LAN8720AI - QFN Package confusion (max25)
Hi, i know its a SMSC-Device. I hope, someone can answer me this anyway. I want to use a LAN8720AI-CP, because it seems to be more common than a LAN8720AI-CP-ABC. I am not able to determine the...
View ArticleHow to use an USB bridge to SDcard USB2241 in an embedded system (hermallorn)
Hi,I want to share data on a SDcard between my embedded MCU (PIC32MZ) and a host PC throught USB.I don't want to access the SDcard thought the MCU because it is really busy so I thought i should use a...
View ArticleSPI problem with MCP3550 ADC (Spacerowa)
I am using the MCP3550 22bit adc in single conversion mode.The conversion data is being read using SPI mode 0, 4 byte transfer, in accordance with the device data sheet, so I can test the SDO/RDY flag...
View ArticleMCP6S21T (Advice1)
I have designed the MCP6S21T Programmable Gain Amp into a sensor circuit. Vref is tied to Vss is tied to ground. VCC is run at 2.8V, If I let the input run at 0 to 100mV or more I get a great signal on...
View ArticleDigital pot voltage range question (Dukenukem)
Hello everybody, I would like to buy a digital pot like the MCP41010. I can't find in the datasheet what are the voltage ranges at the three pot terminals (PA0, PW0, PB0). Can I apply a Vdd = 5V and...
View ArticleGrounidng TC429 mosfet driver (Dukenukem)
Hello everybody, I am building a single supply classD amplifier with a opAmp based preamplifier circuit, a PIC as PWM modulator and a bunch of TC429 mosfet drivers. At page 8 of the TC429 datasheet...
View ArticleMCP2200 USB -> UART Not Recognised (PIC_USR)
Hi,I've created my own board using the MCP2200EV-VCP as a basis, the MCP2200 section is identical and I've used a MAX232IN with 1uf caps.I've used the driver installer and it works fine, flashing the...
View ArticleUSB3300 ULPI Interface - Series Terminating Resistors - EMC Compliance...
Hi, I am currently using microchips USB3300 to create a High-Speed USB interface from my microcontroller to a downstream hub. Should the ULPI interface (data 0:7, stp, nxt, dir and clk) between the...
View ArticleMCP16301 EN pin threshold question (m3atwad)
Hello, I have a question about the threshold of the enable pin for this device. The data sheet (page 3 bottom of table) shows a row for V_ih input high threshold and a V_iL input low threshold. It...
View ArticleTC4468 Quad MOSFET Driver IC (daba)
Hi, I'm trying to use the TC4468 as the Common Anode driver for multiplexed LEDs with TLC5916IN Cathode Drivers. A 74HC595N drives the TC4468.The TLC5916IN provide "constant current" sink...
View ArticleMCP2210 USB to SPI: extra SPI clock when it's in SPI mode 2 or 3 (Zhe Hu)
When I configured MCP2210 (using MCP2210 utility) to send bytes with different SPI mode, if SPI mode was set to 0 or 1, it seemed to work correctly. However if SPI mode was set to either 2 or 3, there...
View ArticleEQCO-SDI-30-7502 (Slomo.tv)
Hi!I do the project on the basis of this device in the document "EQCO-SDI-30-7502 HD-SDI Repeater User’s Guide" there is a link to appnote AN1837 – “EqcoLogic HD-SDI Repeater Reference Design”...
View ArticleMCP3551 SDO/RDY pin latches High or into Floating state after some time...
Hi Has anyone had problems with the MCP3551 RDY pin been latched HIGH? I'm using the MCP3551 in Single Conversion mode in a system with more than one MCP3551 on a single SPI bus, each MCP3551 CS pin is...
View ArticleMCP16301 voltage input dropping out on power up (m3atwad)
Hello, I've been working on implementing the MCP16301 switching regulator into my battery powered product and am having some serious input voltage dropouts on power up. The attached file that shows...
View ArticleIs HV5522PG 3V3 LVTTL capable? (StefDrums)
Hello,I'm using an HV5522PG in my project, an I want to know if it is LVTTL (0V to 3,3 V) logic level capable on CLK, D IN, LE and BL pins. The datasheet says that I should use 0V to 12V logic, but I'm...
View ArticleUSB3340 ULPI Transeiver won't do "Charging Host Mode" acting as "Charging...
Hi, in my project we are currently in the process of updating our USB PHY from Microchip/SMSC’s 3320 to a 3340. We want to make use of advertised "support for the latest USB-IF Battery Charging 1.2 (BC...
View ArticleMCP23S17 SPI - 16 data or 8 data ? (davidgrandson)
Hello, I am trying to implement interface for MCP23S17 for dsPIC33F (could not find ready implemented driver),I could not understand from datasheet what's the required timing with spi.Should it expect...
View ArticleProblems with reading current from MCP39F511 (Power Meter) (hamsterhunter)
Hello, I'm having difficulties reading the correct current from the MCP39F511. My design is very similar to the Power Monitor Demonstration Board (same components but different layout). I'm switching a...
View ArticleRange of PAC1710/20 (juwel997)
Is it possible to measure a dc voltage higher then 50 volts using PAC1720?..
View ArticleConversion of voltage polarity from negative to positive...
Hi all, My application is based on to sink voltage from RS232 (DB9 connector) port to operate my device.As we all know RS232 generate around +-15V as per the data bits on TX pin. -15V for logic 1 and...
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