The arrangement of pins and their functions on a device

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Meaning of control pins: CE, OE, WE

Just understanding some syntax. On my Ram (6116) and Rom (27C64) it has a asserted low CE and OE pins. These I believe are control pins. I'm assuming to use the RAM for example, chip enable (CE) has ...
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1answer
38 views

Standard nomenclature for 2-row connector numbering schemes

Two-row connector blocks are ubiquitous in small-run and hobbyist PCB designs. Pitches of 0.1" or 2mm are the most common, and there are all sorts of options for board-to-board or board-to-wire ...
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36 views

Purpose of the Latch Enable (\$\overline{LE}\$) and Ripple Blanking (\$\overline{BI}\$) pins on 74HC4511

I am looking at the datasheet for the 74HC4511 (available here), and I am confused by the usage of two of the pins: Firstly, the "Latch Enable" pin (\$\overline{LE}\$), and secondly the "Ripple ...
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1answer
58 views

Designing RJ45 connector to have 100Ω differential impedance

I'm designing two pairs of connectors that have same layout as RJ45 (just 2 inner pins) to have 100 ohm impedance deferentially. Are there tools that allow to calculate impedance or ...
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1answer
79 views

Help me understand the pinout of this 21" LED display driver

I am trying to connect a 21" LED Display driver's input pins to my power board. There is a datasheet also but it doesn't have the input pin diagram. Therefore, I have got the below attached input pin ...
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1answer
194 views

Utility of two pins requiring same voltage

I have a LED backlight driver, which has input pin assignment as: Pin Function 1,2 12V Input 3 Brightness control PWM : 100Hz~20KHz DC : 0.5V~2.5V 4,6 ...
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38 views

Help identifying pinout of LTM-0436M multi-segment LED

I've got following unique segmented LED display module from local store. It has 8-pin (physically similar to common 7-Segment display), the marking on body of the module is clearly printed as ...
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1answer
74 views

buck-boost, SEPIC IC out 3.3V and min 500mA 0.1" packaging

I am building some sort of navigation device for a logisitics project in my company. The whole thing is going to be battery (6V) powered, so I'm looking for every possible way to avoid losses to heat ...
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1answer
149 views

Do 9-pin LCD modules have a standard interface?

I bought some text LCD modules without spec sheets or obvious part numbers. They all have a series of connector pins, unlabelled other than a 1 to indicate pin 1. I was able to get the one with a ...
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1answer
86 views

How can I power a SCSI hard drive without a motherboard/scsi card?

While this is possibly more of a Super-User question, I chose to put it in EE because I'm looking for information about power assignments on SCSI cables, and understanding how to send power ONLY (not ...
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2answers
170 views

Connect a microSD reader to a LilyPad USB, where are the digital ports?

I am attempting to connect a microSD breakout board to a LilyPad Arduino USB. The microSD board has previously been connected to an Arduino Duemilanove. In the Duemilanove setup, the following ...
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4answers
130 views

Confused about IN/OUT architecture of z80 chip

I am reading the manual, and it's a bit complex. I can't understand the machine code encoding for the life of me, but that's not my main concern ... my main concern is the address/data buses. I do ...
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58 views

Datasheet or other info on camera module of Samsung Galaxy S WiFi 3.6

I got a couple of dead (water damage, broken) Samsung Galaxy S WiFi 3.6, so I'd like to use some of the parts of them. Especially I hoped to use the camera modules for some µC-Projects, but I can't ...
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1answer
511 views

Pinout of iPhone 4/4S rear camera connector?

Has anyone come across the pinout of an iPhone 4/4S rear camera module connector?
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1answer
509 views

Pinout of Audi 2008 A4 Quattro 3.2L MMI to iPod?

I have came across an Audi A4 2008 Quattro 3.2L, and in the glove compartment it an iPod dock. I took it apart and behind the iPod dock there is a PCB which connects to the ipod connector (which ...
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1answer
288 views

Interface/pinout of a smartphone camera module?

I am wondering where, if any, I can get information regarding interfacing/connecting with a smartphone camera module. For example, this camera module is a replacement for SGS4 and I can clearly see ...
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2answers
305 views

Program to draw pinouts (and easily visualize pin's multiplexed functions)

Documenting an electronics project is also an important task if it will be used by someone else other than the hardware designer(s). Right now I need to draw a diagram for a breakout board in order to ...
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2answers
334 views

Why would the VCC/GND pins of an ATtiny26 not be aligned?

In the following pinout diagram for an ATtiny26 microcontroller, a 20-pin IC: The VCC/AVCC and GND pins aren't aligned. Surely it would be easier for PCB design to connect these by going straight ...
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1answer
61 views

What does the RNF pin do on an H-bridge?

The H-bridge in question is a BD6212FP. Pins 7 and 8 are marked "RNF". Below is a link to the datasheet. http://www.farnell.com/datasheets/46169.pdf
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2answers
816 views

What's an alternate pin function on a microcontroller?

I'd like to know what "Alternative Function" refers to in the context of the IO ports of a microcontroller. I don't need to know how to activate it when connecting to a peripherial, but I'd like to ...
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0answers
340 views

Alarm Clock 7 Segment LED display

I recently got an alarm clock from goodwill and took it apart and am probably going to use the display for some tests. Here is a picture of the front of the display: The text on the left is ...
2
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1answer
158 views

What is the metal sheath surrounding a USB connector, and is it commonly connected?

