參數(shù)資料
型號(hào)： VV6410
廠商： 意法半導(dǎo)體
英文描述： XTAL MTL T/H HC49/US
中文描述： 雙模式數(shù)字相機(jī)芯片組
文件頁數(shù)： 34/63頁
文件大小： 563K
代理商： VV6410
Detailed chipset specifications
STV0680B + VV6444/6410/6500
34/63
Version 3.4
6.5.2
Using VV6410/6411/6500 (sensor operates at @ 3.3V DC)
Note: 1 See
Table 10
fin
Section 6.2
.
2 From limited evaluation, typical self-refresh current figures of certain SDRAM chips are well below
manufacturers’ maximum specification,
e.g. 100-250
μ
A
. See
Section 4
for recommendations.
3 Sensor suspend mode current <100
μ
A (needs SUSPEND pin asserted with VV6500), see
Table 15
and
Table 16
.
4 If the appropriate hardware to assert the sensor SUSPEND pin is not fitted, an additional current
consumption in Standby/PC Suspend mode of Approx. 50
μ
A can be expected with VV6500.
5 Option included in reference design to save current consumption, which can increase battery life
and increase chances of meeting USB suspend mode compliance requirements.
Mode
Typical
Comments
’Snapshot’/Continuous/
Self timer mode
(while un-tethered)
60mA
Assuming appropriate hardware included, power is sourced
from PC while USB connected.
’Snapshot’/Continuous/
Self timer mode
(while tethered to PC)
60mA
While playing back audio
sounds through speaker
90mA
Assuming 8
speaker as explained in application note
AN1310
Standby Mode (when NOT
connected to USB):
Sensor SUSPEND pin
asserted (see
Note 4
)
Approx. 220μA + SDRAM
self-refresh current
(see
Note 2
) + sensor
suspend mode current
(see
Note 3
)
Total current in this mode equals:
STV0680B Standby current consumption (see
Note 1
)
+ SDRAM self-refresh current (see
Note 2
)
+ peripheral circuitry (approx. 50
μ
A).
+ Sensor suspend mode current (See
Note 3
)
PC Suspend mode
(when connected to USB):
Sensor SUSPEND pin
asserted (see
Note 4
)
Approx. 50μA + SDRAM
self-refresh current
(see
Note 2
) + sensor
suspend mode current
(see
Note 3
)
Total current in this mode equals:
STV0680B Standby current consumption (see
Note 1
)
+SDRAM self-refresh current (see
Note 2
)
+ peripheral circuitry (approx. 50
μ
A).
+ 200
μ
A, based on 1.5k pull-up in camera (see
Chapter 6
)
and 15k pull-down in PC.
+ Sensor suspend mode current (See
Note 3
)
Standby Mode (when NOT
connected to USB): sensor
powered off using FET
(see
Note 5
)
Approx. 220μA + SDRAM
self-refresh current
(see
Note 2
)
Total current in this mode equals:
STV0680B Standby current consumption (see
Note 1
)
+ SDRAM self-refresh current (see
Note 2
)
+ peripheral circuitry (approx. 50
μ
A).
PC Suspend mode (when
connected to USB): sensor
powered off using FET
(see
Note 5
)
Approx. 100μA + SDRAM
self-refresh current
(see
Note 2
)
Total current in this mode equals:
STV0680B Standby current consumption (see
Note 1
)
+SDRAM self-refresh current (see
Note 2
)
+ peripheral circuitry (approx. 50
μ
A).
Table 18 : Current consumption, complete STV0680B+VV6410/6411/6500 camera
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