参数资料
型号: AS1119-BWLT
厂商: ams
文件页数: 26/31页
文件大小: 0K
描述: IC LED 144CH DRIVER 36WLCSP
标准包装: 1
显示器类型: LED
配置: 点阵
接口: I²C
电流 - 电源: 4mA
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 36-UFBGA,WLCSP
供应商设备封装: 36-WLCSP
包装: 标准包装
其它名称: AS1119-BWLTDKR
AS1119
Datasheet - R e g i s t e r D e s c r i p t i o n
Current Source Block A, B, C Registers (0x05, 0x06, 0x07)
Within this registers the current for every single LED in one block can be set from 0mA to 31mA in 255 steps (8 bits). Per default this register is
set to 0x00.
Table 21. Current Sourcer Register Format
Current Source Registers
Bit
Bit Name
Default
Access
Bit Description
Address 0x05
7:0
Analog Current
Matrix A
0000000
R/W
00000000: 0mA
..........
11111111: 31mA
Address 0x06
7:0
Analog Current
Matrix B
0000000
R/W
00000000: 0mA
..........
11111111: 31mA
Address 0x07
7:0
Analog Current
Matrix C
0000000
R/W
00000000: 0mA
..........
11111111: 31mA
Charge Pump Config Register (0x08)
In this register the characteristics of the Charge Pump can be set. By the use of the charge pump (bit 0) the supply voltage for the LEDs can be
boosted to 1.5- or 2-times of the device supply (V DD ), if required. Additionally bit1 offers the option to check periodically if the LED supply can be
reduced again during operation. This period is defined by bit 4:2.
Alternatively, the LED supply can be (re)set to V DD by disabling the charge pump for a short time. In this case the period can be defined by user
(application). Per default this register is set to 0x1E.
Table 22. AS1119 Config Register Format
0x08 Charge Pump Config Register
Bit
7:5
4:2
Bit Name
-
Timeframe for reduce
supply test
Default
000
111
Access
n/a
R/W
000: 0.3s
001: 0.5s
Bit Description
010: 0.8s
011: 1.0s
100: 1.3s
101: 1.6s
110: 1.8s
111: 2.1s
1
Reduce supply option
1
R/W
0: reduce supply option off
1: reduce supply option on
0
Charge Pump
0
R/W
0: Charge Pump disable
1: Charge Pump enable
Revision 1.04
25 - 30
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