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NCP5680
ENTC: control the NTC input function
ENTC = 0 3 the external NTC is de ? activated and no
action is forwarded to the Power Flash current block.
ENTC = 1 3 the external NTC is biased by the internal
current and the Power flash current is switched OFF when
the NTC drops below the minimum level defined by the
NTCREG register
ICHG: control the superCAP charging current during a
start up sequence
ICHG = 0 3 the charging current is limited to 250 mA
maximum (125 mA typical)
ICHG = 1 3 the charging current is limited to 350 mA
maximum (250 mA typical)
ENPH: control the photo sense
ENPH = 0 3 the photo sense is de ? activated
ENPH = 1 3 the photo sense is activated
CONFIG1[7..0] Configuration register $02
CKPLS: this bit controls the LED1 & LED2 internal check
during a flash sequence
CKPLS = 0 3 no LED check performed during a flash
sequence
CKPRC = 1 3 the LED check are automatically
performed, during a flash sequence, the results can be read
from the STATUS register. If a fault is detected at any time
during a flash pulse, the flash sequence is immediately
stopped.
CKPRC: this bit controls the LED1 & LED2 internal
check out of a flash sequence.
CKPRC = 0 3 no LED check performed
CKPRC = 1 3 the LED check are automatically
performed (both LED1 and LED2), the results can be read
from the STATUS register.
BKL1: = LED2 control
BKL = 0 3 LED2 de ? activated
BKL = 1 3 LED2 activated
BKL0: = LED1 control
BKL = 0 3 LED1 de ? activated
BKL = 1 3 LED1 activated
B7
RESET
B6
CPFL
B5
SELFL
B4
I2CTRG
B3
EXTRG
B2
CPACT
B1
SACT
B0
ENIND
RESET
0
0
0
0
0
0
0
0
RESET:
B7 = 1 3 unconditionally clear all the registers to their
respective zero state.
CPFL:
B6 = 0 3 the charge pump is de ? activated when a power
flash sequence is on going
B6 = 1 3 the charge pump is fully active during a power
flash sequence.
SELFL:
B5 = 0 3 the Torch / Video mode is engaged, the flash
cannot be fired, the ILED current is limited to
100 mA/LED.
B5 = 1 3 the Flash mode is engaged, the flash can be fired.
I2CTRG:
B4 = 0 3 when an I2C flash sequence is on going, the
flash is immediately stopped by this I2C command.
B4 = 1 3 The flash is immediately launched by the I2C
when this bit is High, unless the EXTRG bit is high. In this
case, the external Trigger pulse has the highest priority.
EXTRG:
B3 = 0 3 The TRGFL pin is de ? activated, the flash can
be launched by the I2C port only
B3 = 1 3 The Photo Flash sequence is activated by the
positive going pulse applied to the TRGFL pin, the duration
of the Flash Pulse being identical to the TRGFL pulse
width. The Time out is activated. The two LED are
simultaneously powered, unless one of the two LED is not
activated, according to the CONFIG0 register setup.
CPACT:
B2 = 0 3 the charge pump is de ? activated
B2 = 1 3 the NCP5680 and the Charge Pump are active.
The Vout voltage is equal to the programmed value stored
into VOUTREG register. All the LED are biased as defined
in the previous or next programming sequence. A flash can
be launched.
SACT:
B1 = 0 3 the NCP5680 is active, but the pre ? charge is
de ? activated. If the CPACT is Low, the Vout voltage will
be low. If the CPACT bit is High, then the Vout voltage will
be equal to the programmed value.
B1 = 1 3 the NCP5680 is active, the pre ? charge is
activated. The Vout voltage is equal to the Vbat voltage,
unless the Charge pump is activated (CPACT = 1). All the
LED are biased as defined in the previous or next
programming sequence. A power limited flash can be
launched.
ENIND:
B0 = 0 3 the Indicator function is de ? activated
B0 = 1 3 the Indicator function is activated.
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