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M27V512-200F6TR Datasheet Download - STMicroelectronics

Номер произв M27V512-200F6TR
Описание 512 Kbit 64Kb x8 Low Voltage UV EPROM and OTP EPROM
Производители STMicroelectronics
логотип STMicroelectronics логотип 



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M27V512-200F6TR Даташит, Описание, Даташиты
M27V512
512 Kbit (64Kb x8) Low Voltage UV EPROM and OTP EPROM
s LOW VOLTAGE READ OPERATION:
3V to 3.6V
s FAST ACCESS TIME: 100ns
s LOW POWER CONSUMPTION:
– Active Current 10mA at 5MHz
– Standby Current 10µA
s PROGRAMMING VOLTAGE: 12.75V ± 0.25V
s PROGRAMMING TIME: 100µs/byte (typical)
s ELECTRONIC SIGNATURE
– Manufacturer Code: 20h
– Device Code: 3Dh
DESCRIPTION
The M27V512 is a low voltage 512 Kbit EPROM
offered in the two ranges UV (ultra viloet erase)
and OTP (one time programmable). It is ideally
suited for microprocessor systems and is orga-
nized as 65,536 by 8 bits.
The M27V512 operates in the read mode with a
supply voltage as low as 3V. The decrease in op-
erating power allows either a reduction of the size
of the battery or an increase in the time between
battery recharges.
The FDIP28W (window ceramic frit-seal package)
has transparent lid which allows the user to ex-
pose the chip to ultraviolet light to erase the bit pat-
tern. A new pattern can then be written to the
device by following the programming procedure.
For applications where the content is programmed
only one time and erasure is not required, the
M27V512 is offered in PDIP28, PLCC32 and
TSOP28 (8 x 13.4 mm) packages.
Table 1. Signal Names
A0-A15
Address Inputs
Q0-Q7
Data Outputs
E Chip Enable
GVPP
Output Enable
VCC Supply Voltage
VSS Ground
28
1
FDIP28W (F)
28
1
PDIP28 (B)
PLCC32 (K)
TSOP28 (N)
8 x 13.4mm
Figure 1. Logic Diagram
VCC
16
A0-A15
8
Q0-Q7
E
GVPP
M27V512
VSS
AI00732B
May 1998
1/16







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M27V512-200F6TR Даташит, Описание, Даташиты
M27V512
Figure 2A. DIP Pin Connections
Figure 2B. LCC Pin Connections
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
Q0
Q1
Q2
VSS
1 28
2 27
3 26
4 25
5 24
6 23
7 22
M27V512
8 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC
A14
A13
A8
A9
A11
GVPP
A10
E
Q7
Q6
Q5
Q4
Q3
AI01907
Figure 2C. TSOP Pin Connections
GVPP
A11
A9
A8
A13
A14
VCC
A15
A12
A7
A6
A5
A4
A3
22 21
28 15
M27V512
1 14
78
A10
E
Q7
Q6
Q5
Q4
Q3
VSS
Q2
Q1
Q0
A0
A1
A2
AI00734B
2/16
A6
A5
A4
A3
A2 9
A1
A0
NC
Q0
1 32
M27V512
17
A8
A9
A11
NC
25 GVPP
A10
E
Q7
Q6
AI00733B
Warning: NC = Not Connected, DU = Don’t Use
DEVICE OPERATION
The operating modes of the M27V512 are listed in
the Operating Modes table. A single power supply
is required in the read mode. All inputs are TTL
levels except for GVPP and 12V on A9 for Elec-
tronic Signature.
Read Mode
The M27V512 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-
dresses are stable, the address access time
(tAVQV) is equal to the delay from E to output
(tELQV). Data is available at the output after a delay
of tGLQV from the falling edge of G, assuming that
E has been low and the addresses have been sta-
ble for at least tAVQV-tGLQV.
Standby Mode
The M27V512 has a standby mode which reduces
the supply current from 10mA to 10µA with low
voltage operation VCC 3.6V, see Read Mode DC
Characteristics table for details.The M27V512 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 GVPP input.







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M27V512-200F6TR Даташит, Описание, Даташиты
M27V512
Table 2. Absolute Maximum Ratings (1)
Symbol
Parameter
Value
Unit
TA Ambient Operating Temperature (3)
–40 to 125
°C
TBIAS
Temperature Under Bias
–50 to 125
°C
TSTG
Storage Temperature
–65 to 150
°C
VIO (2)
Input or Output Voltage (except A9)
–2 to 7
V
VCC Supply Voltage
–2 to 7
V
VA9 (2)
A9 Voltage
–2 to 13.5
V
VPP Program Supply Voltage
–2 to 14
V
Note: 1. Except for the rating ”Operating Temperature Range”, stresses above those listed in the Table ”Absolute Maximum Ratings” may
cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions
above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating condi-
tions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant qua-
lity documents.
2. Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than 20ns. Maximum DC
voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns.
3. Depends on range.
Table 3. Operating Modes
Mode
Read
Output Disable
Program
Program Inhibit
Standby
Electronic Signature
Note: X = VIH or VIL, VID = 12V ± 0.5V.
E
VIL
VIL
VIL Pulse
VIH
VIH
VIL
GVPP
VIL
VIH
VPP
VPP
X
VIL
A9 Q0-Q7
X Data Out
X Hi-Z
X Data In
X Hi-Z
X Hi-Z
VID Codes
Table 4. Electronic Signature
Ide ntifie r
A0 Q7 Q6 Q5 Q4 Q3 Q2 Q1 Q0 Hex Data
Manufacturer’s Code
VIL
0
0
1
0
0
0
0
0
20h
Device Code
VIH 0 0 1 1 1 1 0 1
3Dh
Two Line Output Control
Because EPROMs are usually used in larger
memory arrays, the 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.
3/16










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