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LM80 数据表(PDF) 23 Page - National Semiconductor (TI) |
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LM80 数据表(HTML) 23 Page - National Semiconductor (TI) |
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23 / 29 page ![]() Functional Description (Continued) 12.3 Configuration Register — Address 00h Power on default <7:0> = 00001000 binary Bit Name Read/ Write Description 0 Start Read/Write A one enables startup of monitoring operations, a zero puts the part in standby mode. Note: The outputs of Interrupt pins will not be cleared if the user writes a zero to this location after an interrupt has occurred unlike “INT_Clear” bit.At start up, limit checking functions and scanning begin. Note, all limits should be set in the Value RAM before setting this bit HIGH. 1 INT Enable Read/Write A one enables the INT Interrupt output. 2 INT polarity select Read/Write A one selects an active high open source output while a zero selects an active low open drain output. 3 INT_Clear Read/Write A one disables the INT and RST_OUT/OS outputs without affecting the contents of Interrupt Status Registers. The device will stop monitoring. It will resume upon clearing of this bit. 4 RESET Read/Write A one outputs at least a 10 ms active low reset signal at RESET, if <7> = 1 and <6> = 0 in the Fan Divisor/RST_OUT/OS Register. This bit is cleared once the pulse has gone inactive. 5 Chassis Clear Read/Write A one clears the CI (Chassis Intrusion) pin. This bit clears itself after the CI pins cleared. 6 GPO Read/Write A one in this bit drives a one on GPO (General Purpose Output) pin. 7 INITIALIZATION Read/Write A one restores power on default value to the Configuration Register, Interrupt Status Registers, Interrupt Mask Registers, Fan Divisor/RST_OUT/OSRegister, and the OS Configuration/Temperature Resolution Register. This bit clears itself since the power on default is zero. www.national.com 23 |
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