M38510/21002BJA E2V, M38510/21002BJA Datasheet - Page 10

• Manufacturer Part Number: M38510/21002BJA
• Manufacturer: E2V

Specifications of M38510/21002BJA

• Lead Free Status / RoHS Status: Supplier Unconfirmed

procedures shall be used for programming the device.
4.11 Programming procedures for circuit D. The programming characteristics on table IVD, and the following
m. If T
n. After a delay of TD
o. Repeat steps 4.10d through 4.10k until all required addresses are programmed.
p. To verify the program keep V
h. Return the CE
i. Wait TD
j. Wait TD
k. A properly blown fuse will read VOL and unblown fuse will read VOH.
l. If T
a. Connect the device in the electrical configuration for programming. The waveforms on figure 5D and
b. Select the word to be programmed by applying the appropriate voltages to the address pins as well as
c. Apply the proper power, V
d. Verify that the bit to be programmed is in the “0” logic state.
e. Enable the chip for programming by application of the chip enable voltage, V
f. Apply I
g. Verify that the programmed bit is in the “1” logic state. Lower V
Note: The PROM is supplied with fuses generating a low-level logic output. Programming a fuse will
cause the output to go to a high-level logic in the verify mode.
h. Lower V
i. If the bit verifies as not having been programmed at V
level and unblown fuse shall remain in the high level.
the programming characteristics of table IVD shall apply to these procedures.
the required voltages to chip enable pins to select the device.
open. Only one output may be programmed at a time. During the rise of the current ramp, the required
current will be achieved to program the junction. As programming occurs a drop in voltage can be
sensed at the output of the device. Upon detection of V
shut off.
sequence up to 15 times until the bit is programmed. If after 16 programming attempts, the bit does not
program, then the device shall be considered a reject.
1. If the fuse is blown, go to n.
2. If the fuse is unblown, go to 1.
(pin 20). CE
P
P
is less than 30 µs, increment T
is ≥ 30 µs, the device is a reject.
OP
5
6
CC
and lower V
and lower CE
programming current ramp to the output to be programmed. The other outputs shall be left
to 0 V. The power supply duty cycle shall be equal to or less than 50 percent.
2
and CE
2
to V
7
, select the next output or address to be programmed.
IH
CC
.
3
should be left high.
2
to V
to V
CC
CCV
= 6.5 V, GND = 0 V.
CC
IL
.
for the duration to T
pin at V
P
by 5 µs and go to e. If T
MIL-M-38510/210E
CCV
. Apply V
10
V
.
IL
CC
to CE
PS
= 6.5 V, then repeat the programming ramp
, the current shall be held for t
2
P
. The programmed fuse will go to the low
P(CE1)
is ≥ 5 µs go to m.
to 0 V and read the output.
P(CE1)
= 21.0 V to CE
hap
and then
1