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SWCS049A 数据表(PDF) 44 Page - Texas Instruments |
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SWCS049A 数据表(HTML) 44 Page - Texas Instruments |
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44 / 119 page  SWCS049-024 NO SUPPLY OFF BACKUP VCC7 or BB > VBNPR and VCC7 < VMBLO ACTIVE SLEEP VCC7 and BB < VBNPR VCC7 < VMBLO VCC7 > VMBHI POWER ON disabled POWER ON Enabled And VCCS > VMBCH VCC7 > VMBHI VCC7 and BB < VBNPR VCC7 and BB < VBNPR VCC7 < VMBLO VCC7 < VMBLO SLEEP disabled SLEEP enabled POWER ON disabled BB: Backup battery voltage NRESPWRON HDRST PWRON_LP_IT Pulse generator TDOINT1 TD DEV_ON PWRHOLD PWRON DEV_OFF THERM_TS DEV_OFF_RST HDRST PWRDN_POL PWRDN POWER ON ENABLE SLEEP ENABLE SLEEPSIG_POL SLEEP INT1 DEV_SLP AUTODEV_ON INT1 Copyright © 2016, Texas Instruments Incorporated 44 TPS659110, TPS659112, TPS659113 TPS659114, TPS659118, TPS6591133 SWCS049Q – JUNE 2010 – REVISED MARCH 2016 www.ti.com Submit Documentation Feedback Product Folder Links: TPS659110 TPS659112 TPS659113 TPS659114 TPS659118 TPS6591133 Detailed Description Copyright © 2010–2016, Texas Instruments Incorporated 6.3 Embedded Power Controller (EPC) The EPC manages the state of the device and controls the power-up sequence. 6.3.1 State Machine The EPC supports the following states: • NO SUPPLY: The main battery supply voltage is not high enough to power the VRTC regulator. A global reset is asserted in this case. Everything on the device is off. • BACKUP: The main battery supply voltage is high enough to enable the VRTC domain but not enough to switch on all the resources. In this state, the VRTC regulator is in backup mode and only the 32K oscillator and RTC module are operating (if enabled). All other resources are off or under reset. • OFF: The main battery supply voltage is high enough to start the power-up sequence, but device power on is not enabled. All power supplies are in the OFF state except VRTC. • ACTIVE: Device POWER ON enable conditions are met and regulated power supplies are on or can be enabled with full current capability. • SLEEP: Device SLEEP enable conditions are met and some selected regulated power supplies are in low-power mode. Figure 6-1 shows the transitions for the state machine. NOTE: PWRHOLD enables power-on unless the pin is programmed as GPI. Figure 6-1. Embedded Power Control State Machine |
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