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參數(shù)資料
| 型號： | MAX6885ETP+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | EEPROM-Programmable, Hex, Power-Supply Supervisors with an ADC |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC20 |
| 封裝： | 5 X 5 MM, 0.80 MM PITCH, MO-220WHHC, QFN-20 |
| 文件頁數(shù)： | 19/34頁 |
| 文件大?。?/td> | 310K |
| 代理商： | MAX6885ETP+ |
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SMBus/I2C-Compatible Serial Interface
The MAX6884/MAX6885 feature an I2C/SMBus-compati-
ble 2-wire serial interface consisting of a serial data line
(SDA) and a serial clock line (SCL). SDA and SCL facili-
tate bidirectional communication between the
MAX6884/MAX6885 and the master device at clock
rates up to 400kHz. Figure 6 shows the 2-wire interface
timing diagram. The MAX6884/MAX6885 are transmit/
receive slave-only devices, relying upon a master
device to generate a clock signal. The master device
(typically a microcontroller) initiates data transfer on the
bus and generates SCL to permit that transfer.
A master device communicates to the MAX6884/
MAX6885 by transmitting the proper address followed by
command and/or data words. Each transmit sequence is
framed by a START (S) or REPEATED START (SR) condi-
tion and a STOP (P) condition. Each word transmitted
over the bus is 8 bits long and is always followed by an
acknowledge pulse.
SCL is a logic input, while SDA is an open-drain
input/output. SCL and SDA both require external pullup
resistors to generate the logic-high voltage. Use 4.7k
resistors for most applications.
Bit Transfer
Each clock pulse transfers one data bit. The data on
SDA must remain stable while SCL is high (see Figure
7), otherwise the MAX6884/MAX6885 register a START
or STOP condition (see Figure 8) from the master. SDA
and SCL idle high when the bus is not busy.
MAX6884/MAX6885
EEPROM-Programmable, Hex
Power-Supply Supervisory Circuits
26
______________________________________________________________________________________
STOP
CONDITION
REPEATED START
CONDITION
START
CONDITION
tHIGH
tLOW
tR
tF
tSU:DAT
tSU:STA
tSU:STO
tHD:STA
tBUF
tHD:STA
tHD:DAT
SCL
SDA
START
CONDITION
Figure 6. Serial Interface Timing
DATA LINE STABLE,
DATA VALID
SDA
SCL
CHANGE OF
DATA ALLOWED
Figure 7. Bit Transfer
P
S
START
CONDITION
SDA
SCL
STOP
CONDITION
Figure 8. Start and Stop Conditions
相關(guān)PDF資料 |
PDF描述 |
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| MAX6886ETP+ | Pin-Selectable, Hex Power-Supply Supervisory Circuit |
| MAX6886ETP+T | Pin-Selectable, Hex Power-Supply Supervisory Circuit |
| MAX6887AETE+ | Hex/Quad, Power-Supply Supervisory Circuits |
| MAX6887AETE+T | Hex/Quad, Power-Supply Supervisory Circuits |
| MAX6887BETE+ | Hex/Quad, Power-Supply Supervisory Circuits |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6885ETP+ | 功能描述:監(jiān)控電路 EEPROM-Prog Hex 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 |
| MAX6885ETP+T | 功能描述:監(jiān)控電路 EEPROM-Prog Hex 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 |
| MAX6885ETP-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 |
| MAX6886ETP | 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 |
| MAX6886ETP+ | 功能描述:監(jiān)控電路 Pin-Selectable Hex Power-Sup Supervisor 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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