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参数资料
| 型号： | MAX1153 |
| 厂商： | Maxim Integrated Products, Inc. |
| 元件分类： | 温度/湿度传感器 |
| 英文描述： | Stand-Alone. 10-Channel. 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| 中文描述： | 独立的10通道、10位系统监视器，内置温度传感器和VDD监视器 |
| 文件页数： | 20/29页 |
| 文件大小： | 481K |
| 代理商： | MAX1153 |
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M
Stand-Alone, 10-Channel, 10-Bit System Monitors
with Internal Temperature Sensor and V
DD
Monitor
20
______________________________________________________________________________________
Setup Register: Scan Mode Bit (B2)
The scan mode bit selects between automatic scan-
ning and manual conversion mode.
When set (B2 = 1), the MAX1153/MAX1154 enter auto-
matic scanning mode and convert every enabled chan-
nel starting with the internal temperature sensor,
followed by the V
DD
monitor, then sequencing through
AIN0 to AIN7.
After converting all the enabled channels, the
MAX1153/MAX1154 enter a wait state set by the sam-
ple wait bits in the setup register. After completing the
sample wait time, the scan cycle repeats.
When B2 = 0, the MAX1153/MAX1154 are in manual
mode and convert only the selected channel after
receiving a Manually Triggered Conversion command
(see the
Manually Triggered Conversion (Command
Code 0000)
section). Whether in automatic scanning
mode or manual mode, a Read Current Data Register
for Selected Channel command outputs the last-com-
pleted conversion result for the addressed channel at
DOUT.
Setup Register: Reference Selection Bits (B1, B0)
The MAX1153/MAX1154 can be used with an internal
or external reference. Select between internal and
external reference modes through bits B1 and B0 of the
setup register (see Table 10).
Alarm Register
The alarm register (Table 11) holds the current alarm sta-
tus for all of the monitored signals. This 24-bit register
can only be read and cleared. The alarm register has 2
bits for each external input channel, 2 for the onboard
temperature sensor, and 2 for the V
DD
monitor (see
Table 12). At power-up, these bits are logic low, indicat-
ing no alarms at any input. When any bit in the alarm reg-
ister is set, INT becomes active and remains active until
all alarm bits are cleared. After a fault counter exceeds
the set threshold, the alarm register bits for that particular
channel are updated to indicate an alarm.
To clear the interrupt, reset the active alarm bit with the
Clear Alarm Register command, Clear Channel Alarm
command, a RESET command, or by writing a new
configuration to the faulting channel. The alarm register
defaults to 000000 hex.
Table 11 illustrates how the alarm register stores the
information on which channel a fault has occurred. The
alarm code for each bit pair is shown in Table 12.
Channel Registers
Each channel (internal temperature sensor, V
DD
moni-
tor, and AIN0 to AIN7) has registers to hold the conver-
sion result (current data register) and channel-specific
configuration data. The channel-specific configuration
registers include: the upper threshold register, the
lower threshold register, and the channel configuration
register. In differential mode, only the registers for the
even channel of the differential input pair are used. The
channel-specific configuration registers for the odd
channel of a differential channel pair are ignored.
Table 10. Reference Selection
B1
B0
REFERENCE MODE
0
0
Voltage measurements use external reference,
while temperature measurements
use the internal
reference. A 20μs reference startup delay is
added prior to each temperature measurement
in this mode. This is the default mode after
power-up and after a software RESET.
0
1
All measurements
use the internal reference. A
40μs reference startup delay is added prior to
starting the scanning of enabled channels,
allowing the internal reference to stabilize.
Note:
For sample wait times less than 80μs, the
reference is continuously powered when in
automatic scan mode.
1
0
All measurements use the internal reference. By
selecting this mode, the reference is powered up
immediately when
CS
goes high after writing this
configuration. Once the reference system is
powered up, no further delay is added.
1
1
Reserved.
Table 11. Alarm Register Format
B23/B22
TEMP
B21/B20
V
DD
B19/B18
AIN0
B17/B16
AIN1
B15/B14
AIN2
B13/B12
AIN3
B11/B10
AIN4
B9/B8
AIN5
B7/B6
AIN6
B5/B4
AIN7
B3/B2
Res
B1/B0
Res
Table 12. Alarm Register Coding
(2 Bits/Channel)
CODE
00
01
10
00
DESCRIPTION
No alarm (power-up state)
Input is below lower threshold
Input is above upper threshold
Reserved
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1154 | Stand-Alone. 10-Channel. 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| MAX1153-MAX1154 | Stand-Alone, 10-Channel, 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| MAX1154AEUE | Stand-Alone, 10-Channel, 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| MAX1154BEUE | Stand-Alone, 10-Channel, 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| MAX1153AEUE | Stand-Alone, 10-Channel, 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1153_10 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Stand-Alone, 10-Channel, 10-Bit System Monitors with Internal Temperature Sensor and VDD Monitor |
| MAX1153AEUE | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1153AEUE+ | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX1153AEUE+T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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