M52957AFP

Rev.1.0, Sep.19.2003, page 10 of 13

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.

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 judgment level of CINT terminal although

INT 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.