TL866 27c400/800/160 Adapter
The eprom programming adapter will support 27C322 (4Mx8-bit), 27C160 (2Mx8-bit), 27C800 (1Mx8-bit) 27C400 (512kx8-bit).
Converts the mask- EP- EEP- ROM pinouts of the above parts to the JEDEC pinout of 27C4096 EPROMs (as supported by TL866 USB programmer, and possibly other cheap programmers too).
The TL866 programmer is supported through its MiniPro software by selecting '27C4096' device and disabling 'Check ID'. You may also like to reduce VPP Voltage to 12.50V (check your device data sheet).
Since the TL866 has only a 40-pin programming socket, the extra address pins on 27C800 27C160 are configured manually via dip switch:
27C400:no need to set dip switch, program all 512kB in one pass.
27C800:program in 2 512kB passes: A18=0 (bank 1), then A18=1 (bank 2)
27C160:program in 4 512kB passes: A19/A18=00,01,10,11 (banks 1,2,3,4)
27C322:program in 8 512kB passes: A20/A19/A18=000,001,010,011,100,101,110,111 (banks 1,2,3,4,5,6,7,8)
Since 27C322 is a slightly different pin-out to the other devices, there is a switch which must be used only for 27C322 devices.
1x DIP switch
1x DPDT switch
1x BC327 transistor
1x 48-pin ZIF socket
5x 10k resistor
TL866 27c400/800/160 Adapter
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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