- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372534 > X4165V8I (INTERSIL CORP) CPU Supervisor with 16K EEPROM PDF資料下載
參數(shù)資料
| 型號(hào)： | X4165V8I |
| 廠商： | INTERSIL CORP |
| 元件分類： | 電源管理 |
| 英文描述： | CPU Supervisor with 16K EEPROM |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8 |
| 封裝： | PLASTIC, MO-153AC, TSSOP-8 |
| 文件頁數(shù)： | 15/23頁 |
| 文件大?。?/td> | 118K |
| 代理商： | X4165V8I |
X46402
Characteristics subject to change without notice.
15 of 23
Note on Read/Write Operations
Password Protected
(None of the array to
all of the array)
Non- Password Protected
(All of the array to
none of the array)
0000h
1FFFh
P
R
N
R
Notes:
Using a “password read” or a “password write” to a non-password protected area is acceptable, because the password is received and
accepted prior to an address transmission. It is assumed that access to non-password protected areas is uncontrolled, so either method
should work.
Using a “no-password read” or a “no-password write” on a password protected area would not work. Trying to access a password protected
area without the password match causes the device to return a NACK after the address.
A password sequential read that starts in the password protected area can continue into and through the non-password protected area. It
will not “wrap” back to address ’0’.
A no-password sequential read can only start in the non-password protected area and cannot “wrap” back into the protected area.
CHANGE PASSWORD COMMAND
When changing a password, the Change Password
command is sent to the device. The old password fol-
lows. When the old password is accepted (as indicated
by the ACK Polling Command sequence), the new
password is sent to the device twice, following two
bytes of zero. A stop bit initiates the store of the new
password. To be successful in the password change
operation the first and second transmission of the new
password must match and there must be exactly 16
password bytes. If this is not the case, the operation is
aborted and the password remains unchanged.
PASSWORDS
The sequence in Figure 17 shows how to change (pro-
gram) the passwords. The programming of passwords
is done twice prior to the nonvolatile write cycle in order
to verify that the new password is consistent. After the
eight bytes are entered in the second pass, a compari-
son takes place. A mismatch will cause the part to
ignore the change command and enter into the standby
mode.
There are two ways to determine whether the operation
was completed successfully. The Data ACK polling
method can determine if a password has been loaded
correctly, however the data ACK command must be
issued less than 2ms after the stop bit. After this time, it
cannot be determined if the password has been loaded
correctly, without trying the new password. To deter-
mine if the new password has been loaded correctly the
data ACK polling command is issued immediately fol-
lowing the stop bit. If it returns an ACK, then the two
passes of the new password entry do not match. If it
returns a “no ACK” then the passwords match and a
high voltage cycle is in progress. The high voltage cycle
is complete when a subsequent data ACK command
returns an “ACK”.
An easier way to determine that the password has been
changed correctly is to read the ACK bit following the
second writing of the new password. If the device
returns an ACK, the password is good. A No ACK indi-
cates something went wrong. If there was an error, the
password remains unchanged.
There is no way to read any of the passwords.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X4165V8I-2.7 | CPU Supervisor with 16K EEPROM |
| X4283(中文) | RTC Module With CPU Supervisor |
| X4283 | RTC Module With CPU Supervisor |
| X4323 | RTC Module With CPU Supervisor |
| X4325 | RTC Module With CPU Supervisor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X4165V8I-2.7 | 功能描述:IC SUPERVISOR CPU 16K EE 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X4165V8I-2.7A | 功能描述:IC SUPERVISOR CPU 16K EE 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X4165V8I-4.5A | 功能描述:IC SUPERVISOR CPU 16K EE 8-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時(shí):最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X41D255 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| X41K1 | 制造商:ABB Low Voltage Products and Systems 功能描述:CCT,1KVA,460V,SINGLE |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。