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STPMIC25 Datasheet(PDF) 38 Page - STMicroelectronics |
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STPMIC25 Datasheet(HTML) 38 Page - STMicroelectronics |
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38 / 145 page  5.1.1 Transition conditions Table 21. PMIC state machine transition conditions Transition symbol State transition Transition condition A NO_SUPPLY to INIT&LOAD VIN > VINPOR_Rise B INIT&LOAD to OFF ! Auto_turn_on condition: Init_OK && loadNVM_OK && !(AUTO_TURN_ON || PONKEYn_low || VBUS_high) C INIT&LOAD to CHECK&LOAD Auto_turn_on condition: Init_OK && loadNVM_OK && (AUTO_TURN_ON || PONKEYn_low || VBUS_high) D OFF to CHECK&LOAD Turn-on condition: PONKEYn falling edge || VBUS rising edge || WAKEUPn pin low E CHECK&LOAD to POWER_UP CHECK&LOAD is a transitory state going to POWER_UP: VIN > VINOK && Tj < TSHDN_Fall && FLT_TMR timer ended (see Table 24) F POWER_UP to RUN When a power-up sequence ends without hard-fault, the PMIC releases RSTn, transition F occurs when the RSTn signal goes higher than VIH. (see Section 5.4.7) G STANDBY to RUN PWRCTRLx inactive (see Section 5.4.6) H RUN to STANDBY PWRCTRLx active and all buck converters in LP mode or turned off (see Section 5.4.6) I POWER_ON to POWER_DOWN RSTn signal asserted by AP Turn-off condition: Software switch-off (SWOFF) || VIN < VINOK_Fall (hard-fault) || PONKEYn long press (hard-fault) || Thermal shutdown (hard-fault) || OCP fail-safe level1 (hard-fault) || Watchdog (hard-fault) See Section 5.4.4 J POWER_UP to POWER_DOWN Turn-off condition (hard-fault): VIN < VINOK_Fall (hard-fault) || PONKEYn long press (hard-fault) || Thermal shutdown (hard-fault) || OCP fail-safe level1 (hard-fault) || Watchdog (hard-fault) K POWER_DOWN to CHECK&LOAD RSTn asserted by AP || (SWOFF && RREQ_EN) || (VIN_FLT_CNT <= VIN_FLT_CNT_MAX && PKEY_FLT_CNT <= PKEY_FLT_CNT_MAX && TSHDN_FLT_CNT <= TSHDN_FLT_CNT_MAX && OCP_FLT_CNT <= OCP_FLT_CNT_MAX && WDG_FLT_CNT <= WDG_FLT_CNT_MAX) L POWER_DOWN to OFF SWOFF && !RREQ_EN STPMIC25 Feature descriptions DS14278 - Rev 3 page 38/145 |
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