27C512 Emulator
An open-ended design
Materials
Gerber file
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Component list
R1,R2,R4 = 10k?
R3 = 10 k? 8-way SIL array
R5,R6,R7 = 1k?
Capacitors:
C1,C2 = 22pF
C3,C5-C8 = 1?F 16V radial
C4,C9,C10,C23 = 100nF
C12-C22 = 100nF, SMD, shape 1210
C11 = 10?F 16V radial
Semiconductors:
D1 = 1N4001
D2, D4 = LED 3mm red
D3 = LED 3 mm green
IC1= MAX232N (Maxim)
IC2 = EPM7064SLC84-15 PLCC, programmed, Publishers order code 030444-31
IC3 = CY7C1019B-15VC (Cypress)
IC4 = AT90S8515-4PC DIP 44 pins, programmed, Publishers order code 030444-41
IC5 = 7805CP
Miscellaneous:
JP1 = 2-way SIL pinheader with jumper
JP2 = 3-way SIL pinheader with jumper
K1,K2 = 10-way boxheader
K3 = 9-way sub-D socket (female), PCB
mount
K4 = DC adaptor socket
K5 = 2-way SIL pinheader
K6 = length of 28-way flatcable with DIP IDC connector
S1 = pushbutton, 1 make contact
X1 = 3.6864MHz quartz crystal 84-way PLCC socket
PCB, ref. 030444-1 from the PCBShop
Enclosure, e.g, Hammond type 591-D
project software, Publishers code 030444-11
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