MIL-M-38510-203 Microcircuits, Digital, 1024 Bit Schottky, Bipolar, Programmable Read-Only Memory Prom, Monolithic SiliconThis specification covers the detail requirements for monolithic silicon, programmable read-only memory PROM microcircuits which employ thin film nichrome NiCr resistors, tungsten W, titanium tungsten TiW, or zapped vertical emitter ZVE as the fusible link or programming element. Two product assurance classes and a choice of case outlines and lead finishes are provided and are reflected in the complete part number. For this product, the requirements of MIL-M-38510 have been superseded by MIL-PRF-38535, see 6.4.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-38510/203E

8/ GALPAT (PROGRAMMED PROM)

This program will test all bits in the array, the addressing and interaction between bits for ac performance, tPHL1, and tPLH1. Each bit in the pattern is fixed by being programmed with a "H" or "L".

Description

1. Word 0 is read.

2. Word 1 is read

3. Word 0 is read

4. Word 2 is read

5. Word 0 is read

6. The reading procedure continues back and forth between word 0 and the next higher numbered word until word

255 is reached, then increments to the next word and reads back and forth as in steps 1 through 6 and shall include all words.

7. Pass execution time = (n2 + n) x cycle time. n = 256.

8. The GALPAT tests shall be performed with VCC = 4.5 V and 5.5 V.

9/ The outputs are loaded per figure 5.

10/ SEQUENTIAL TEST (PROGRAMMED PROM)

This program will test all bits in the array for tPHL2 and tPLH2. Description

1. Each word in the pattern is tested from the enable lines to the output lines for recovery.

2. Word 0 is addressed. Enable line is pulled hi to lo and lo to hi. tPHL2 and tPLH2 are read.

3. Word 1 is addressed. Same enable sequence as above.

4. The reading procedure continues until word 255 is reached.

5. Pass execution time = 256 x cycle time.

6. The sequential tests shall be performed with VCC = 4.5 V and 5.5 V

11/ The limits shall be as follows:

Device 01,02		Device 03,04
TPHL1	75 ns	TPHL1	35 ns
TPLH1	75 ns	TPLH1	35 ns
TPHL2	35 ns	TPHL2	20 ns
TPLH2	35 ns	TPLH2	20 ns

12/ For unprogrammed circuit G devices; apply 11.0 V on pin 7 (A2).