LPC2103 DATASHEET PDF

This site uses cookies to deliver our services and to show you relevant ads and job listings. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Introduction to Microcontrollers Mike Silva. Arduino Robotics Lonnie Honeycutt. Are you sure that device must respond to start condition? I very carefully studied i2c specification, LPC datasheet and AN appnote with osciloscope figure!

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This site uses cookies to deliver our services and to show you relevant ads and job listings. By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. Introduction to Microcontrollers Mike Silva. Arduino Robotics Lonnie Honeycutt. Are you sure that device must respond to start condition?

I very carefully studied i2c specification, LPC datasheet and AN appnote with osciloscope figure! There are no ACKnowledge to start condition. Device starts responding only after slave adress was sent.

Some boards have them and others don't. You won't get an ACK to the address but that comes later. The start condition just lowers the data line while the clock line stays high. The 4. There is a calculation in the specification document and the pull-ups are usually in the 2K range.

Of course, the bus should also operate at 5V. But that's a separate issue and dependent on devices on the bus. This code is for the LPC but it should be pretty close. Anyway I'll try to communicate with second I2C on my microcontroller Slave device would not respond on start condition, 0x08 state is internal respond of master, slave respond after received its address! I've connected I2C0 and I2C1 pins and tried communication. Still doesn't work Your code snippet doesn't show this. Call your local LPC rep and make sure that they notify all their customers around the world that this basic function is not working correctly.

They may have to explain to customers that insist that it is working fine for them that they are mistaken. I found bug in my brain. I'll call LPC to notify them that I'm looser. Topic is closed. Kill me, please. Sign in Sign in Remember me Forgot username or password?

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LPC2103 Datasheet

Single flash sector Single flash sector or full chip erase in ms and programming of bytes in 1 ms. Vectored interrupt controller with configurable priorities and vector addresses. Up to 13 edge or level sensitive external interrupt pins available. On-chip integrated oscillator operates with an external crystal in the range from 1 MHz to 25 MHz. Processor wake-up from Power-down mode via external interrupt or RTC. A bit wide memory interface and a unique accelerator architecture enable bit code execution at the maximum clock rate.

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