NAME

       eep24c - read and write 24Cxxx eeprom devices

SYNOPSIS

       eep24c -d device [ -r[n] filename | -w[n] filename | -k[n] filename | -f[n] xx ]

DESCRIPTION

       The command eep24c can be used to read and write 24Cxxx eeprom devices.

OPTIONS

       The following options are available:

       -d device
              Specify the device type. To see a list of the supported devices, try -d help

       -r filename
              Read from eeprom and save to a file.

       -w filename
              Read  from  a  file  and write to eeprom.  The addresses not specified in the input
              file will be filled with 00.

       -k filename
              Read from a file and write to eeprom.  The addresses not  specified  in  the  input
              file  will  be  kept with its previous values. (this mode is twice slower. It reads
              whole memory to know previous values, then write whole memory)

       -f XX  Fills the whole eeprom with XX (XX is an hexadecimal value)

       n      Can be used to multiply clock time. If you have a long  cable,  you  may  use  this
              option.  Example: -r5 will read eeprom 5 times slower (pulse width will be standard
              value multiplied by 5). Valid range for n is from 1 to 50.  Default value is 1.

USAGE EXAMPLES

       eep24c -d 24c04 -r file.hex
              read eeprom, write to file.hex

       eep24c -d 24c04 -r3 file.hex
              read eeprom, write to file.hex, 3 times slower.

       eep24c -d 24c04 -w file.hex
              read file.hex and write to eeprom. All the bytes not  found  in  file.hex  will  be
              written as 00.

       eep24c -d 24c04 -k file.hex
              read  file.hex and write to eeprom. All the bytes not found in file.hex will remain
              unchanged.

       eep24c -d 24c04 -f 7A
              fill eeprom with 7A (hexadecimal).

INPUT AND OUTPUT FORMAT

       Input and output file format is Intel Hexadecimal Object File Format
       You can find this specification at
       ftp://download.intel.com/support/processors/
       i960/devtools/INTELHEX.PDF
       Record types 00 and 01 are implemented in this version.  In input lines, LF and CR+LF  are
       accepted as newline markers.  Output files are generated with LF as a newline marker.

DEVICE SPECIFIC

       If  you  are  using  Microchip  24*515,  you  must tie its pin A2 to VCC (needs a hardware
       modification, see device datasheet).

SEE ALSO

       ihex2txt(1), txt2ihex(1).

AUTHOR

       This manual page was written by Pedro Zorzenon Neto <pzn@vztech.com.br>.

                                            2002-11-14                                  EEP24C(1)