STA8135G datasheet(29/41 Pages) STMICROELECTRONICS

Part #	STA8135G

Description	Teseo V family industrial triple-band multi-constellation GNSS precise engine receiver

PDF	41 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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4.6

Power up timing sequence

Figure 7. Power up timing diagram

VBK_IN

VCORE/VDD_EXT_REG

Other supplies

RESETn

On-chip ring osc

tRiOscVCOREIN_On

tVCOREIN_On

tVSupply_On

tRESETn

tRiOscRESETn

Table 26. Power up timing data

Symbol

Condition

Min. Max. Unit

Comment

tVCORE_IN_On

VBK_IN > 1.62 V

0 (1)

Time from the power-on of VBK_IN to the power-on of

VCORE_IN or

VDD_EXT_REG

tVSupply_On

VBK_IN > 1.62 V

0 (2)

Time from the power-on of VBK_IN to the power-on of other

supplies

tRESETn

VBK_IN > 1.62 V

ms Time from the power-on of VBK_IN to RESETn going high

tRiOscRESETn

VCORE_IN > 1.62 V or

VDD_EXT_REG > 1.14 V

0.5

Time from RESETn going high to the on-chip ring oscillator

start up

tRiOscVCOREIN_On RESETn = high

0.5

Time from VCORE or VDD_EXT_REG applied to the on-

chip ring oscillator start up

1. The simultaneous power-on of VBK_IN and VCORE_IN or VDD_EXT_REG is allowed and tested.

2. The simultaneous power-on of VBK_IN and other supplies is allowed and tested

4.7

Digital interface AC timing characteristics

Figure 8. Clock block diagram

TOdly

TIS

TIH

CLK period

STA8135G

Electrical specifications

DS14788 - Rev 1

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