Datasheet AP1042 (Asahi Kasei Microdevices) - 8
| Manufacturer | Asahi Kasei Microdevices |
| Description | 32V 1ch H-Bridge Motor Driver IC |
| Pages / Page | 18 / 8 — 9. Functional Descriptions. 9.1. Control Logic |
| File Format / Size | PDF / 864 Kb |
| Document Language | English |
9. Functional Descriptions. 9.1. Control Logic
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Text Version of Document
[AP1042]
9. Functional Descriptions 9.1. Control Logic
Truth Value Table in Operation Status Table 1. Output State of the Input Signal (INnA, INnB, SEL, SLEEPB) Input Signal MODE Output Operation SLEEPB SEL INA INB OUTA OUTB 1 L L Hi-Z Hi-Z Standby (Spin-out) 2 L L H L H Reverse 3 H L H L Forward 4 H H H L L Break (Stop) 5 L X L L Break (Stop) 6 H H L H L Forward 7 H H L H Reverse 8 L X X X Hi-Z Hi-Z Power-off Note 14. X: Don’t Care SLEEPB Pin Function The AP1042 becomes power-off state by inputting “L” level signal to the SLEEPB pin. When the AP1042 is powered off, most of internal circuits (regulator, charge pump, control circuit, protection circuit and etc.) are disabled and the AP1042 output is Hi-Z. By inputting "H" level signal to the SLEEPB pin, the AP1042 is powered on, the control circuit and protection functions are reset and the AP1042 enters operation mode. It is recommended to input "L" level signal to the SEL, INA and INB pins for 3 ms (max) until the internal circuit stabilizes after releasing the power-off state. In order to prevent a malfunction just after turning on the power supply, it is recommended to input "L" level signal to the SLEEPB pin up on power-up. Before the internal circuit stabilizes, note that the start timing of motor driving will be undefined if input conditions of the SEL pin, INA/INB pin, etc. are set as the motor driving condition or if the power is turned on while the input level of the SLEEPB pin is “H”. Table 2. SLEEPB Pin Setting SLEEPB Pin Status L Power Off (Output: Hi-Z, Internal Circuit Stop) H Normal Mode Figure 6. Power-off Release Timing Chart Example 019002353-E-00 2019/03 - 8 - Document Outline 1. General Description 2. Features 3. Table of Contents 4. Block Diagram 5. Pin Configulations and Functions 5.1. Pin Layout 5.2. Pin Functions 6. Absolute Maximum Ratings 7. Recommended Operation Conditions 8. Electric Characteristics 9. Functional Descriptions 9.1. Control Logic 9.2. PWM Duty Control 9.3. Protection Functions 10. Recommended External Circuit 11. Package 11.1. Outline Dimensions 11.2. Land Pattern 11.3. Marking 12. Ordering Guide 13. Revision History IMPORTANT NOTICE
9. Functional Descriptions 9.1. Control Logic
Truth Value Table in Operation Status Table 1. Output State of the Input Signal (INnA, INnB, SEL, SLEEPB) Input Signal MODE Output Operation SLEEPB SEL INA INB OUTA OUTB 1 L L Hi-Z Hi-Z Standby (Spin-out) 2 L L H L H Reverse 3 H L H L Forward 4 H H H L L Break (Stop) 5 L X L L Break (Stop) 6 H H L H L Forward 7 H H L H Reverse 8 L X X X Hi-Z Hi-Z Power-off Note 14. X: Don’t Care SLEEPB Pin Function The AP1042 becomes power-off state by inputting “L” level signal to the SLEEPB pin. When the AP1042 is powered off, most of internal circuits (regulator, charge pump, control circuit, protection circuit and etc.) are disabled and the AP1042 output is Hi-Z. By inputting "H" level signal to the SLEEPB pin, the AP1042 is powered on, the control circuit and protection functions are reset and the AP1042 enters operation mode. It is recommended to input "L" level signal to the SEL, INA and INB pins for 3 ms (max) until the internal circuit stabilizes after releasing the power-off state. In order to prevent a malfunction just after turning on the power supply, it is recommended to input "L" level signal to the SLEEPB pin up on power-up. Before the internal circuit stabilizes, note that the start timing of motor driving will be undefined if input conditions of the SEL pin, INA/INB pin, etc. are set as the motor driving condition or if the power is turned on while the input level of the SLEEPB pin is “H”. Table 2. SLEEPB Pin Setting SLEEPB Pin Status L Power Off (Output: Hi-Z, Internal Circuit Stop) H Normal Mode Figure 6. Power-off Release Timing Chart Example 019002353-E-00 2019/03 - 8 - Document Outline 1. General Description 2. Features 3. Table of Contents 4. Block Diagram 5. Pin Configulations and Functions 5.1. Pin Layout 5.2. Pin Functions 6. Absolute Maximum Ratings 7. Recommended Operation Conditions 8. Electric Characteristics 9. Functional Descriptions 9.1. Control Logic 9.2. PWM Duty Control 9.3. Protection Functions 10. Recommended External Circuit 11. Package 11.1. Outline Dimensions 11.2. Land Pattern 11.3. Marking 12. Ordering Guide 13. Revision History IMPORTANT NOTICE
