M38510/20909BKA E2V, M38510/20909BKA Datasheet - Page 59

• Manufacturer Part Number: M38510/20909BKA
• Manufacturer: E2V

Specifications of M38510/20909BKA

• Lead Free Status / RoHS Status: Supplier Unconfirmed

4.12 Programming procedure for circuit F. The waveforms on figure 5F, the programming characteristics in
table IVF and the following procedures shall apply for programming the device:
a. Connect the device in the electrical configuration for programming.
b. Raise V
c. Address the PROM with the binary address of the selected word to be programmed.
d. Disable the chip by applying V
e. Apply the V
f. Apply only one V
g. Other bits in the same word may be programmed sequentially by applying V
h. Repeat 4.12c through 4.12g for all other bits to be programmed.
i. Enable the chip by applying V
j. For classes S and B devices, if any bit does not verify as programmed, it shall be considered a
Address inputs are TTL compatible.
The chip enable inputs are TTL compatible.
before increasing the voltage on the output pin, the programming pin’s voltage pulse shall precede the
output pin’s programming pulse by T
(see figure 5F).
be programmed one output at a time since internal decoding circuitry is capable of sinking only one unit of
programming current at a time. Note that the PROM is supplied with fuses generating a high-level logic
output. Programming a fuse will cause the output to go to a low level logic in the verify mode.
be programmed.
Verification may check for a low output by requiring the device to sink 12 mA at V
at V
programming reject.
CC
= 6.2 V at T
CC
to 5.5 volts.
PP
pulse to the programming pin ( CE
OUT
C
= 25°C.
pulse with duration of t
IL
IH
to the CE inputs and V
to the CE inputs and V
D1
MIL-M-38510/209E
and leave after the output pin’s programming pulse by T
P
to the output selected for programming. The outputs shall
59
2
). In order to insure that the output transistor is off
IH
IL
to the CE inputs, and verify the program.
to the CE inputs.
OUT
pulses to each output to
CC
= 4.2 V and 0.2 mA
D2