NXP is a manufacturer of semiconductors, both ICs and discrete components.
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0answers
70 views
USB over FFC (flexible flat cable), where to place termination?
I have a design with a NXP LPC 4330 microcontroller using the USB port in high speed mode (acting as a mass storage controller). Due to the mechanical constraints of the system, the USB port must be ...
1
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0answers
32 views
Sdcc linker error "could not get183 consecutive bytes in internal RAM for area DSEG
I am trying to interface micro sdcard with P89V664 using Petit FatFs.
Petit FatFs link http://elm-chan.org/fsw/ff/00index_p.html.
Chan's Petit FatFs sample port are available at ...
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vote
2answers
58 views
Missing connection in amplifier example?
I've been staring at the datasheet for NXP's TDA1308 headphone amplifier IC for a while, and I'm just feeling confused.
Their recommended application circuit (Figure 4 in the datasheet) looks like ...
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3answers
91 views
Synchronizing SPI ports for higher data rate
I am designing a new board which uses the NXP LPC4330 (Cortex M4 microcontroller) with a XESS Xula2 FPGA development board. In this design, the Xula 2 has limited I/O pins since it is designed to fit ...
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1answer
126 views
Does an SD card in SPI mode respect chip select/slave select? Seems to be resetting in my application
I have an application where I have a microcontroller (NXP LPC1343) which is connected to an FPGA via 16-bit SPI. There is also an SD card using the same SPI port (MISO/MOSI) but with a different CS/SS ...
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3answers
188 views
Consensus on proper wiring for Cortex M 10 Pin JTAG Connector
For the past few weeks I have been working with the new revision of my ARM Cortex M4 design that I posted about a month ago, thanks again to everyone who provided me with much needed guidance and ...
3
votes
1answer
141 views
USB 2.0 PCB trace design restrictions
Thanks to the help from this community I am much closer to finishing my new design. Right now I am most worried about my USB 2.0 traces, and I want to make sure that I am doing everything right with ...
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4answers
158 views
Readying a New Design, would appreciate som feedback
I designed a Arduino shield compatible board around the NXP LPC4337JBD144. so far I have been unable to get the first revision to program.
In the first design the JTAG header was not setup ...
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votes
1answer
340 views
How can I communicate between micro-controller and PC without the use of RS232/USB Adapter?
I use an NXP micro-controller, P89V51RD2, and use a RS232 to USB converter to program it. I'd like to communicate with the computer to send data but without using the RS232 adapter and convert serial ...
3
votes
3answers
103 views
How can I store audio files in the uC ROM so as to serially transmit it to a decoder chip?
I am using an NXP micro controller (P89V51RD2) with on board flash of 64kB. I want to interface it with an audio decoder IC, probably VS1011 (if I can get the IC). What should I do to use on board ROM ...
2
votes
1answer
87 views
NXP LPC1343 GPIO questions
I am an embedded SW developer who wants to get more familiar with HW design. I have an LPCXpresso board with an LPC1343 on it. I want to build some circuit around that. I thought I'll start by finding ...
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1answer
123 views
PN512 not starting?
I got a PN512 IC (NFC controller from NXP) interfacing with a MCU over SPI and ChibiOS. Everything seems to be working fine, i can read the registers and they returned value matches with the reset ...
2
votes
2answers
166 views
I2C EEPROM with non-standard address?
So I know that almost all i2c EEPROM ICs use 0xAh (or 1010) as the top four bits of the slave address. I currently have a 16 kbit EEPROM on my i2c bus that uses the lower 3 bits of the slave address ...
1
vote
2answers
163 views
How can I detect HIGH or LOW input on a NXP microcontroller?
I am using NXP micro-controller P89V51RD2. I need to detect HIGH or LOW from 2 single bits. How do I store input state to a pre-defined address so that my functions can detect it as data?
I need to ...
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0answers
672 views
Getting started with LPCXpresso
I just got my LPCXpresso 11U14 Cortex M0 board. I spent a week trying to get SPI working and I still get compiler errors!
I've tried to use the example projects on NXP's website, but they are all for ...
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3answers
238 views
LPC1343 Firmware Loading - Change drive label
I have a system that is using the built-in firmware loading facility of the LPC1343. When the flash drive is mounted, the disk is always labeled "CRP_DISABLED". Is there a way to change the label of ...
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0answers
95 views
Expand RAM and flash on LPC2294
I have a project in mind. I want to buy an LPC2294 microcontroller, SDRAM IC, and flash IC (those IC's haven't yet been defined). What I want to do is connect those ICs to the microcontroller in order ...
4
votes
1answer
392 views
Can an LPC1343 accept its initial program over USB?
The LPC13xx datasheet suggests some clock setup is necessary to use USB. Does the chip's built in boot loader make it possible to load the initial program over USB, or do the clock multipliers have to ...
4
votes
1answer
1k views
Running a CAN sample project on LPCXpresso LPC11C24
The LPC11C24 has a on-chip CAN transceiver and a section of ROM with CAN driver software. I am trying to run the can_onchip sample project on the LPCXpresso board. ...
5
votes
2answers
277 views
Why are chips used in electronic identity cards?
Why did Germany choose NXP's SmartMX chip in the new Electronic ID Card (see here) instead of having a more conventional solution, like an old credit-card-like approach?
In fact, the question is ...
1
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2answers
285 views
Reading a LPC2378 microcontroller
I can't get data off my ARM LPC2378 microcontroller - does it need UART or can any GPIO be used?
