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MAX34446
PMBus Power-Supply Data Logger
STATUS_BYTE (78h)
The STATUS_BYTE command returns 1 byte of information with a summary of the most critical faults. A value of 1
indicates that a fault or warning event has occurred and a 0 indicates otherwise. Bits for unsupported features are
reported as 0. The STATUS_BYTE cannot be restored by RESTORE_DEFAULT_ALL command. Table 10 describes the
STATUS_BYTE message content. This command is read-only.
Table 10. STATUS_BYTE
BIT
7:6
5
4
3
2
1
0
BIT NAME
0
VOUT_OV
IOUT_OC
0
TEMPERATURE
CML
NONE OF THE ABOVE
MEANING
These bits always return a 0.
An overvoltage fault has occurred.
An overcurrent fault has occurred.
This bit always returns a 0.
A temperature fault or warning has occurred.
A communication, memory, or logic fault has occurred.
A fault or warning not listed in bits [7:1] has occurred.
STATUS_WORD (79h)
The STATUS_WORD command returns 2 bytes of information with a summary of the reason for a fault. The low byte of
the STATUS_WORD is the same data as the STATUS_BYTE. Table 11 describes the STATUS_WORD message content.
Table 11. STATUS_WORD
BIT
15
14:13
12
11
10:6
5
4
3
2
1
0
BIT NAME
VOUT
0
MFR
POWER_GOOD#
0
VOUT_OV
IOUT_OC
0
TEMPERATURE
CML
NONE OF THE ABOVE
MEANING
An output voltage fault has occurred.
These bits always return a 0.
A bit in STATUS_MFR_SPECIFIC has been set.
Global power good has been negated. Applies to all monitored voltages. This is a status-only bit
and is not latched.
These bits always return a 0.
An overvoltage fault has occurred.
An overcurrent fault has occurred.
This bit always returns a 0.
A temperature fault or warning has occurred.
A communication, memory, or logic fault has occurred.
A fault or warning not listed in bits [7:1] has occurred.
STATUS_VOUT (7Ah)
Table 12. STATUS_VOUT
BIT
7
6
5
4
3:0
BIT NAME
VOUT_OV_FAULT
VOUT_OV_WARN
VOUT_UV_WARN
VOUT_UV_FAULT
0
VOUT overvoltage fault.
VOUT overvoltage warning.
VOUT undervoltage warning.
VOUT undervoltage fault.
These bits always return a 0.
MEANING
Maxim Integrated
24
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相关代理商/技术参数
MAX3444EAPA
功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EASA
功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EASA+
功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EASA+T
功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EASA-T
功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EEPA
功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EESA
功能描述:RS-485接口IC RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
MAX3444EESA+
功能描述:RS-485接口IC 10Mbps Fail-Safe RS-485/J1708 Tcvr RoHS:否 制造商:Texas Instruments 数据速率:250 Kbps 工作电源电压:3.3 V 电源电流:750 uA 工作温度范围:- 40 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube