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M27V402-200K6TR Folha de dados(PDF) 3 Page - STMicroelectronics

Nome de Peças M27V402-200K6TR
Descrição Electrónicos  4 Mbit (512Kb x 8) Low Voltage OTP EPROM
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
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M27V405
The M27V405 is pin compatible with the industry
standard 4 Mbit, single voltage Flash Memory. It
can be considered as a Flash Low Cost solution
for production quantities.
The M27V405 can also be operated as a standard
4 Mbit OTP EPROM (similar to M27C405) with a
5V power supply. The M27V405 is offered in
PLCC32 and TSOP32 (12 x 20 mm) packages.
DEVICE OPERATION
The modes of operations of the M27V405 are list-
ed in the Operating Modes table. A single power
supply is required in the read mode. All inputs are
TTL levels except for Vpp and 12V on A9 for Elec-
tronic Signature.
Read Mode
The M27V405 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 M27V405 has a standby mode which reduces
the active current from 15mA to 20µA with low volt-
age operation VCC ≤ 3.6V , see Read Mode DC
Characteristics Table for details. The M27V405 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.
Table 3. Operating Modes
Note: X = VIH or VIL, VID = 12V ± 0.5V.
Table 4. Electronic Signature
Mode
E
G
A9
VPP
Q0-Q7
Read
VIL
VIL
X
VCC or VSS
Data Out
Output Disable
VIL
VIH
X
VCC or VSS
Hi-Z
Program
VIL Pulse
VIH
X
VPP
Data In
Verify
VIH
VIL
X
VPP
Data Out
Program Inhibit
VIH
VIH
X
VPP
Hi-Z
Standby
VIH
XX
VCC or VSS
Hi-Z
Electronic Signature
VIL
VIL
VID
VCC
Codes
Identifier
A0
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Hex Data
Manufacturer’s Code
VIL
00100000
20h
Device Code
VIH
10110100
B4h


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