An all-fire detection circuit for an electrically initiated inertial igniter munition. The all-fire detection circuit including: an input configured for receiving an input voltage over a duration responsive to an acceleration of the munition; an electrical storage device configured to receive a portion of the input voltage over the duration and to thereby accumulate a charge, an output coupled to the electrical storage device to deliver an all-fire indication when at least a portion of the charge exceeds a first predetermined voltage; and a first diode having a first anode coupled to the input and a first cathode coupled to the electrical storage device, the first diode selected to have a backward leakage draining the charge when the input voltage drops below a second predetermined voltage.