I just got a TL866CS and I'd like to know how to write a 27C160 eprom with it.
Of course the 27C160 is DIP42 and will not fit into the 40pin zif socket but I was hoping I could use bankswitching and devide my file into 2 parts and write them separately.
My guess is that when I connect PIN42(A19) on the Eeprom to either GND or VCC to select the bank it might work as long as the device is able to ignore the eeprom's signature and use the correct algorythm to write it...
Has anybody done this before?
Ok since sending you a private message about this i have successfully programmed a 27c160 with the programmer..
Basically you need to program it with a 27c4096 which will program a quarter of the chip at a time, so you need to program it 4 times.
You need to wire it up using a breadboard so the pinouts match as they are not pin compatible. Also the 27c160 has two extra pins... (The address lines a18,a19). You need to wire up a header block to select between gnd and vcc for each pin.
So you program it 4 times with:
A18 GND, A19 GND (0,0)
A18 GND, A19 VCC (0,1)
A18 VCC, A19 GND (1,0)
A18 VCC, A19 VCC (1,1)
(Vcc is the same pin that is used for/as vcc on the eprom)
Make sure you have split the binary file up appropriately for each block.
You also have to select the correct voltages for the 27c160 i.e 12.5 program voltage and 6.25v verify. You must also turn off check device id when programming.
All pins are just connected to the equivalent on the other ic.
I.e 27c160 to 27c4096
!E to #CE
!G to #OE (G#)
Vss to vss (gnd)
vcc to vcc
byte-vpp to vpp
q0..q15 to dq0 to dq15
a0 to a17 to a0 to a17
I wont post a picture of my frankenstein converter it is soldered far too bad to show anyone publicly.
Hope this helps...