STV-6411C-D01 STMICROELECTRONICS [STMicroelectronics], STV-6411C-D01 Datasheet - Page 34

• Manufacturer Part Number: STV-6411C-D01
• Description: DUAL-MODE DIGITAL CAMERA CO-PROCESSOR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Detailed Chipset Specifications
7.8
Note: 1 See
34/44
’Snapshot’/Continuous/
Self timer mode
(while un-tethered)
’Snapshot’/Continuous/
Self timer mode
(while tethered to PC)
While playing back audio
sounds through speaker
Standby mode
(when NOT connected to
USB)
PC Suspend mode
(when connected to USB):
Sensor SUSPEND pin
asserted
Standby mode
(when not connected to
USB): sensor powered off
using FET (see
PC Suspend mode
(when connected to USB):
sensor powered off using
FET (see
2 From limited evaluation, typical self-refresh current figures of certain SDRAM chips are well below
3 Option included in reference design to save current consumption, which can increase battery life
Typical current consumption of complete camera
The following data assumes that the camera has been built according to reference design referred
to in
The sensor operates at @ 3.3V DC
manufacturers’ maximum specification, e.g. 100-250 A .
and increase chances of meeting USB suspend mode compliance requirements.
Table 9
Chapter 10
Note 3
Mode
Table 14: Current consumption, complete STV0681+VV6411/6501 camera
Note 3
)
from
)
. Figures are approximate and depend on actual components sources - see notes.
Section 7.3
Approx. 270µA + SDRAM
self-refresh current
(see
suspend mode current
Approx. 300µA + SDRAM
self-refresh current
(see
suspend mode current
Approx. 270µA + SDRAM
self-refresh current
(see
Approx. 100µA + SDRAM
self-refresh current
(see
Note 2
Note 2
Note 2
Note 2
Typical
60mA
60mA
90mA
) + sensor
) + sensor
)
)
ADCS 7283313C
Assuming appropriate hardware included, power is sourced
from PC while USB connected.
Assuming 8
AN1310
Total current in this mode equals:
STV0681 standby current consumption (see
+ SDRAM self-refresh current (see
+ peripheral circuitry (approx. 50 A).
+ Sensor suspend mode current
Total current in this mode equals:
STV0681 Standby current consumption (see
+SDRAM self-refresh current (see
+ peripheral circuitry (approx. 50 A)
+ 200 A, based on 1.5k pull-up in camera and 15k pull-
down in PC.
+ Sensor suspend mode current
Total current in this mode equals:
STV0681 Standby current consumption (see
+SDRAM self-refresh current (see
+ peripheral circuitry (approx. 50 A).
Total current in this mode equals:
STV0681 Standby current consumption (see
+SDRAM self-refresh current (see
+ peripheral circuitry (approx. 50 A).
speaker as explained in application note
Comments
Note 2
Note 2
Note 2
Note 2
)
)
)
)
Note 1
Note 1
Note 1
Note 1
)
)
)
)
STV0681