MIL-M-38510-505 Microcircuits, Digital, Bipolar Programmable Logic, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, bipolar, programmable logic microcircuits which employ titanium tungsten resistors as the fusible link or programming element. Two product assurance classes B and S and a choice of case outlines and lead finishes are provided and are reflected in the complete part or identifying number PIN. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.

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MIL-M-38510/505C

4.6.1.2   Circuit C.

a.    Raise VCC  to 5.0 V.

b.    Raise PGM ENABLE pin to VIHH.

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.

a.        Rise output disable pin, OE, to VIHH. 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).

g.    Lower VCC  to 5.0 volts.

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. d.    Raise  OE  to VIH.

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.

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