明
- 4 修訂歷史記錄
- 5 Pin Configuration and Functions
- 6 Specifications
-
7 Detailed Description
- 7.1 Overview
- 7.2 Functional Block Diagram
- 7.3
Feature Description
- 7.3.1 Stepper Motor Driver Current Ratings
- 7.3.2 PWM Motor Drivers
- 7.3.3 Microstepping Indexer
- 7.3.4 Current Regulation
- 7.3.5 Controlling RREF With an MCU
- 7.3.6 Decay Modes
- 7.3.7 Blanking Time
- 7.3.8 Charge Pump
- 7.3.9 LDO Voltage Regulator
- 7.3.10 Logic and Multi-Level Pin Diagrams
- 7.3.11 Protection Circuits
- 7.4 Device Functional Modes
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文檔支持
- 12機械、封裝和可訂購信息
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
6.6 Indexer Timing Requirements
TA = 25°C, over recommended operating conditions unless otherwise noted| NO. | MIN | MAX | UNIT | ||
|---|---|---|---|---|---|
| 1 | ƒSTEP | Step frequency | 500 (1) | kHz | |
| 2 | tWH(STEP) | Pulse duration, STEP high | 970 | ns | |
| 3 | tWL(STEP) | Pulse duration, STEP low | 970 | ns | |
| 4 | tSU(DIR, Mx) | Setup time, DIR or USMx to STEP rising | 200 | ns | |
| 5 | tH(DIR, Mx) | Hold time, DIR or USMx to STEP rising | 200 | ns | |
(1) STEP input can operate up to 500 kHz, but system bandwidth is limited by the motor load
Figure 1. Timing Diagram