參數(shù)資料
型號(hào)： MAX6870ETJ-T
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 電源管理
英文描述： EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
中文描述： 6-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC32
封裝： 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-32
文件頁數(shù)： 28/51頁
文件大?。?/td> 672K
代理商： MAX6870ETJ-T
MAX6870/MAX6871
EEPROM-Programmable Hex/Quad
Power-Supply Sequencers/Supervisors with ADC
34
______________________________________________________________________________________
and the master device at clock rates up to 400kHz. Figure
2
shows
the
interface
timing
diagram.
The
MAX6870/MAX6871 are transmit/receive slave-only
devices, relying upon a master device to generate a
clock signal. The master device (typically a microcon-
troller) initiates data transfer on the bus and generates
SCL to permit that transfer.
A master device communicates to the MAX6870/
MAX6871 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 a logic input/open-
drain output. SCL and SDA both require external pullup
resistors to generate the logic-high voltage. Use 4.7k
for most applications.
Bit Transfer
Each clock pulse transfers one data bit. The data on
SDA must remain stable while SCL is high (Figure 3),
otherwise the MAX6870/MAX6871 register a START or
STOP condition (Figure 4) from the master. SDA and
SCL idle high when the bus is not busy.
Start and Stop Conditions
Both SCL and SDA idle high when the bus is not busy. A
master device signals the beginning of a transmission
with a START (S) condition (Figure 4) by transitioning
SDA from high to low while SCL is high. The master
device issues a STOP (P) condition (Figure 4) by transi-
tioning SDA from low to high while SCL is high. A STOP
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 2. Serial-Interface Timing Details
DATA LINE STABLE,
DATA VALID
SDA
SCL
CHANGE OF
DATA ALLOWED
Figure 3. Bit Transfer
P
S
START
CONDITION
SDA
SCL
STOP
CONDITION
Figure 4. Start and Stop Conditions
相關(guān)PDF資料
PDF描述
MAX6870ETJ+ EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
MAX6871ETJ+ EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
MAX6871ETJ-T EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
MAX6871ETJ+T EEPROM-Programmable Hex/Quad Power-Supply Sequencers/Supervisors with ADC
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MAX6871ETJ 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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
MAX6871ETJ+ 功能描述:監(jiān)控電路 EEPROM-Prog Quad Power-Sup Sequencer RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)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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