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M27V402-150N1TR 数据表(PDF) 4 Page - STMicroelectronics

部件名 M27V402-150N1TR
功能描述  4 Mbit (512Kb x 8) Low Voltage OTP EPROM
Download  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M27V402-150N1TR 数据表(HTML) 4 Page - STMicroelectronics

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M27V405
4/13
Two Line Output Control
Because OTP EPROMs are usually used in larger
memory arrays, this product features a 2 line con-
trol function which accommodates the use of mul-
tiple memory connection. The two line control
function allows:
a. the lowest possible memory power dissipation,
b. complete assurance that output bus contention
will not occur.
For the most efficient use of these two control
lines, E should be decoded and used as the prima-
ry device selecting function, while G should be
made a common connection to all devices in the
array and connected to the READ line from the
system control bus. This ensures that all deselect-
ed memory devices are in their low power standby
mode and that the output pins are only active
when data is required from a particular memory
device.
System Considerations
The power switching characteristics of Advanced
CMOS OTP EPROMs require careful decoupling
of the devices. The supply current, ICC, has three
segments that are of interest to the system design-
er: the standby current level, the active current lev-
el, and transient current peaks that are produced
Table 5. AC Measurement Conditions
High Speed
Standard
Input Rise and Fall Times
≤ 10ns
≤ 20ns
Input Pulse Voltages
0 to 3V
0.4V to 2.4V
Input and Output Timing Ref. Voltages
1.5V
0.8V and 2V
Figure 3. AC Testing Input Output Waveform
AI01822
3V
High Speed
0V
1.5V
2.4V
Standard
0.4V
2.0V
0.8V
Figure 4. AC Testing Load Circuit
AI01823B
1.3V
OUT
CL
CL = 30pF for High Speed
CL = 100pF for Standard
CL includes JIG capacitance
3.3k
1N914
DEVICE
UNDER
TEST
Table 6. Capacitance (1) (TA = 25 °C, f = 1 MHz)
Note: Sampled only, not 100% tested.
Symbol
Parameter
Test Condition
Min
Max
Unit
CIN
Input Capacitance
VIN = 0V
6pF
COUT
Output Capacitance
VOUT = 0V
12
pF


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