M27W401-80XN6TR STMicroelectronics, M27W401-80XN6TR Datasheet - Page 4

• Manufacturer Part Number: M27W401-80XN6TR
• Description: 4 Mbit 512Kb x 8 Low Voltage UV EPROM and OTP EPROM
• Manufacturer: STMicroelectronics

M27W402
Table 5. AC Measurement Conditions
Figure 3. AC Testing Input Output Waveform
Table 6. Capacitance
Note: Sampled only, not 100% tested.
DEVICE OPERATION
The operation modes of the M27W402 are listed in
the Operating Modes table. A single power supply
is required in the read mode. All inputs are TTL
levels except for V
Signature.
Read Mode
The M27W402 has two control functions, both of
which must be logically active in order to obtain
data at the outputs. Chip Enable (E) is the power
control and should be used for device selection.
Output Enable (G) is the output control and should
be used to gate data to the output pins, indepen-
dent of device selection. Assuming that the ad-
4/15
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
Symbol
High Speed
Standard
C
C
2.4V
0.4V
OUT
IN
3V
0V
Input Capacitance
Output Capacitance
PP
and 12V on A9 for Electronic
(1)
(T
Parameter
A
= 25 C, f = 1 MHz)
1.5V
2.0V
0.8V
AI01822
High Speed
0 to 3V
1.5V
Figure 4. AC Testing Load Circuit
dresses are stable, the address access time
(t
(t
of t
E has been low and the addresses have been sta-
ble for at least t
Standby Mode
The M27W402 has a standby mode which reduc-
es the supply current from 15mA to 15 A with low
voltage operation V
Characteristics table for details. The M27W402 is
placed in the standby mode by applying a CMOS
high signal to the E input. When in the standby
mode, the outputs are in a high impedance state,
independent of the G input.
10ns
Test Condition
AVQV
ELQV
V
GLQV
V
OUT
C L = 30pF for High Speed
C L = 100pF for Standard
C L includes JIG capacitance
IN
DEVICE
UNDER
). Data is available at the output after a delay
) is equal to the delay from E to output
TEST
= 0V
= 0V
from the falling edge of G, assuming that
AVQV
CC
-t
1.3V
GLQV
Min
3.6V, see Read Mode DC
.
1N914
3.3k
0.4V to 2.4V
0.8V and 2V
C L
Standard
20ns
Max
12
6
OUT
AI01823B
Unit
pF
pF