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參數(shù)資料
| 型號： | MAX6889ETJ+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | EEPROM-Programmable, Octal/Hex/Quad, Power-Supply Sequencers/Supervisors |
| 中文描述： | 8-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC32 |
| 封裝： | 5 X 5 MM, TQFN-32 |
| 文件頁數(shù)： | 29/40頁 |
| 文件大?。?/td> | 255K |
| 代理商： | MAX6889ETJ+ |
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MAX6889/MAX6890/MAX6891MAX6889/MAX6890/MAX6891MAX6889/MAX6890/MAX6891MAX6889/MAX6890/MAX6891MAX6889/MAX6890/MAX6891MAX6889/MAX6890/MAX6891MAX6889/MAX6890/MAX6891
EEPROM-Programmable, Octal/Hex/Quad,
Power-Supply Sequencers/Supervisors
______________________________________________________________________________________
35
WRITE BYTE FORMAT
S
ADDRESS
7 bits
SEND BYTE FORMAT
WR
ACK
DATA
8 bits
ACK
P
Data Byte–presets the
internal address pointer
or represents a command.
BLOCK WRITE FORMAT
S
ADDRESS
WR
ACK
COMMAND
ACK
BYTE
COUNT= N
ACK
DATA BYTE
1
ACK
DATA BYTE
...
ACK
DATA BYTE
N
ACK
P
7 bits
C0h
8 bits
Slave Address–
equivalent to chip-
select line of a 3-
wire interface.
Command Byte–
prepares device
for block
write operation.
Data Byte–first data goes into the address preset
with a previous "Set Address" and the following data
in the following locations.
BLOCK READ FORMAT
S
ADDRESS
WR
ACK
COMMAND
ACK
SR
ADDRESS
WR
ACK
8 bits
BYTE
COUNT = N
ACK
DATA BYTE
1
ACK
DATA BYTE
...
ACK
DATA BYTE
N
ACK
P
7 bits
C1h
7 bits
8 bits
Slave Address–
equivalent to chip-
select line of a 3-
wire interface.
Command Byte–
prepares device
for block
operation.
Slave Address–
equivalent to chip-
select line of a 3-
wire interface.
Data Byte–data comes from the address set by a
previous "send byte".
S = Start condition.
P = Stop condition.
Shaded = Slave transmission.
SR = Repeated start condition.
Slave Address–
equivalent to chip-
select line of a 3-
wire interface.
S
ADDRESS
WR
ACK
COMMAND
ACK
DATA
ACK
P
7 bits
8 bits
Slave Address–
equivalent to chip-
select line of a 3-
wire interface.
Command Byte–
selects register
EEPROM location you
are writing to.
Data Byte–data goes into the
register (or EEPROM location)
set by the command byte.
0
1
0
READ BYTE FORMAT
S
ADDRESS
WR
ACK
DATA
ACK
SR
ACK
DATA
ACK
P
7 bits
8 bits
Slave Address–
equivalent to chip-
select line of a
3-wire interface.
Data Byte—presets
the internal address
pointer.
Data Byte–data read
from the preset register
(or EEPROM) address.
0
ADDRESS
WR
7 bits
1
Slave Address—
equivalent to chip-
select line of a
3-wire interface.
Figure 8. SMBus/I2C Protocols
Applications Information
Configuration Download at Power-up
The configuration of the MAX6889/MAX6890/MAX6891
(undervoltage thresholds, PO_ timeout periods, watch-
dog behavior, programmable output conditions and
configurations, etc.) depends on the contents of the
EEPROM. The EEPROM is comprised of buffered latch-
es that store the configuration. The local volatile memo-
ry latches lose their contents at power-down. Therefore,
at power-up, the device configuration must be restored
by downloading the contents of the EEPROM (non-
volatile memory) to the local latches. This download
occurs in a number of steps:
1) Programmable outputs go high impedance with no
power applied to the device.
2) When VCC exceeds 1V, all programmable outputs are
weakly pulled to GND through a 10A current sink.
3) When VCC exceeds UVLO, the configuration
EEPROM starts to download its contents to the
volatile configuration registers. The programmable
outputs assume their programmed conditional out-
put state when VCC exceeds UVLO.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6889ETJ+ | 功能描述:監(jiān)控電路 EEPROM-Prog Octal Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889ETJ+T | 功能描述:監(jiān)控電路 EEPROM-Prog Octal Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889ETJ-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889EVCMAXQ | 功能描述:監(jiān)控電路 EEPROM-Programmable Octal/Hex/Quad Power-Supply Sequencers/Supervisors RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6889EVCMAXQU | 功能描述:監(jiān)控電路 Evaluation Kit/Evaluation System for the MAX6889 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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