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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ACT8846 датащи(PDF) 43 Page - Active-Semi, Inc |
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ACT8846 датащи(HTML) 43 Page - Active-Semi, Inc |
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43 / 44 page  ACT8846 Rev 7.0 06-Dec-2017 Innovative PowerTM - 43 - www.active-semi.com Copyright © 2016-2017 Active-Semi, Inc. ActivePMUTM is a trademark of Active-Semi. I2CTM is a trademark of NXP. Errata Name: ACT8846 creates I2C BUS contention. Description: ACT8846 incorrectly detects its I2C slave address and pulls SDA low to acknowledge the address. This occurs under several conditions. 1. The IC is on a multi-slave I2C bus and the other slaves use multi-byte read or write commands, and the read/write data contains a string of bits that match the ACT8846 I2C address. 2. The host addresses a device with a 10 bit I2C address that contains a string of bits that match the ACT8846 I2C address. Work Around: This issue has several work arounds. 1. Do not put I2C devices that use multi-byte read or write commands on the ACT8846 I2C bus. 2. Disable the ACT8846 I2C communication after power up and before using any multi-byte read or write commands. This allows the user to do a one-time reconfiguration of the ACT8846 after power up. Disabling ACT8846 I2C communication reconfigures SDA and SCL high- impedance digital inputs. Because the specific commands to disable the I2C bus are CMI specific, please contact the factory for specific instructions. ERRATA INFO |
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