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參數(shù)資料
| 型號(hào)： | x76f400 |
| 英文描述： | Secure SerialFlash(密碼訪問加密串行EEPROM) |
| 中文描述： | 安全SerialFlash（密碼訪問加密串行EEPROM的） |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 78K |
| 代理商： | X76F400 |
X76F400
7
PASSWORDS
Passwords are changed by sending the "change read
password" or "change write password" commands in a
normal sector write operation. A full eight bytes
containing the new password must be sent, following
successful transmission of the current write password
and a valid password ACK response. The user can use a
repeated ACK Polling command to check that a new
password has been written correctly. An ACK indicates
that the new password is valid.
There is no way to read any of the passwords.
RESPONSE TO RESET (DEFAULT = 19 40 AA 55)
The ISO Response to reset is controlled by the RST and
CLK pins. When RST is pulsed high during a clock pulse,
the device will output 32 bits of data, one bit per clock,
and it resets to the standy state. This conforms to the ISO
standard for “synchronous response to reset”. The part
must not be in a write cycle for the response to reset to
occur.
After initiating a nonvolatile write cycle the RST pin must
not be pulsed until the nonvolatile write cycle is complete.
If not, the ISO response will not be activated. If the RST
is pulsed HIGH and the CLK is within the RST pulse
(meet the t
NOL
spec.) in the middle of an ISO transaction,
it will output the 32 bit sequence again (starting at bit 0).
Otherwise, this aborts the ISO operation and the part
returns to standby state. If the RST is pulsed HIGH and
the CLK is outside the RST pulse (in the middle of an
ISO transaction), this aborts the ISO operation and the
part returns to standby state.
If there is power interrupted during the Response to
Reset, the response to reset will be aborted and the part
will return to the standby state. A Response to Reset is
not available during a nonvolatile write cycle.
Figure 7. Response to RESET (RST)
SCK
SO
RST
Byte
0
MSB
LSB
LSB
MSB
1
LSB
MSB
LSB
MSB
2
3
1 0 0
0 0
1 1
1
0
0
1
0 0 0 0 0
0
0
0
0
1
1 0
1
1
1
0
0
0
1
1
0
ABSOLUTE MAXIMUM RATINGS*
Temperature under Bias ..................... –65°C to +135°C
Storage Temperature ..........................–65°C to +150°C
Voltage on any Pin with
Respect to V
SS
.......................................–1V to +7V
D.C. Output Current..................................................5mA
Lead Temperature
(Soldering, 10 seconds)..................................300°C
*COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation of
the device at these or any other conditions above those
listed in the operational sections of this specification is
not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X76F640(中文) | Secure SerialFlash(5種64位密碼保護(hù)；對(duì)復(fù)位的同步響應(yīng)；二線串口；允許任意數(shù)目的器件共享同一總線) |
| X7AH-01C | NON-ISOLATED DC/DC CONVERTERS 3 V-3.6 V Input 12 V/0.8 A & 15 V/0.6 A Output |
| X7AH-01FXX0 | NON-ISOLATED DC/DC CONVERTERS 3.0 V-5.5 V Input 12 V/0.8 A & 15 V/0.6 A Output |
| X7AH-01FXXN | NON-ISOLATED DC/DC CONVERTERS 3.0V-5.5V Input -5V/1A & -12V/0.5A Output |
| X7AH-01H1A0 | NON-ISOLATED DC/DC CONVERTER 4.5V-32V Input 1.2V-3.3V/1A Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X76F400H | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Secure SerialFlash |
| X76F400H-2.5 | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Secure SerialFlash |
| X76F400HI | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Secure SerialFlash |
| X76F400HI-2.5 | 制造商:ICMIC 制造商全稱:IC MICROSYSTEMS 功能描述:Secure SerialFlash |
| X76F400P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial EEPROM |
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