Serial Flash Memory Programmer Schematic

#Serial Flash Memory Programmer Schematic drivers

The Presto is able to do various types of SPI and I 2C devices including SPI Flash devices. make all those GPIOs as inputs).ДЄ second choice to also consider is the USB programer from ASIX. 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. Alternate methods could include adding a MUX or analog switches in the driven interface lines.

The programmer would connect on the SPI flash side of the series resistors. The simplest way to do this is to put series resistors in the MCU driven lines between the MCU and the SPI Flash.

#Serial Flash Memory Programmer Schematic drivers

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. DediProg has application information bulletins available to help with correct design for in circuit use. 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. This USB connected device can program in circuit if you design your board correctly. One choice is the programmer from DediProg. This also known as in-system-programming (ISP). 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.