M52957 View Datasheet(PDF) - MITSUBISHI ELECTRIC

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M52957

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

MITSUBISHI ELECTRIC  

MITSUBISHI ICs (AV COMMON)

M52957FP

DISTANCE DETECTION SIGNAL PROCESSING FOR 3V SUPPLY VOLTAGE

(4) HOLD, INT

These terminals implement the following controls by inputting

HIGH/LOW.

a. CINT rapid charge ON, OFF

b. CH rapid charge ON, OFF

c. Stationary light hold ON, OFF

d. The first integration ON, OFF

e. The second integration ON, OFF

Stationary light hold

HOLD

CINT

rapid charge

INT

Reset canceled

CH

rapid charge

The first

integration

The second

integration

a. CINT rapid charge

After reset is canceled, the capacity of CINT is charged rapidly

until INT terminal first falls.

b. CH rapid charge

After reset is canceled, the capacity of CH is charged rapidly

until INT terminal first rises and falls.

c. Stationary light hold

After reset is canceled, holds the stationary light while HOLD

terminal is HIGH.

(5) SOUT

When the second integration starts,This terminal becomes from

HIGH to LOW. If CINT terminal exceeds judge level or INT

terminal becomes from HIGH to LOW, this terminal becomes

from LOW to HIGH.

(notice) As the signal from microcomputer,the signal that controls

IRED ON/OFF is required except for above mentioned

control signals. But applying the timing of HOLD is

available.

d. The first integration

After reset is canceled, as HOLD terminal is HIGH and INT

terminal is HIGH, the first integration is implemented while INT

terminal is HIGH. Therefore,the first integration must be

finished(INT terminal from HIGH to LOW) until stationary light

hold will be completed (HOLD terminal from HIGH to LOW)

e. The second integration

After reset is canceled, the second integration is implemented as

HOLD terminal is LOW and INT terminal is HIGH. And,the

second integration is completed by exceeding judgement level of

CINT terminal although INT terminal is HIGH.

6

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