M38510/21002BJA E2V, M38510/21002BJA Datasheet - Page 12

• 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 devices:
4.14 Programming procedures for circuit G. The programming characteristics on table IVG and the following
a. Connect the device in the electrical configuration for programming. The waveforms on figure 5G and
b. Select the desired word by applying high or low levels to the appropriate address inputs. Disable the
c. Increase V
d. Select the output where a logical high is desired by raising that output voltage to V
e. Enable the device by taking the chip Enable(s) to a low level. This is done with a pulse PWE for 10 µs.
f. Verify that the bit has been programmed by first removing the programming voltage from the output and
g. If the device is not to be tested for V
h. Repeat 4.14b through 4.14f for each bit to be programmed to a high level. If the procedure is performed
i. If any bit does not verify as programmed, it shall be considered a programming reject.
the programming characteristics of table IVG shall apply to these procedures.
device by applying a high level to one or more ‘active low’ chip Enable inputs. NOTE: Address and
Enable inputs must be driven with TTL logic levels during programming and verification.
V
programming voltage, it must be capable of supplying 750 mA at 11.0 V.
Limit the slew rates to I
V
since the internal circuits can only supply programming current to one bit at a time. Outputs not being
programmed must be left open or connected to a high impedance source of 20 kΩ minimum (remember
that the outputs of the device are disabled at this time).
The 10 µs duration refers to the time that the circuit (device) is enabled. Normal input levels are used
and rise and fall times are not critical.
then reducing V
During verification, the loading of the output must be within specified I
the verification of step 4.14f is to be performed at a V
verification, must be at least 2.0 V. The 4 V V
temperature range.
on an automatic programmer, the duty cycle of VCC at the programming voltage must be limited to a
maximum of 25 percent. This is necessary to minimize device junction temperatures. After all selected
bits are programmed, the entire contents of the memory should be verified.
CC
CC
is the source of the current required to program the fuse as well as the I
increase to V
CC
from nominal to V
CC
CCP
to 5.0 V (±0.25 V). The device must be Enabled to sense the state of the outputs.
, but must not precede it. It is critical that only one output at a time be programmed
RR
(1.0 to 10.0 V/µs). This voltage change may occur simultaneously with the
CCP
(10.5 ±0.5 V) with a slew rate limit of I
OH
MIL-M-38510/210E
over the entire temperature range subsequent to programming,
CC
12
verification assures minimum V
CC
level of 4.0 V (±0.2 V). V
OL
and I
RR
(1.0 to 10.0 V/µs). Since
CC
OH
for the device at the
limits.
OH
OH
OP
levels over the entire
, during the 4 V
(10.5 ±0.5 V).