AS3682 Datasheet, PDF (14/43 Pages) ams AG – 480mA Camera Lighting Management Unit

AS3682
Data Sheet
austriamicrosystems
Charge Pump
10 Hard Flash Modes
The Hard Flash Modes allow for simple and efficient control of the AS3682 using dedicated Enable Pins. While the
Hard Flash Mode can be selected by defined pin connections (see Table 10 Hard Flash Mode Setting by Pin Configu-
ration) the distinction between Hard Flash Mode 1 and Hard Flash Mode 2 is set by the factory (refer to Ordering Infor-
mation on page 42 for more information).
An integrated temperature sensor provides over-temperature protection for the AS3682. If the device temperature
exceeds the value of T140 (page 8), the current sources will be switched off. The device will resume operation when the
temperature drops below T140 - THYST (page 8).
! _{Hard Flash Mode 1 (page 15) Allows for individual control of Strobe and Preview Signals or in other words Flash}
and Torch engaging all 6 current sinks.
! _{Hard Flash Mode 2 (page 17) Addresses the Flash LEDs and General Purpose LEDs independently of each other}
providing the possibility to realize Flash and Backlight Functions in parallel.
Note: In both Hard Flash Modes pins STROBE/F2, SFL/F1, T1/F0, CLK/P2, DATA/P1, and GPIO0/P0 are Active-Low
(with internal pull-up resistors).
Hard Flash Modes 1 and 2 are factory preset. See Ordering Information on page 42.
Table 10. Hard Flash Mode Setting by Pin Configuration
Pin HFL
Pin SFL/F1
Mode
GND
GND
Normal Mode
GND
VDD_GPIO
Soft Flash Mode
VBAT
Don't Care
Hard Flash Mode
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