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參數(shù)資料
| 型號(hào)： | M27V402-180N1TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Quadruple 2-Input Positive-AND Gates 14-SOIC 0 to 70 |
| 中文描述： | 4兆位512KB的× 8 EPROM的低電壓檢察官辦公室 |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 120K |
| 代理商： | M27V402-180N1TR |
3/13
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 V
pp
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
(t
AVQV
) is equal to the delay from E to output
(t
ELQV
). Data is available at the output after a delay
of t
GLQV
from the falling edge of G, assuming that
E has been low and the addresses have been sta-
ble for at least t
AVQV
-t
GLQV
.
Standby Mode
The M27V405 has a standby mode which reduces
the active current from 15mA to 20μA with low volt-
age operation V
CC
≤
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 = V
IH
or V
IL
, V
ID
= 12V ± 0.5V.
Table 4. Electronic Signature
Mode
E
G
A9
V
PP
Q0-Q7
Read
V
IL
V
IL
X
V
CC
or V
SS
Data Out
Output Disable
V
IL
V
IH
X
V
CC
or V
SS
Hi-Z
Program
V
IL
Pulse
V
IH
X
V
PP
Data In
Verify
V
IH
V
IL
X
V
PP
Data Out
Program Inhibit
V
IH
V
IH
X
V
PP
Hi-Z
Standby
V
IH
X
X
V
CC
or V
SS
Hi-Z
Electronic Signature
V
IL
V
IL
V
ID
V
CC
Codes
Identifier
A0
Q7
Q6
Q5
Q4
Q3
Q2
Q1
Q0
Hex Data
Manufacturer’s Code
V
IL
0
0
1
0
0
0
0
0
20h
Device Code
V
IH
1
0
1
1
0
1
0
0
B4h
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