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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) |
| 文件頁數(shù)： | 20/42頁 |
| 文件大?。?/td> | 396K |
| 代理商： | MAX16032 |
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M
EEPROM-Based System Monitors
with Nonvolatile Fault Memory
20
______________________________________________________________________________________
The ADC converts the internal sensor and remote sen-
sor amplifier outputs. Each time the ADC converts all
enabled parameters, the temperature conversions are
compared to the temperature threshold registers (r46h
to r4Bh and r4Dh). Unlike the voltage input compara-
tors, the temperature threshold comparators are 10 bits
wide.
OVERT
is the designated output for temperature
faults, although other outputs are programmed to
depend on temperature faults as well. See the
Programmable Inputs/Outputs section for more informa-
tion on programming output dependencies. See the
Faults section for more information on setting tempera-
ture fault thresholds.
The remote temperature sensor amplifier detects a
short or open between DXP_ and DXN_. The detection
of these events is programmed to cause a fault.
Temperature thresholds and conversions are in a two’s
complement temperature format, where 1 LSB corre-
sponds to 0.5°C. The data format for temperature con-
versions is illustrated in Table 5.
Offset and gain errors for remote temperature sensor
measurements are user-trimmed through gain registers
r19h[7:2]/r4Fh[5:0] and offset registers r1Bh[7:5]/r4D[6:4],
as shown in Tables 4 and 6. The gain value trims the
high (56μA) drive current source to compensate for the
n-factor of the remote diode. The offset value is multi-
plied by 4 and added to the conversion result numeri-
cally. The MAX16031/MAX16032 contain an internal
lowpass filter at DXN_ and DXP_ to reduce noise. See
the Miscellaneous Settings section for more information
on programming the filter cutoff frequency.
Reading ADC Results
ADC conversion results are read from the ADC conver-
sion registers through the I
2
C/SMBus-compatible or
JTAG interfaces (see Table 7). These registers are also
used for fault threshold comparison. Voltage monitoring
thresholds are compared with only the first 8 MSBs of
the conversion results.
Programmable Inputs/Outputs
The MAX16031 provides two general fault outputs,
FAULT1
and
FAULT2
, one reset output
RESET
, one
temperature fault output
OVERT
, one current fault out-
put
OVERC
, two general-purpose inputs/outputs GPIO1
and GPIO2, and one SMBALERT#-compatible output
ALERT
. The MAX16032 provides the same except
OVERC
. All outputs are open drain and require pullup
resistors. Fault outputs do not latch except for
OVERC
,
which either latches or does not latch depending on the
configuration bit in r5Ch. Individual fault flag bits, how-
ever, latch (see the Faults section) and must be cleared
one bit at a time by writing a byte containing all zeros
except for a single ‘1’ in the bit to be cleared.
The general outputs,
FAULT1
and
FAULT2
, are identi-
cal in functionality and are programmed to depend on
overvoltage, undervoltage, overtemperature, and over-
current parameters. See r1Dh and r1Eh in Table 8 for
more detailed information regarding the general fault
output dependencies.
The reset output
RESET
provides many programmable
output dependencies as well as reset timeouts. See
r20h and r21h in Table 8 for detailed information on
RESET
output dependencies and timeouts.
The temperature fault output
OVERT
indicates tempera-
ture-related faults.
OVERT
is programmed to depend
on any primary temperature threshold and/or the
remote diode open/short flags.
OVERT
latches low dur-
+
-
TO ADC MUX
V
BIAS
~ 100mV
I
BIAS
DXP_
DXN_
ABP
ABP
I
HIGH
I
LOW
Figure 4. Remote Temperature Sensor Amplifier Circuitry
TEMPERATURE (°C)
+128
+125
+100
+25.5
0
-10
-75
-100
-128
Diode fault
DIGITAL CODE
1100000000
1011111010
1011010000
1000110011
1000000000
0111101100
0101101010
0100111000
0100000000
0000000000
Table 5. Temperature Data Format
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| 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 |
| 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 |
| MAX16033LLB26+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 2.63V 10PIN UDFN - Rail/Tube |
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