LU850425 Ver la hoja de datos (PDF) - Sharp Electronics

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LU850425

8-bit Microcomputer for DSP Camera Systems

Sharp Electronics 

LU850425

ELECTRONIC SHUTTER SPEED CONTROL

(1) Electronic Shutter Speed Selection by Pins 56,

57 and 58 (Digital Input)

An electronic shutter speed can be selected by the

combination of high/low level at three pins below

under the condition of a high level of pin 9 (IRIS).

IRISSEL1 IRISSEL2 IRISSEL3

(PIN 56) (PIN 57) (PIN 58)

SHUTTER SPEED

A/D input (pin 47) control is available. See "(2) Electronic

L

L

L

Shutter Speed Selection by Pin 47 (A/D Input)".

H

L

L 1/60 s (NTSC), 1/50 s (PAL)

L

H

L 1/100 s (NTSC), 1/60 s (PAL) (flicker-less mode)

H

H

L Preset mode 1

L

L

H Preset mode 2

H

L

H Preset mode 3

L

H

H Preset mode 4

H

H

H Preset mode 5

NOTE

1

1

1

1

1

(2) Electronic Shutter Speed Selection by Pin 47

(A/D Input)

An electronic shutter speed can be selected by DC

input level of pin 47 if all the above 56, 57 and 58

pins are connected to low.

VOLTAGE LEVEL (PIN 47)

SHUTTER SPEED

NOTE

0 to 0.41 V

1/60 s (NTSC), 1/50 s (PAL)

0.42 to 0.82 V

1/100 s (NTSC), 1/60 s (PAL)

0.83 to 1.23 V

Preset mode 1

1

1.24 to 1.64 V

Preset mode 2

1

1.65 to 2.05 V

Preset mode 3

1

2.06 to 2.45 V

Preset mode 4

1

2.46 to 2.87 V

Preset mode 5

1

2.88 to 3.3 V

Preset mode 6

1

NOTE :

1. All of above preset modes are optional and each mode should be adjusted by a PC or an adjustment tool.

9

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