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參數(shù)資料
| 型號： | NT68P61A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 8-Bit Microcontroller for Monitor (24K OTP ROM Type) |
| 中文描述： | 8位微控制器的監(jiān)視器（足金檢察官辦公室光盤形式） |
| 文件頁數(shù)： | 12/48頁 |
| 文件大?。?/td> | 1057K |
| 代理商： | NT68P61A |
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NT68P61A
12
OTP ROM Mega cell
Mode Selection
RESET
= 12.75V,
OSCI = V
IL
,
P16 = V
IH
, DAC0 = V
IL
Mode [0..2]
Mode
CE
OE
VPP
DB0 -
DB7
not VPP
- - -
Normal Operating
-
-
-
-
VPP
000
Output Disable
-
V
IH
-
high-Z
VPP
000
Program
V
IH
V
IH
VPP
data in
VPP
000
Program Verify
V
IH
V
IL
VPP
data out
VPP
000
Program Inhibit (Standby)
V
IL
-
VPP
high-Z
VPP
001
Security (Program)
V
IH
-
VPP
data in
VPP
010
Word-line Stress
-
-
VPP
-
VPP
011
Bit-line Stress
-
-
VPP
"0"
VPP
100
OTP Row (after pkg)
V
IH
V
IH
VPP
data in
VPP
101
OTP Column (after pkg)
V
IH
V
IH
VPP
data in
* The security byte is at address $0000.
READ
NT68P61A's OTP ROM mega cell has 2 control pins. CE
(Chip Enable) controls the operation power and is used
for device selection. The
OE
(Output Enable) controls
the output buffers.
OUTPUT DISABLE
If
OE
= V
IH
, the outputs will be in a high impedance
state. Two or more ROMs can be connected together on
a common bus.
STANDBY
By applying a low power level to the CE input, the chip
enters STANDBY reducing the operating current to
100
μ
A.
PROGRAM
Initially, all bits are in "1" state which is the erased state.
The program operation is to introduce "0" data into the
desired bit locations by electrical programming. When
the VPP input is at 12.75V and CE is at V
IH
, the chip
enters the PROGRAMMING mode.
PROGRAM VERIFY
The VERIFY mode is to check if the desired data is
correctly programmed on the programmed bit. The
VERIFY is accomplished with CE at V
IH
, VPP input is at
12.75V, and
OE
= V
IL
.
PROGRAM INHIBIT
Using this mode, programming of two or more OTP
ROMs in parallel with different data is accomplished. All
inputs except for CE and
OE
may be commonly
connected, and a TTL high level program pulse is
applied to the CE of the desired device only and TTL
high level signal is applied to the other devices.
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