NCP5680
CONFIG1
Select the Charge Pump Mode of Operation:
0 3 charge pump de ? activated during a flash pulse
1 3 charge pump activated during a flash pulse
Select the Flash mode
Control a flash sequence from the I2C port:
0 3 the I2C trigger is de ? activated, clear previous sequence
1 3 the I2C trigger is activated and the flash pulse is forced on the positive
going pulse
Control the charge pump:
0 3 charge pump de ? activated
1 3 charge pump activated
Control the pre charge mode:
0 3 pre charge pump de ? activated
1 3 pre charge pump activated
B7
?
?
?
?
?
B6
1/0
?
?
?
?
B5
?
1
?
?
?
B4
?
?
1/0
?
?
B3
?
?
?
?
?
B2
?
?
?
1/0
?
B1
?
?
?
?
1/0
B0
?
?
?
?
?
Typical Sequence:
? send the I2C address $7C
? setup the Output Voltage $0F, $xx
? setup the LED1 current amplitude $03, $xx
? setup the LED1 pulse width $0A,$xx
? setup the LED1 delay $07, $xx
? send the I2C address $7C
? setup the LED2 current amplitude $04, $xx
? setup the LED2 pulse width $0B, $xx
? setup the LED2 delay $08, $xx
? send the I2C address $7C
? select the CONFIG1 register $02
? Activate the charge pump during a flash pulse & %0110
0110
Activate the charge pump &
Select the flash Mode &
Clear previous sequence
? send the I2C address $7C
? select the CONFIG1 register $02
Figure 14. Typical Flash Pulses Sequence
? Activate the charge pump during a flash pulse & %0111
0110
Activate the charge pump &
Select the flash Mode &
Send I2C Flash trigger
Figure 15. Typical Flash Pulses with 2A peak in LED2
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18
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