STA109X datasheet(76/127 Pages) STMICROELECTRONICS

부품명	STA109X

상세설명	Accordo2 family – Automotive dual core processor for car radio and display audio application

PDF	127 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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76 / 127 page

Electrical Characteristics

STA108x, STA109x

76/127

DS13319 Rev 2

Figure 16. Wake Up (without VDDOK)

Table 42. Wake Up Timings (without VDDOK)

Note:

For the Wake-Up sequence without VDDOK see Figure 16.

Symbol

Parameter

Timing

Unit

Min.

Max.

PWREN to last voltage stable

174(1)

1. This value is programmable in the Power Management Unit. By default, at POR, is set to the maximum of

174 ms.

Last voltage stable to LVI(2)

2. The LVI signal has effect during the boot only if the LVIEn bit is set.



If the LVIEn bit is set, the t4 timing, if respected, is the minimum timing that ensures that the PMU FSM

reaches the ON state.



If the LVIEn bit is set and an LVI event occurs before the timing t2, the PMU FSM directly moves back to

the STAND-By state without reaching the ON state.

8000+2

µs

Last Voltage Stable to SYSRTSn

> 0

µs

VDDIO_ON

VDD_ON_VREG

VDD

VDD_IO

PWREN

wake up event

SYSRSTn (optional)

See Figure 12

LVI (if enabled)

VDDOK (High)

tSYSSRSTn

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