参数资料
型号: AS1109-BSSU
厂商: ams
文件页数: 16/25页
文件大小: 0K
描述: IC LED 8-BIT CC DRIVER 16-SSOP
标准包装: 96
恒定电流:
拓扑: 8 位移位寄存器,PWM
输出数: 8
内部驱动器:
类型 - 主要: LED 照明显示器,标牌,汽车
频率: 50MHz
电源电压: 3 V ~ 5.5 V
输出电压: 15V
安装类型: 表面贴装
封装/外壳: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 管件
工作温度: -40°C ~ 85°C
产品目录页面: 804 (CN2011-ZH PDF)
AS1109
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 18. Switching into Low-Current Diagnostic Mode Timing Diagram
Global Flag Readout
2μs Low-Current Diagnosis Mode
OEN
Load Internal all 1s Test
Pattern
(optional)
t TESTING
LD
t SU(ERROR)
t H(L)
CLK
t GSW(ERROR)
t GSW(ERROR)
t GSW(ERROR)
t P4
t H(L)
SDI
SDO
t SW(ERROR)
T FLAG O FLAG S FLAG
t P1
Don’t
Care
Re-entering Error Detection
Mode
Normal Operation Current
For detailed timing information see Timing Diagrams on page 8 .
8.7 Shutdown Mode
The AS1109 features a shutdown mode which can be entered via 4 clock pulses during error-detection mode. To enable the shutdown mode a 0
must be placed at SDI after the rising edge of the 3rd clock pulse.
To disable shutdown mode a 1 must be placed at SDI after the 3rd clock pulse. The shutdown/wakeup information will be latched through if
multiple AS1109 devices are in a chain. At the rising edge of the 4th clock pulse the shutdown bit will be read out and the AS1109 will shutdown
or wakeup.
Note: In shutdown mode the supply current drops down to typically 3μA.
Figure 19. Shutdown Mode Timing Diagram
OEN
LD
t SU(ERROR)
CLK
1 = Wakeup
SDI
0 = Shutdown
SDO
T FLAG
O FLAG
S FLAG
1 = Wakeup
0 = Shutdown
t P4
t SU(D)
Revision 1.21
15 - 24
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