I was tearing apart a mouse for repairs and noticed that the small plug for the USB connection had a fifth connection. This connection had a much thicker wire than the other four. I assume it is ...
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2answers
371 views

How to determine the pinout of this connector?

I am sorry for the potentially awkward question, but does anyone know how I can figure out how this 9-pin serial is wired, without tearing it apart? Am I supposed to be able to see how it is wired by ...
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6answers
409 views

Identifying pin numbers from PCB

I have a PCB with documentation. In the documentation, there is referred to specific pins of several jumpers and connectors. On the PCB however, there isn't a label or so for which pin has what ...
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2answers
122 views

Newb Voltage regulator pin-out question

So I just put my first complicated circuit together and of coarse it doesn't work, good news is I found the problem. Given a LA5752 voltage regulator I assumed the hookup was pin1->Vin, pin3->GND and ...
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350 views

4 pin microphone SMD pinout indentification

Is there any way to "guess" what's the pinout for microphone without damaging it? Better yet do you know what's the pinout for this? (I have searched on the web but most no site provide schematics. ...
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1answer
264 views

24v brushless DC Driver Pinout

I have some Brushless DC Motors with drivers and I need some help finding the pinout of the drivers. Please take a moment to view the pictures here, clicking on a picture will show its ...
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1answer
495 views

Why JTAG connectors are available in 10pins/14pins/20pins when JTAG is of 5pins

AFAIK, JTAG is requires 5 pins (Wikipedia article): TDI (Test Data In) TDO (Test Data Out) TCK (Test Clock) TMS (Test Mode Select) TRST (Test Reset) optional. Let's add two more Power supply Pins ...
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6answers
2k views

Is there any definitive I2C pin-out guidance out there? Not looking for a “STANDARD”

EDIT: This has been repeated several times, so putting it on top: Yes, it is well known that there is no "standard" for I2C inter-device connectors, but surely this community can formulate a list of ...
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2answers
728 views

male-male VGA cable wiring

I need to build a VGA cable (assemble connectors to wire). I need a male-male cable. Is its wiring straight or cross? (should i connect 1-1,2-2,... or something else) Thanks
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2answers
888 views

Identifying Pins of an Unknown LCD

I got a LCD removed from some device. I need to check whether it is working. But the thing is I only have the LCD, no datasheet or any documentation regarding that. I have an Arduino mega 2560. I'm ...
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2answers
132 views

Power consumption of unimplemented pins?

New versions of TI's Code composer studio have a lint-like tool which checks the code and provides recommendations on how to modify the code to decrease power consumption. One of the things I've ...
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1answer
2k views

What is the pinout for HTC One X docks?

I used to have a Motorola Milestone which used magnets to detect car and desktop docks. I've now got an HTC One X and am looking for dock options. The standard ones look pretty expensive, but there ...
5
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2answers
2k views

Which pair of an Ethernet cable does a router transmit on?

I've seen numerous articles about straight-through and crossover cables and why they are needed. With conventional straight-through cabling, one device transmits on pair 2 (pins 3 and 6) while the ...
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2answers
663 views

Can't figure out this seven segment display

I recently bought four of these seven segment displays: http://www.electrokit.com/en/leddisplay-7segment-58mm-red-green-ca.49450 I'm having no luck however to make it to work, and since there is no ...
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1answer
206 views

Help identifying connections on Kyosan KE750 power supply

I recently picked up a used 12V power supply for dirt cheap. It is a Kyosan KE750. I've searched the Internet for a manual, but have not been able to find any. Yes, I have plugged it in, and it ...
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0answers
153 views

What is the usage of 3rd lead in mobile batteries [duplicate]

Possible Duplicate: Why we have 3 pins on some batteries? I'm trying to build (DIY) open charger for mobile battery. I would like to know what is the usage the middle one? Is there ...
5
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2answers
407 views

Option to fail Xilinx process if pins are unconstrained

I am using Xilinx WebPack 13.2 and I recall there being a setting to force the Xilinx process to fail if a top level input/output net isn't constrained to a pin. I would like for the process to fail ...
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1answer
358 views

Symbols on aux sockets for old hifi [closed]

I have an old communist era E.European 'hifi' which I would like to connect a turntable too. There are three DIN socket inputs on the amp, and I assume one of them must be able to receive the phono ...
5
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1answer
363 views

Why is 1000Base-T RJ-45 pinout scrambled instead of having each diff. pair in sequence ?

I need to make an ethernet connection using a cable about 6 feet long to a small and low power gigE camera. Other signals are required (power to camera and hard trigger) and one cable is better than ...
5
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2answers
280 views

How to explain this difference in pinout?

Seemingly illogical pinout has been discussed before, but my question is different. Have a look at the pinouts for the Si8540: One would think that the pin order would be the same for both ...
6
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0answers
278 views

Why are IC pinouts often so illogical? [duplicate]

Possible Duplicate: Why are the pinouts of lpc21xx all over the place? I have often noticed, and found it quite annoying from a PCB layout point of view, just how illogical many IC's ...
4
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7answers
434 views

Why are the pinouts of lpc21xx all over the place?

I am working as a winter intern at a robotics company. My job is to assist the lead embedded developer in...whatever he wants my assistance in. About a week back, I was handed a NXP blueboard with ...