M64285FP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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производитель

M64285FP

CMOS Image Sensor (Image inputting systems for gaming devices, Toys, PC interface systems)

MITSUBISHI ELECTRIC  

Technical Data Sheet

MITSUBISHI

PRELIMINARY

MITSUBISHI CMOS Image Sensor

M64285FP

11.4. Data Rate Setting Register, DR (4 bits)

M64285FP is capable of varying the data output cycles, DOC ( = 1 / [data rate] ), in 16 steps

to meet various speeds of the A/D converters. DOC is set by the DR register. Please note

that DOC affects the accumulation time setting.

Register Range

0000 B ~ 1111B

Data Output Cycles : DOC

4 φ ~ 64 φ

Step

4φ

Number of Steps

16

* The Register value of 4 figures is the arrangement of DR3, DR2, DR1, DR0 in this order.

* DOC = ( [Register Value] + 1 ) x [Step]

* The setting of the accumulation time varies depending on DOC, since the status of the internal

counter depends on the varied data rates.

ex ) System Clock

2.0 MHz

1.23 MHz

1.0 MHz

0.5 MHz

Data Output Cycle Time

2.0 ~ 32.0 µs

3.3 ~ 52.0 µs

4.0 ~ 64.0 µs

8.0 ~ 128.0 µs

Data Rate

500 ~ 31.2 kHz

307.5 ~ 19.2 kHz

250 ~ 15.6 kHz

125 ~ 7.8 kHz

11.5. Accumulation Time Setting Register, C (16 bits)

The accumulation time of 2D image is set based on the time step needed to read out one

line. In the Projection image continuous output modes or in snapshot modes, the time step is

32φ, however, there are lower limits of the setting time in projection image continuous

output modes decided by the readout time.

Although it is possible to set a very long accumulation time on the register in the order of

second, it does not necessarily mean the analog function is guaranteed.

11.5.1. 2D Image : Continuous Output

* MD = 0000

* [Accum. Time] = [Register Value] x [Step]

Register Range

0000 H ~ FFFF H

Min.

0φ

Step [ φ ]

38 + DOC x 32

Number of Steps

65, 536

ex ) DOC

System Clock Range of Accum. Time

Step

4φ

2.0 MHz

0.5 MHz

64 φ

2.0 MHz

0.5 MHz

0 ~ 5.4 s

0 ~ 21.8 s

0 ~ 68.4 s

0 ~ 273.4 s

83 µs

332 µs

1043 µs

4172 µs

* The output time [φ] for 1 frame is

( 38 + DOC x 32 ) x 33

( 38 + DOC x 32 ) x ( [Register Value] + 2 )

( [C Register Value ≤ 001E H )

( [C Register Value] ≥ 001F H )

( 10 / 26 )

Specifications and information herein are subject to change without notice.

02 / 05 / 01

Ver. 2.2E_01

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