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參數(shù)資料
| 型號： | STV0680B-001 |
| 廠商： | 意法半導體 |
| 英文描述： | THERMOMETER, SURFACE; RoHS Compliant: NA |
| 中文描述： | 雙模式數(shù)字相機芯片組 |
| 文件頁數(shù)： | 11/60頁 |
| 文件大?。?/td> | 352K |
| 代理商： | STV0680B-001 |
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STV0680A + VV6444/6410/6500
Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
PRELIMINARY
CDSTV0680F-C
Commercial in confidence
11
T
STV0680F_contents.fm
settings for the VV6444 colour set. This means that a VV6404 should not be used with STV0680/680A.
For IR filter design, the best choice filter follows the GS0034 dielectric stack filter specification, which is available from ST. An
alternative, although not optimal filter, would be Schott S8612 doped glass, also sold as CM500.
2.1.2
VV6410 is a CIF resolution, 3.3V CMOS imaging sensor. A brief specification is shown in Section 7.
VV6410
A dual design to support VV6444 and VV6410 is not possible, since VV6410 is a 3v3 sensor. A dual footprint for VV6410 and
VV6500 is not possible since the package types differ, however, the same support circuit is used. See Section 9.
2.1.3
VV6500 is a VGA resolution, 3.3V CMOS imaging sensor. A brief specification is shown in Section 7.
VV6500
A dual design to support VV6444 and VV6500 is not possible, since VV6500 is a 3v3 sensor. A dual footprint for VV6410 and
VV6500 is not possible since the package types differ, however, the same support circuit is used. See Section 9.
2.2
The user interface supported by STV0680A comprises of user controls, audible signals and visual displays.
User interface
2.2.1
The following are typical of the type of functions which are supported by the chipset. These functions are achievable with no more
than 2 push buttons.
Push buttons
1. Mode button (Wake-up/Switch between modes): This button allows the user (1.1) to wake the camera up from standby mode
when the camera is to be used for taking pictures, or (1.2) to switch between modes of operation shown in Section 3..
2. Shutter button (Shutter/confirm action): This button allows the user to take a picture or confirm an action, as shown in Sec-
tion 3.
The modes of operation are described in Section 3.
2.2.2
An LED display camera status, i.e. to show that the camera is in ‘Snapshot’ mode.
LED indicator
2.2.3
STV0680A stores a picture counter value, which shows how many images can still be captured. STV0680A supports a 2x7
segment LCD panel. In ‘Snapshot’ mode and continuous capture mode, this LCD panel displays the number of pictures still
available, which is useful to identify when the user is approaching the maximum number of images which can be stored (see
Table 4 and Table 5). It is possible to clear the images stored in memory, in order to continue taking pictures, as shown in Table
6. In other modes, this LCD panel shows displays a 2-character code as shown in Table 6, which helps the user to navigate
around the modes.
Picture counter using 2 x 7 segment display
Note: A CIF camera with STV0680A-002 and 64Mbit SDRAM can store up to 320 images by using QCIF mode. Where >99
images are still available, the LCD display will remain at 99. Where (no. of images available) <99, the LCD display will show the
number of images available, as is the case with all other modes.
For suitable numeric LCD panel types, see Section 4.8.
2.2.4
An on-chip Pulse Width Modulator (PWM) on STV0680A is used to generate buzzer sounds to signal certain events. The
following are typical of the type of events which are indicated by the buzzer, and each has its own distinctive sound:
Piezo buzzer
1. Camera has been ‘Woken up’ from standby mode (either by the user pressing a button, by re-connecting the power source,
or by connecting a USB/RS232 connection).
The precise functionality of the
user interface
may vary from that of existing demonstration units. The
version shown here is close to the actual functionality available in STV0680A.
! Note
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| STV0705 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:General-Purpose Photodiode Array |
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