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Recent content by awan

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    How to reset PIC16F88 using MCLR pin?

    Re: How to reset PIC16F88 How to set the MCLRE bit. As it is beyond the user space. It can be only set during programming. How do i set it during programming. Thanks, Awan
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    Microcontroller with Wireless Ethernet Interface

    Hi; I am looking for a microcontroller that has an embedded Wireless Ethernet interface. Something similar to Jennic and other microcontrollers with Zigbee interface. Thanks, Awan
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    How to reset PIC16F88 using MCLR pin?

    How to reset PIC16F88 Hi I am trying to reset my PIC using MCLR pin and driving it to low. But this doesnt reset the PIC. Does anyone know if i need to do some modification. Thanks Awan
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    External Watchdog Timer and Supervisiory IC

    Hi; I am trying to find an external watchdog timer with a timeout of upto several hours. I dont want to count several shorter timeouts to implement a timeout upto an hour and want a single interrupt. Is there any supervisory IC that gives such a long duration of timeout? Thanks
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    Analog bandpass filter- reference design needed

    Analog bandpass filter Hi; I am looking for some reference on the design of Analog Bandpass filters. I need to design the filter at 40Hz. And the filter needs to be around 7th order. Is it physically realizable. Thanks,
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    evolution of RAM from DRAM to DDR3

    Evolution of RAM Hi; I am looking for a guide on the evolution of RAM from DRAM to DDR3. An article that is comprehensive and explains all the stages. Thanks
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    SPI Communication using PIC as a master

    pic spi Hi; I am trying to send data from PIC16F88 to a slave Jennic Microcontroller. PIC16F88 can only send 8bits of data on SPI in one go. But for jennic to receive data, it should first get 0x02(status) and 0x00(zero padding for Jennic to reply) and then it expects the length of data being...
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    32bit Arithematic on PIC16F8*

    pic16f8 Hi; I am using Microchip HI-TECH C Compiler. I want to do some 32bit Multiplication and Additions. My calculation results will about upto atleast 40bits. Please if someone can guide me to some reference to handle this scenario. Thanks,
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    Compiler for PIC Microcontroller

    compiler for pic microcontroller Hi; I have just started programming PIC microcontroller and need some help. 1- If someone can provide me with a compiler for PIC. 2- I have a ICSP cable and trying to load a HEX file. I am using IC-Prog for loading my program. The loading fails at...
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    Testing Equipment - need recommendations on manufacturers

    Testing Equipment Hi; I need to buy the following equipment; any recommendations on manufacturers/website. 1- Signal Generator (Not very high frequency; just a normal one upto a few MHz) 2- Temperature Controlled Soldering Iron with multiple Tips (different sizes). Thanks
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    Variable Gain OP-Amps

    variable gain op amp, application note Could you please recommend a commercial digital pot that can be used for feedback resistance of the amplifier. I can only find digital pots with I2C and SPI interface. I am not sure if they can be used for my application.
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    Variable Gain OP-Amps

    variable gain op amp Hi; I want to implement a gain that can be varied from 10 upto 50 for frequencies upto 250Hz. I have been searching some OPAMPs and think there is a method to vary gain by changing resistance between two nodes of the OPAMP. I will need to use an electronic potentiometer...
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    Need battery charger references.

    To add to it; does anyone have experience in designing a supply from a rechargeable battery and a solar panel. The supply should maintain a constant voltage and also charge the battery, Thanks
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    which opamp is good for 250Hz Low pass sallen key filter

    Rather than adding a DC bias to the low pass node. For the inverting node in S-K the resistors and capacitors are connected to Ground. Can I change this Ground to Vcc/2 and do nothing to the input of Low Pass Node (i.e. the Non-Inverting Node). But I think this will cause the Non-inverting...
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    which opamp is good for 250Hz Low pass sallen key filter

    Hi LvM; You have summarised it correctly. The sensor cant provide a DC bias at 0.5Vdd and so i need to add a buffer with a decoupling Capacitor at the input. But since my signal is at such a low frequency, i dont understand as to how to achieve it. Is there some method to go around this problem?
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