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参数资料
| 型号： | YWW7640AE |
| 厂商： | IC MICROSYSTEMS Sdn. Bhd. |
| 英文描述： | Secure SerialFlash |
| 中文描述： | 安全SerialFlash |
| 文件页数： | 12/14页 |
| 文件大小： | 333K |
| 代理商： | YWW7640AE |
X76F400
Characteristics subject to change without notice.
7 of 14
REV 1.0 7/5/00
www.icmic.com
PASSWORDS
Passwords are changed by sending the “change read
password” or “change write password” commands in a
normal sector write operation. A full 8 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 standby 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 power is 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
MSB
1
LSB
MSB LSB
MSB
2
3
10
0
00
11
1
0
1
0000
0
1
1 0
1
0
1
1 0
相关PDF资料 |
PDF描述 |
|---|---|
| YWW7640AF | Secure SerialFlash |
| YWW7640I | Secure SerialFlash |
| YWW7640 | Secure SerialFlash |
| 0009502242 | 24 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR, CRIMP |
| 0009503111 | 11 CONTACT(S), FEMALE, TWO PART BOARD CONNECTOR, CRIMP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| YWW7640AF | 制造商:ICMIC 制造商全称:IC MICROSYSTEMS 功能描述:Secure SerialFlash |
| YWW7640I | 制造商:ICMIC 制造商全称:IC MICROSYSTEMS 功能描述:Secure SerialFlash |
| YWXC1020U02 | 制造商:Panasonic Industrial Company 功能描述:COIL PANASONIC |
| YWYS30467 | 制造商:Panasonic Industrial Company 功能描述:FILTER |
| YWYS34468T | 制造商:Panasonic Industrial Company 功能描述:COIL |
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