MT9V403 Micron, MT9V403 Datasheet - Page 20

• Manufacturer Part Number: MT9V403
• Description: 1/2-INCH VGA (WITH FREEZE-FRAME) CMOS ACTIVE-PIXEL DIGITAL IMAGE SENSOR
• Manufacturer: Micron

Electronic Shutter Exposure Control
shutter's exposure duration (integration time) is pro-
grammed via the two-wire serial interface. The
MT9V403 shutter can be operated to generate continu-
ous video output (simultaneous master mode or
sequential master mode) or capture single images
(snapshot mode).
shot mode is 2 row times. With a 66 MHz SYSCLK the
minimum integration time is 20µs (10µs row time ±2
rows). The maximum integration time is either is 256
Table 5:
Sequential mode or snapshot mode
Readout Scanning
or interlaced scan modes. Progressive scan is the
default mode. In the interlace scan mode there are two
readout options. The frame synchronization wave-
forms for interlaced scanning are shown in Figure 27,
09005aef80c07280
MT9V403_DS.fm - Rev. B 1/04 EN
RESOLUTION (# OF ROWS)
For the master and snapshot mode the electronic
The minimum integration time in master or snap-
The MT9V403 can operate in either progressive scan
502 (full resolution)
502 (full resolution)
502 (full resolution)
FRAME_VALID
Figure 27: Frame Synchronization Waveforms for Interlaced Scanning
ROW_VALID
251
125
251
125
63
63
Maximum Integration Time vs. Resolution and Clock Speed
Row 2
CLOCK SPEED (SYSCLK)
Row 4
66 MHz
66 MHz
66 MHz
66 MHz
24 MHz
24 MHz
24 MHz
24 MHz
10 MHz
1/2-INCH VGA (WITH FREEZE-FRAME) CMOS
Odd Field Marker
Row 494
ACTIVE-PIXEL DIGITAL IMAGE SENSOR
20
{= N x 671 x 1/FSYSCLK}
frame times (1.3 sec @ 200 fps) or the inverse of the
frame rate.
integration time is limited by the inverse of the frame
rate because one cannot integrate longer than a frame
time. With a 66 MHz clock and full resolution (502
rows) the maximum integration time is 5ms
(= 1/200 fps). In sequential master mode or snapshot
mode the maximum integration time is limited to 256
frame times. Table 5 shows some examples of how the
maximum integration time changes with resolution
and clock speed.
which shows alternating readout of the even-num-
bered and odd-numbered rows in consecutive frames.
There is also an option that allows sequential readout
of only the odd or even rows of a frame (effectively a X2
vertical subsampling of the image).
When in simultaneous master mode, the maximum
Row 1
FRAME TIME
Micron Technology, Inc., reserves the right to change products or specifications without notice.
5.1ms
2.6ms
1.3ms
0.6ms
5.1ms
1.8ms
14ms
33ms
7ms
INTEGRATION TIME
MAXIMUM
1.3 sec
0.7 sec
0.3 sec
0.2 sec
3.6 sec
1.8 sec
0.9 sec
0.4 sec
8 sec
Row 493
©2004 Micron Technology. Inc.