M66244FP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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M66244FP

High Speed Monolithic Pulse Width Modulator

MITSUBISHI ELECTRIC  

June 1998 Ver.8.0.0

MITSUBISHI <DIGITAL ASSP>

M66244FP

High Speed Monolithic Pulse Width Modulator

OPERATING TIMING BETWEEN POWER ON TO NORMAL OPERATION

After Power on, it needs following oerations before start normal operation.

(1) Set the value of FRANGE1 and FRANGE2 depends on operation ferequency. (Refer to page 9)

(2) Input CLK same as normal operarion frequency.

(3) Reset operarion using RESET (31pin) and TRST (3pin) .

(reset to initial state of internal logic and BSR)

(4) CLK continue to input during 100msec.

Power ON

reset cycle

RESET

tsu(RESET)

set up period

of internal circuit

100msec

th(RESET)

normal operation

period

TRST

CLK

FRANGE1

FRANGE2

D<5:0>

SEM/DEM

Fixed value determined page9

Fixed value determined page9

n

n+1 n+2

n

n+1 n+2

LEM/TEM

PWMOUT

Note: The reset cycle requires a minimum of two cycles.

C 1998 MITSUBISHI ELECTRIC CORPORATION (5/15)

n

n+1 n+2

td(PWM)

n

N cycle

output

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