Sample Application Programs
Flash EEPROM Test
Line Description
1570 initializes HP 4155A/4156A.
enables the Service Request \Enable" Register for Command, Execution,
Device-dependent, and Query errors to generate service requests.
1580 and 1590 enables service request from HP 4155A/56A to interrupt program.
1610 denes names of measurement setup les for Vth measurement and
stress setup les for write stress and erase stress, and other stress setup.
1620 loads measurement setup le for Vth measurement and stress setup les
for write and erase into internal memories.
1650
Meas points
is specied in subprogram \Test setting".
1660 forces write and erase pulses. Refer to \Stress loop" for details.
1690 and 1700 loads measurement setup le for Vth measurement and stress setup le
for write pulse from internal memories.
1710 forces last write pulse, then measures Vth. Refer to \Vth meas".
1730 loads stress setup le for erase pulse from an internal memory
.
1740 forces last erase pulse, then measures Vth. Refer to \Vth meas".
1760 transfers measurement results (Vth shifts) to HP 4155A/4156A.
1770 displays measurement results.
1880 stores measurement results onto the diskette.
6-7
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