Hi, Microchip's datasheet for the pic16f88 says: The PIC16F87/88 oscillator design requires the use of a parallel cut crystal. Use of a...

Hi, Microchip's datasheet for the pic16f88 says: The PIC16F87/88 oscillator design requires the use of a parallel cut crystal. Use of a series cut crystal may give a frequency out of the crystal manufacturer's specifications. So I am choosing a 20MHz Xtal to use. The part I'm looking at is: RAKON -- CRYSTAL, 12SMX (B) 20 MHZ And the datasheet I have for it is here: http://www.farnell.c...

Hello I have an odd problem with some dsPIC code. I'm using MPLAB and a dsPIC Starter Kit 1. I have some C code calling an assembler...

Hello I have an odd problem with some dsPIC code. I'm using MPLAB and a dsPIC Starter Kit 1. I have some C code calling an assembler routine - in fact the Microchip FFT stuff. It doesn't work and causes the processor to hang or reset or go off on a jaunt - not sure which. I have three LEDs which the C code turns on if/when the assembler routine returns. If I put the appropriat...

I have found PIC Tutor from following company to be easy to learn. http://www.pictutor.com The documentation included with the Tutor is easy...

I have found PIC Tutor from following company to be easy to learn. http://www.pictutor.com The documentation included with the Tutor is easy to understand and covers various aspect. I recommend this PIC Tutor for any one trying to learn PIC microcontroller programming. Thanks, John

Hi guys, I am looking for a low cost 8/16 bits microcontroller with onboard irDA interface AND supplied with irDA stacks, at least irCOMM....

Hi guys, I am looking for a low cost 8/16 bits microcontroller with onboard irDA interface AND supplied with irDA stacks, at least irCOMM. I've found Zilog eZ80 Encore and a couple of Motorola chips (908LJ and 908AP, but not supplied with software stacks). Any other solution ? PS : Yes, I know, there are external chips like Microchip's MCP215X, but I would prefer an internal solution. ...

Just when you thought OTP was a thing of the past, someone shakes things...

Just when you thought OTP was a thing of the past, someone shakes things up. http://www.eeproductcenter.com/micro/brief/showArticle.jhtml?articleID=197800244 http://www.silabs.com/public/documents/pr_doc/products/Microcontrollers/Small_Form_Factor/en/T60 0_FINAL.pdf Looks likely to shake up Microchip and Freescale ? Wonder how they test these ? -jg

Hi, all. What current low-cost (USD $5-$10 in 1K) options do I have for a flash microcontroller (8/16/32 bit) with a built-in 10-base-T...

Hi, all. What current low-cost (USD $5-$10 in 1K) options do I have for a flash microcontroller (8/16/32 bit) with a built-in 10-base-T ethernet MAC+PHY, and reasonable program memory (say 32K or 64K minimum)?? Other than Microchip. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for...

Hi, Could someone describe to me how a microcontroller programmer can program a microchip, using RS232 signals. Taking a simple JDM programmer...

Hi, Could someone describe to me how a microcontroller programmer can program a microchip, using RS232 signals. Taking a simple JDM programmer to program a PIC16C84, I don't understand how RTS and CTS signals, which are onnected to data and clock pins (RB6 and RB7, if I am right!) can send program to the chip. I am confused ! I wanted to simulate the JDM circuit (using PSPice) to figure how the...

I'm designing a PIC clock circuit using the ST I2C interfaced RTC part MT41T81, and have found the datasheet a bit brief. I've had no...

I'm designing a PIC clock circuit using the ST I2C interfaced RTC part MT41T81, and have found the datasheet a bit brief. I've had no luck finding example code, which would make things a lot easier from a newcomer perspective. I want to code a PIC read/write of the RTC registers in Microchip C18, and any example code in this language would be really useful, though I would find an assembler ...

I am using the TC4427 MOSFET driver IC to generate some high voltages like Microchip's Appnote details here. The problem is according the the...

I am using the TC4427 MOSFET driver IC to generate some high voltages like Microchip's Appnote details here. The problem is according the the data sheet Vdd can be up to a max of 18v. If I apply anything much over 5v, the current draw goes over 1.5 amps and the chip dies almost instantly. I even took one IC and grounded the two inputs and left the outputs open and at 12v, the IC drew 1.8 amps...

Hi all, I've been looking for a rather simple library font for a graphics LCD with a KS0713 controller. We're using the PIC18F452 with the...

Hi all, I've been looking for a rather simple library font for a graphics LCD with a KS0713 controller. We're using the PIC18F452 with the Microchip C18 compiler. I found a couple that are rather big (Ramtex and Segger). All I need is the standard font size (5x7) and a couple of larger fonts. We are pressed for time so we rather pay for something already done ( < $1000). But, it must be si

I am wondering if the SoC (ARM/AMBA architecture) (where a whole system with upgradeable hardware modules/ IP cores can be stuffed inside a...

