Assweasel
Newbie level 3
nor flash interfacing
I came across 2 256mb Intel Nor Flash (48f3300J0) in 64 ball BGA package.
So I buy them for a couple bucks and get to work trying to see if i can read them. Curiosity killed the cat. I had to do some reballing which i did successfully and then I made a pcb board that brings all the pins out to 4 16 pin sil headers.
What I was hoping to do from here was to either make an IDE interface or a USB Flash drive for them. Having failed on searching for any schematic showing how the NOR Flash interfaces with a microcontroller. I bought several usb drives and took them apart. Everyone i have looked at so far uses NAND Flash in a 56 pin TSOP package.
Since theses Nor chips are used in embedded systems they are most likely already pre-programmed as bootable ramdisks. I thought perhaps interfacing them as an IDE drive would work but again failed in finding any schematic or pinouts for such a device.
So i start hitting up the cellular schematics and again ran into the problem of finding that they to use NAND technology.
I am just a pure hobbiest with no formal training i have experince with several types of Pic Arm and 8051 microcontrollers I can program in any language and am not worried about the source code aspect of this project.
Questions i have are do NOR and Nand follow the same (CFI) specification?
If so would the interfacing to a microcontroller be the same for both or would there be differences?
Final question is there a standard method of interfacing these chips to a microcontroller and if so can anyone point me to it .
I have built successful projects using I2C CAN and SPI as memory buses but have run into a wall with this type of memory.
Thanks.
I came across 2 256mb Intel Nor Flash (48f3300J0) in 64 ball BGA package.
So I buy them for a couple bucks and get to work trying to see if i can read them. Curiosity killed the cat. I had to do some reballing which i did successfully and then I made a pcb board that brings all the pins out to 4 16 pin sil headers.
What I was hoping to do from here was to either make an IDE interface or a USB Flash drive for them. Having failed on searching for any schematic showing how the NOR Flash interfaces with a microcontroller. I bought several usb drives and took them apart. Everyone i have looked at so far uses NAND Flash in a 56 pin TSOP package.
Since theses Nor chips are used in embedded systems they are most likely already pre-programmed as bootable ramdisks. I thought perhaps interfacing them as an IDE drive would work but again failed in finding any schematic or pinouts for such a device.
So i start hitting up the cellular schematics and again ran into the problem of finding that they to use NAND technology.
I am just a pure hobbiest with no formal training i have experince with several types of Pic Arm and 8051 microcontrollers I can program in any language and am not worried about the source code aspect of this project.
Questions i have are do NOR and Nand follow the same (CFI) specification?
If so would the interfacing to a microcontroller be the same for both or would there be differences?
Final question is there a standard method of interfacing these chips to a microcontroller and if so can anyone point me to it .
I have built successful projects using I2C CAN and SPI as memory buses but have run into a wall with this type of memory.
Thanks.
