參數(shù)資料
型號(hào)： MAX16032
廠商： Maxim Integrated Products, Inc.
英文描述： EEPROM-Based System Monitors with Nonvolatile Fault Memory
中文描述： 基于EEPROM的系統(tǒng)監(jiān)控器，提供非易失故障存儲(chǔ)
文件頁(yè)數(shù)： 16/42頁(yè)
文件大?。?/td> 396K
代理商： MAX16032
M
EEPROM-Based System Monitors
with Nonvolatile Fault Memory
16
______________________________________________________________________________________
Detailed Description
Getting Started
The MAX16031/MAX16032 contain both I
2
C/SMBus and
JTAG serial interfaces for accessing registers and
EEPROM. Use only one interface at any given time. For
more information on how to access the internal memory
through these interfaces, see the I
2
C/SMBus-Compatible
Serial Interface and JTAG Serial Interface sections. This
data sheet uses a specific convention for referring to bits
within a particular address location. As an example,
r15h[3:0] refers to bits 3 through 0 in register with
address 15 hexadecimal.
The factory-default values at power-on reset (POR) for all
EEPROM locations are zeros. POR occurs when V
CC
reaches the undervoltage lockout (UVLO) of 2.8V. At
POR, the device begins a boot-up sequence. During the
boot-up sequence, all monitored inputs are masked from
initiating faults and EEPROM contents are copied to the
respective register locations. The boot-up sequence
takes up to 1.81ms. Monitoring is disabled for up to 16s
past the boot-up sequence by programming r5Bh[3:0]
(see the Miscellaneous Settings section).
RESET
is low
during boot-up and remains low after boot-up for its pro-
grammed timeout period after all monitored channels are
within their respective thresholds.
The MAX16031/MAX16032 monitor up to eight voltages,
up to one current, and up to three temperatures. After
boot-up, an internal multiplexer cycles through each
input. At each multiplexer stop, the 10-bit ADC converts
the analog parameter to a digital result and stores the
result in a register. Each time the multiplexer completes a
cycle, internal logic compares the conversion results to
the thresholds stored in memory. When a conversion vio-
Table 2. Input Monitor Ranges and Enables
lates a programmed threshold, the conversion is config-
ured to generate a fault. Logic outputs are programmed
to depend on many combinations of faults. Additionally,
faults are programmed to trigger a fault log, whereby all
fault information is automatically written to EEPROM.
Voltage Monitoring
The MAX16031 provides eight inputs, IN1–IN8, for volt-
age monitoring. The MAX16032 provides six inputs,
IN1–IN6, for voltage monitoring. Each input voltage
range is programmable through r17h[7:0] and r18h[7:0]
(see Table 2). Voltage monitoring for each input is
enabled through r1Ah[7:0] (see Table 2). There are four
programmable thresholds per voltage monitor input: pri-
mary undervoltage, secondary undervoltage, primary
overvoltage, and secondary overvoltage. All voltage
thresholds are 8 bits wide. Only the 8 most significant
bits of the conversion result are compared to the
thresholds. See the Miscellaneous Settings section to
set the amount of hysteresis for the thresholds. See
Table 1 for an address map of all voltage monitor input
threshold registers.
ADC inputs are configurable for two different modes:
pseudo-differential and single-ended (see Table 3). In
pseudo-differential mode, two inputs make up a differ-
ential pair. Psuedo-differential conversions are per-
formed by taking a single-ended conversion at each
input of a differential pair and then subtracting the
results. The pseudo-differential mode is selectable for
unipolar or bipolar operation. Unipolar differential oper-
ation allows only positive polarities of differential volt-
ages. Bipolar differential operation allows negative and
positive polarities of differential voltages. Bipolar con-
versions are in two’s complement format. For example,
REGISTER
ADDRESS
EEPROM
MEMORY
ADDRESS
BIT RANGE
DESCRIPTION
[1:0]
IN1 Voltage Range Selection:
00 = 5.6V, 01 = 2.8V
10 = 1.4V, 11 = Reserved
[3:2]
IN2 Voltage Range Selection:
00 = 5.6V, 01 = 2.8V
10 = 1.4V, 11 = Reserved
[5:4]
IN3 Voltage Range Selection:
00 = 5.6V, 01 = 2.8V
10 = 1.4V, 11 = Reserved
17h
97h
[7:6]
IN4 Voltage Range Selection:
00 = 5.6V, 01 = 2.8V
10 = 1.4V, 11 = Reserved
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MAX16032ETM+ 功能描述:監(jiān)控電路 EEPROM-Based w/NV Fault Memory 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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
MAX16032ETM+T 功能描述:監(jiān)控電路 EEPROM-Based w/NV Fault Memory 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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
MAX16033LLB23+ 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.32V 10PIN UDFN - Rail/Tube
MAX16033LLB23+T 功能描述:監(jiān)控電路 Battery Backup 2.5V-Ep 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(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)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
MAX16033LLB26+ 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.63V 10PIN UDFN - Rail/Tube
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