pcrider
Junior Member level 1
sti5500 schematic
I'm looking at a data sheet for a hy29f400bt bottom boot sector 4 meg flash memory chip. Trying to figure out the absolute address at the begining of memory and all I've figured out is I don't know what I'm looking at.
Actually I'm looking at this data sheet because I know the beggining of memory for one device using this chip is 7ff80000.
What I need to figure out is what is the absolute address for the start of memory for the 29f800tt top boot sector 8 meg flash memory chip.
I know it uses the same processor so I'm asuming that I only need to allow for the difference in the memory chips themselves.
Looking at the data sheets I see:
device | sector | size | sector address | byte mode | word mode |
S0 64/32 A[17]....A[12] adr. range adr. range
adress range is given something like 0x00000 - 0x0ffff
I see this as 5 digits, how can I get adress 7ff80000 with only 5 digits?
Also at the bottom of the memory array organization table I see somthing like: 3. address in byte mode is A[17:-1]
I have been studying on 68hc11 mcu but I have never seen anything like this.
If someone could explain some of the terminology used, and maybe a pointer or two it would help.
Thanks in advance,
Mike Brooksher
I'm looking at a data sheet for a hy29f400bt bottom boot sector 4 meg flash memory chip. Trying to figure out the absolute address at the begining of memory and all I've figured out is I don't know what I'm looking at.
Actually I'm looking at this data sheet because I know the beggining of memory for one device using this chip is 7ff80000.
What I need to figure out is what is the absolute address for the start of memory for the 29f800tt top boot sector 8 meg flash memory chip.
I know it uses the same processor so I'm asuming that I only need to allow for the difference in the memory chips themselves.
Looking at the data sheets I see:
device | sector | size | sector address | byte mode | word mode |
S0 64/32 A[17]....A[12] adr. range adr. range
adress range is given something like 0x00000 - 0x0ffff
I see this as 5 digits, how can I get adress 7ff80000 with only 5 digits?
Also at the bottom of the memory array organization table I see somthing like: 3. address in byte mode is A[17:-1]
I have been studying on 68hc11 mcu but I have never seen anything like this.
If someone could explain some of the terminology used, and maybe a pointer or two it would help.
Thanks in advance,
Mike Brooksher