Abstract: A system includes a power disable circuit coupled to a bus connector of a host system and to power circuitry adapted to power on and off a memory device. The power disable circuit includes: source-coupled first FET and second FET with gates to receive a power disable (PWDIS) signal of the bus connector, wherein, in response to an asserted input of the PWDIS signal at a second gate of the second FET, a drain of the first FET is left floating; a latch circuit to assert an output in response to a general purpose input/output signal received from a processing device; and a third FET coupled to the drain of the first FET and to the output of the latch circuit, wherein in response to assertion of the output of the latch circuit, the third FET is to signal to the power circuitry to cut power to the memory device.

Abstract: A system includes a power disable circuit coupled to a bus connector of a host system and to power circuitry adapted to power on and off a memory device. The power disable circuit includes: source-coupled first FET and second FET with gates to receive a power disable (PWDIS) signal of the bus connector, wherein, in response to an asserted input of the PWDIS signal at a second gate of the second FET, a drain of the first FET is left floating; a latch circuit to assert an output in response to a general purpose input/output signal received from a processing device; and a third FET coupled to the drain of the first FET and to the output of the latch circuit, wherein in response to assertion of the output of the latch circuit, the third FET is to signal to the power circuitry to cut power to the memory device.

Abstract: A system includes a memory device and a power disable circuit coupled to a bus connector and to power circuitry adapted to power on and off the memory device. A processing device is coupled to the bus connector, to the power disable circuit, and to the memory device. The processing device is to monitor a state of a power disable (PWDIS) signal of the bus connector while the PWDIS signal is at a first voltage level, and in response to the PWDIS signal transitioning to a second voltage level, determine whether a length of time for which the PWDIS signal has been at the second voltage level satisfies a threshold criterion. In response to the length of time for which the PWDIS signal has been at the second voltage level satisfying the threshold criterion, the processing device is to enable the power disable circuit with a general purpose input/output signal.

Abstract: A system includes a memory device and a power disable circuit coupled to a bus connector and to power circuitry adapted to power on and off the memory device. A processing device is coupled to the bus connector, to the power disable circuit, and to the memory device. The processing device is to monitor a state of a power disable (PWDIS) signal of the bus connector while the PWDIS signal is at a first voltage level, and in response to the PWDIS signal transitioning to a second voltage level, determine whether a length of time for which the PWDIS signal has been at the second voltage level satisfies a threshold criterion. In response to the length of time for which the PWDIS signal has been at the second voltage level satisfying the threshold criterion, the processing device is to enable the power disable circuit with a general purpose input/output signal.