I am wondering if the SoC (ARM/AMBA architecture) (where a whole system with upgradeable hardware modules/ IP cores can be stuffed inside a single chip) will make all kinds of generalized microcontrollers (like PIC) obsolete. When PIC microcontrollers are used, they often need external hardware to help them, DSP blocks cannot be integrated into the chip at will (its all up to Microchip, w...

Hi, i am developing a battery (CR2032) powered device that must log a few sensors for a minimum of 3 months every minute but longer would be...

Hi, i am developing a battery (CR2032) powered device that must log a few sensors for a minimum of 3 months every minute but longer would be better. The duty cycle is very low. In order to save the data i will be using an SPI flash (16Mb). I was comparing at Atmel and SST (Microchip) and SST seems to have the lowest current consumption device (max 15uA at standby) but it is still a bit high compar...

Hi all, This is again a follow up on EEPROM discussion I had previously a few days back.Regarding I2C based EEPROM I recently came across...

Hi all, This is again a follow up on EEPROM discussion I had previously a few days back.Regarding I2C based EEPROM I recently came across an application note from Microchip company (Document name AN709). The note says : "FORCING INTERNAL RESET VIA SOFTWARE In all designs it is recommended that a software reset sequence be sent to the EEPROM as part of the microcontrollers power up sequenc...

What memory location should the beginning (lowest address) of flash EEPROM be ORG'ed for the PIC16F877A? Maybe this info is located in a F87x...

What memory location should the beginning (lowest address) of flash EEPROM be ORG'ed for the PIC16F877A? Maybe this info is located in a F87x data sheet or the mid-range ref. manual but I haven't found it. There are copious references to EEADR, EEDATA, etc., but no example of ORG-ing in an ASM file. Microchip seems to have hidden this vital info. very well. IIRC, I discovered this info....

I have been trying to use the read data EEPROM feature of the 16F88, but can't get it to work. I have used the sample code from Microchip's...

I have been trying to use the read data EEPROM feature of the 16F88, but can't get it to work. I have used the sample code from Microchip's datasheet. Attached is the (entire) ASM file that I am using. It should (I had hoped) store the value h'BB' in the register count1. Then read it from the data EEPROM location (h'20') and store it into the register count2. When I step through it in...

I noted that others were looking at and commenting on low cost solutions for TCP and related services as network controllers. One of the best...

I noted that others were looking at and commenting on low cost solutions for TCP and related services as network controllers. One of the best solutions today is the Microchip dsPIC and PIC 24. They are not 8 bits but 16 bits and share lots of great pic features. This is what you get: - low cost hardware - support for just about all interconnect you can imagine (no firewire though) - cots...

I want to build my own hardware programmer to program the Microchip PIC18 series of devices. I want to use the parallel port or possibly the USB...

I want to build my own hardware programmer to program the Microchip PIC18 series of devices. I want to use the parallel port or possibly the USB port. I don't want to use the serial port because they are now obsolete and no longer ship on newer computers. USB-to-Serial adapters cannot be used because programmers like IC-Prog and WinPic cannot work with these "virtual" serial ports - they need...

Hi, There's confusion between two newest Energy Meter's ref. designs: MCP3909-1PH1 and MCP3909-PM1: Energy Meter Reference Designs...

Hi, There's confusion between two newest Energy Meter's ref. designs: MCP3909-1PH1 and MCP3909-PM1: Energy Meter Reference Designs (boards/kits) info at MCP website is conflicting - the relation between two kits is undefined and 70% of required information for these two is hidden, which requires "detective" skills from anyone pondering the selction of either board or both. So, today...

Hi, There's confusion between two newest Energy Meter's ref. designs: MCP3909-1PH1 and MCP3909-PM1: Energy Meter Reference Designs...

Hi, There's confusion between two newest Energy Meter's ref. designs: MCP3909-1PH1 and MCP3909-PM1: Energy Meter Reference Designs (boards/kits) info at MCP website is conflicting - the relation between two kits is undefined and 70% of required information for these two is hidden, which requires "detective" skills from anyone pondering the selction of either board or both. So, today...

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2591&link=Banner ....and yes - there is a FreeRTOS.org port and demo...

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2591&link=Banner ....and yes - there is a FreeRTOS.org port and demo application available :o) http://www.freertos.org/port_PIC32_MIPS_MK4.html -- Regards, Richard. + http://www.FreeRTOS.org 13 official architecture ports, 1000 downloads per week. + http://www.SafeRTOS.com Certified by T?V as meeting the r...