M63154AFP

Rev.1.0, Sep.16.2003, page 12 of 15

CHARGE PUMP FUNCTION

ACC

ACC

ACC

ACC

DEC

DEC

DEC

DEC

VCTL(CPout)

output current

Function

H(5V)

H(5V)

0

µAHold

H(5V)

L(0V)

-200

µA

Deceleration

L(0V)

H(5V)

+200

µA

Acceleration

L(0V)

L(0V)

0

µAHold

[Timing chart]

/ACC

/DEC

5V

5V

0V

0V

VCTL

(CPout)

-200uA

+200uA

0

OSCC Connecta Output Voltage Function

The OFF time of the current-chopper is determined by the capacitance connected to the OSCC pin and the resistance

connected to the OSCR pin. The calculation is as follows:

Toff = 0.9 [V] x C [F] / (1.25 [V] / 2R [k

Ω]

OSCC

0.0V

1.00V

OFF