参数资料
型号: AS3647-ZWLT-500
厂商: ams
文件页数: 27/38页
文件大小: 0K
描述: IC WHITE LED FLASH DVR 13WLCSP
标准包装: 1
恒定电压:
拓扑: PWM,升压(升压)
输出数: 2
内部驱动器:
类型 - 主要: 闪灯/白光
频率: 4MHz
电源电压: 2.7 V ~ 4.4 V
输出电压: 2.8 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 13-UFBGA,WLCSP
供应商设备封装: 13-WLCSP(2.25x1.5)
包装: 标准包装
工作温度: -30°C ~ 85°C
其它名称: AS3647-ZWLT-500DKR
AS3647/47B
Datasheet, Confidential - D e t a i l e d D e s c r i p t i o n
Table 11. Flash Timer Register
Addr: 5
Flash Timer Register
This register identifies the flash timer and timeout settings
Bit
Bit Name
Default Access
Description
Define the duration of the flash timer and timeout timer
0h
1h
2h
...
23h
2ms
4ms
6ms
...
72ms - default
7:0
flash_timeout
23h
R/W
...
7F
...
256ms
80
81
82
...
FEh
FFh
264ms(now 8 ms LSB steps from here on)
272ms
280ms
...
1272ms
1280ms
1
1. Internal calculation for codes above 80h: flash timeout [ms] = ( flash_timeout -127) * 8 + 256 [ms]
Table 12. Control Register
Addr: 6
Control Register
This register identifies the operating mode and includes an all on/off bit
Bit
Bit Name
Default Access
Description
Define the AS3647/47B operating mode
00
shutdown or external torch mode if
ext_torch_on (page 24) =10
1:0
mode_setting
00
R/W
01
indicator mode (or low current mode using PWM)
LED current is defined by the 6LSB bits of led_current
pwm modulated with 31.25kHz defined by register
inct_pwm (1/16...4/16)
assist light mode:
LED current is defined by the 7LSB bits of
10
11
1
led_current
flash mode:
LED current is defined by led_current
( out_on and mode_setting are automatically cleared
after a flash pulse)
2
reserved
X
R
reserved - don’t use, always write 0
Enables the output current sinks (pin LED_OUT1/2)
3
out_on
0
R/W
0
1
outputs disabled
outputs enabled
( out_on and mode_setting are automatically cleared
after a flash pulse)
www.austriamicrosystems.com/AS3647
1.5-4
26 - 37
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