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V990, support MX23L6454 Reply  
handsome
kruPL
 Hello.
I have VP990 and need read　MX23L6454 (mask rom from Macronix .).
Is it possible add support this chip to the VP990?

Datasheet:
http://www.zlgmcu.com/mxic/pdf/ROM_c/MX23L6454_DS_EN.pdf

Go back list [ Posted:2013-06-06 05:44:48 ] Edit Administer top

Re:V990, support MX23L6454 Reply  
beautiful
lxx
 Programmer cann"t support Mask Rom.
Go back list [ Posted:2013-06-06 08:32:47 ] Edit Administer Top

Re:V990, support MX23L6454 Reply  
handsome
kruPL
 VP990 support other mask rom devices. I dump HN62434 (ROM_HI and ROM_LO) from old Apple computer.
MX23L6454 is simple SPI chip. Only 3 commands are implemented. No security, block, other features...
Please help.
[ The message is modified by kruPL ]
Go back list [ Posted:2013-06-06 21:55:08 ] Edit Administer Top

Re:V990, support MX23L6454 Reply  
beautiful
lxx
 Please choose MX25L6445EMI *16SOIC,and modify VCC to 3V. You can try to read.
Go back list [ Posted:2013-06-08 14:27:18 ] Edit Administer Top

Re:V990, support MX23L6454 Reply  
handsome
kruPL
 I can read chip. I tried different devices from chip database:　MX25L6405D, MX25L6406E, MX25L6445E. (device id=off, VCC=2,7 or 3V). Read at 2,7V is correct ! (in datasheet MX23L6454 min. 3.0V).

Thank you
Go back list [ Posted:2013-06-11 21:25:12 ] Edit Administer Top
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