STPM801 datasheet(26/38 Pages) STMICROELECTRONICS

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Table 23. Standby pattern parameters

Symbol

Parameter

Test condition

Min Typ Max Unit

STAND-BY_T0min

Pattern minimum time logic level 0

Guaranteed by scan

160

μs

STAND-BY_T0max

Pattern maximum time logic level 0

Guaranteed by scan

240

μs

STAND-BY_T1min

Pattern minimum time logic level 1

Guaranteed by scan

μs

STAND-BY_T1max

Pattern maximum time logic level 1

Guaranteed by scan

120

μs

STAND-BY_T_Blank

Blanking time from Power up to consider the

standby pattern

Guaranteed by scan

140

160

STAND-BY_Exit_flt

Filter time on STAND-BY_IN pin to exit from

standby mode

Guaranteed by scan

0.9

1.1

STAND-BY_ECHO_LH

Time between validated stand-by_pattern_in

and ECHO pin assertion

Guaranteed by scan

300

μs

STAND-BY_ECHO_HL

Time between validated stand-by_pattern_out

and ECHO pin assertion

Guaranteed by scan

300

μs

STAND-BY_PIN _in_hl_th High input voltage range

STBY_PIN _in_ll_th

Low input voltage range

0.8

STAND-BY_PIN _in_pu

Internal pull up current

Pin = 0 V

μA

STAND-BY_ECHO_LOW Stand-By ECHO LOW Level

PullUP current 1 mA, used

as OpenDrain

0.4

STAND-BY_ECHO_HIGH Stand-By ECHO push pull signal HIGH

PullDOWN current 100 μA

5.1.6

STAND-BY exception

STPM801 can reject the standby enter request by pattern, according to the below pictures.

Figure 15. Standby pattern during blanking time

ENOUT

blk_counter

...

threshold

FLT

HGATE/DGATE

STBY_IN PIN

Enable pattern IN

Enable pattern OUT

STAND BY state

STBY_ECHO PIN

Note:

If standby pattern is received before blanking time expiration it will be ignored.

STPM801

STAND-BY behavior in detail

DS13990 - Rev 2

page 26/38

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