STV-DCA/VGA-E01 STMICROELECTRONICS [STMicroelectronics], STV-DCA/VGA-E01 Datasheet - Page 32

• Manufacturer Part Number: STV-DCA/VGA-E01
• Description: Low Cost Digital Camera (LCDC) Chipset
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Digital Camera Chipset; Customer Datasheet, Rev 3.0, March 2000
7.5.1
Notes:
STV0680F_contents.fm
1. See Table 11 on page 26.
2. From limited evaluation, typical self-refresh current figures of certain SDRAM chips are well below manufacturers’ maximum
3. This is assuming a low quiescent current 3v3 VReg is used, and assuming that the sensor is switched off using external cir-
specification, e.g. 100-250 A. See Section 9. for recommendations.
cuitry.
(when NOT connected to
’Snapshot’/Continuous/
’Snapshot’/Continuous/
Camera standby mode
Using VV6444 (sensor operates at @ 5V DC)
Self timer mode (while
Self timer mode (while
(when connected to
tethered to PC)
Suspend mode
un-tethered)
Mode
USB)
USB)
Table 21 : Current consumption, complete STV0680A+VV6444 camera
SDRAM self-refresh
SDRAM self-refresh
current (see note 2)
current (see note 2)
Typical Current
Approx. 0.4mA +
Approx. 0.6mA +
Cons.
80mA
80mA
Commercial in confidence
CDSTV0680F-C
PRELIMINARY
Total current in this mode equals:
STV0680/680A Standby current consumption (see note 1)
+ SDRAM self-refresh current (see note 2)
+ peripheral circuitry (approx. 50 A, see note 3).
Total current in this mode equals:
STV0680/680A Standby current consumption (see note 1)
+ SDRAM self-refresh current (see note 2)
+ peripheral circuitry (approx. 50 A, see note 3).
+ 200 A , based on 1.5k pull-up in camera (see Section
9.) and 15k pull-down in PC.
Assuming appropriate hardware included, power is
sourced from PC while USB connected.
Comments
STV0680A + VV6444/6410/6500
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