 |
|||
|
|
|||
| ||||||||||
|
|  MIL-M-38510/505C
4.6.1.2 Circuit C.
Raise VCC to 5.0 V.
a.
Raise PGM ENABLE pin to VIHH.
b.
c.
Select an Input line by applying appropriate logic levels to PI pins.
d.
Select a Product line by applying appropriate logic levels to PA pins.
e.
Pulse PGM VERIFY pin to VIH using the minimum timing conditions specified in Table IX, and verify that
the outputs 00-07 are in the state corresponding to an unblown fuse.
(1) For verified unblown condition, continue procedure from 4.6.1.1c to 4.6.1.1e.
(2) For verified blown condition stop procedure.
4.6.2
Programming algorithm.
4.6.2.1 Circuits A and B.
Rise output disable pin, OE, to VIHH.
a.
b.
Lower clock pin to VIL.
c.
Select an input line as specified in 4.6.1.1c.
d.
Select a product line as specified in 4.6.1.1d.
e.
Raise VCC to VIHH.
f.
Program the fuse by pulsing the output pins of the selected group (one at a time) to VIHH (see figure 5a
for circuit A, and figure 5b for circuit B).
Lower VCC to 5.0 volts.
g.
h.
Repeat this procedure from 4.6.2.1c until pattern is complete.
4.6.2.2 Circuit C.
a.
Raise PGM ENABLE pin to VIHH.
b.
Select an input as in 4.6.1.2c.
c.
Select a product line as in 4.6.1.2d.
Raise OE to VIH.
d.
e.
Raise selected PO pin to VIHH.
f.
Program the fuse by pulsing VCC to VIHH.
g.
Remove output voltage.
h.
Repeat this procedure from 4.6.2.2b until entire pattern is complete.
8
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals