Replaced winbond chip, is this correct? Hi, I have a Linux receiver that wouldn't flash properly, possibly due to a dodgy bootloader and thought I would try to replace the winbond chip, I have a GQ-4x programmer that I used to use for programming TSOP and luckily had an adaptor for it to fit the winbond.I have identified a replacement chip as 25Q32FVSIG. I found knocking around some old SPANSION S25FL016A chips that were very similar except for slightly different naming conventions to some of the pins, I programmed it with my bootloader after erasing chip and put it back on the PCB, the bootloader would become corrupted so I gave up with that and got the correct part which on ebay was W25Q32. I also tried to reprogram the original chip, firstly erasing it, then writing my bootloader to it, once the chip was back in the box I was in a semi up and running state but was still misbehaving.

I know have the correct chip and it is a new chip, however, when I put it in my programmer I done a blank check on it and it failed as if to say it wasn't blank, I have now read the image and saved it. What I am unsure of is, am I supposed to erase the chip before I put my booloader on or do I write straight on top of it?, I'm thinking that when I erased the original chip I erased something from it that is not supposed to be deleted, like a header or something for it. Som e solid advice would be greatly appreciated, until than I am going to attempt to write directly to the chip without erasing and put it in and see, if that doesn't work then I will erase it forst then write the bootloader and put in to pcb, in anycase, I have dumped the chip as soon as I received it and it certainly has something on it and I have it saved. EDIT: can write to chip but will not verify, I don't think it will let me erase it, when I erase it it happens in a nano second and still reports as failed on blank check.

If you are simply looking for a way to program the Winbond SPI flash with 'pre-loaded' data that your microcontroller would read for use when it is running then what you will want to look into is a programmer that can do in-circuit programming of the SPI Flash chip. This also known as in-system-programming (ISP). One choice is the.

This USB connected device can program in circuit if you design your board correctly. They even sell an adapter clip that can attach into the SOW-16 package without having to design in a separate programming header on your board. DediProg has application information bulletins available to help with correct design for in circuit use. The main strategy for the design is to find a simple way to isolate the SPI interface drivers in your MCU system so that they do not interfere with the drivers in the SPI programming pod. The simplest way to do this is to put series resistors in the MCU driven lines between the MCU and the SPI Flash.

5pcs New Winbond W25Q32FVSSIG W25Q32FVSIG 25Q32FVSIG 25Q32 SOP-8. This item includes a FlashcatUSB programmer, USB cable, and a 6-pin 0.1'.

The programmer would connect on the SPI flash side of the series resistors. Alternate methods could include adding a MUX or analog switches in the driven interface lines. An even more clever scheme is to add a 'programming enable' input to the MCU that makes the software disconnect all the SPI I/Os from the SPI Flash chip (i.e.

Make all those GPIOs as inputs). A second choice to also consider is. The Presto is able to do various types of SPI and I 2C devices including SPI Flash devices. I have one of these devices specifically for programming Atmel MCUs and various types of SPI Flash devices. Canopus procoder 5 with crack download windows.

It is a more cost effective solution than the above unit but not quite as flexible. Their more expensive device called the Forte is able to do more things because it has more target interface pins. Sometimes it can be beneficial to be able to connect a programmmer to a target board without having to add a programming header.

One nice solution for this is to place a small set of pads in a special footprint defined. They manufacture and sell a series of quick connect programming cables that have pogo pins that engage the special footprint on the board. There are 6-pin, 10-pin and 14-pin versions of the cable available to suit a range of applications. Cost of the cables are very reasonable. I have never heard of any other tools talking SPI directly to such a chip, and I think it is impossible since 'all' chips require different calls for different operations. The chip needs SPI calls for write, read, change sector, data size etc. Under 7.2 Instructions chapter in the datasheet you can see all the SPI commands you can send to it.