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参数资料
| 型号： | AS1112C-BQFT |
| 厂商： | ams |
| 文件页数： | 13/20页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER LED 16CHAN 32-TQFN |
| 标准包装： | 1,000 |
| 恒定电流： | 是 |
| 拓扑： | PWM |
| 输出数： | 16 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，通用 |
| 类型 - 次要： | 颜色 |
| 频率： | 30MHz |
| 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： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN（5x5） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
AS1112
Datasheet - D e t a i l e d D e s c r i p t i o n
Figure 12. Dot Correction Data Input Timing Diagram
MODE
V CC
GND
Dot Correction Mode
Data Input Cycle n
Dot Correction Mode
Data Input Cycle n +1
SDI
DC n -1
LSB
DC n
MSB
DC n
MSB-1
DC n
MSB-2
DC n
LSB+1
DC n
LSB
DC n +1
MSB
DC n +1
MSB-1
t SU0
t WH0
CLK
1
2
1
95
96
1
2
t WL0
SDO
DC n -1
MSB
DC n -1
MSB-1
DC n -1
MSB-2
DC n -1
LSB+1
DC n -1
LSB
DC n
MSB
DC n
MSB-1
DC n
MSB-2
t WH2
t SU1
t H1
LD
Setting Greyscale Brightness
The brightness of each channel output can be adjusted using a 12 bits-per-channel PWM control scheme which results in 4096 brightness steps,
from 0% to 100% brightness. The brightness level for each output is calculated as:
%Brightness =
GS n
4095
x 100
(EQ 4)
Where:
GS n is the programmed greyscale value for OUT n (GS n = 0 to 4095);
n = 0 to 15 greyscale data for all outputs.
The device powers up with the following default seetings: GS = 4095 and DC = 63.
The input shift register shifts greyscale data into the greyscale register for all channels simultaneously. The complete greyscale data format con-
sists of 16 x 12 bit words, which forms a 192-bit wide data packet (see Figure 13) .
Note: The data packet must be clocked in with the MSB first.
Figure 13. Greyscale Data Packet Format
MSB
LSB
191
180
179
12
11
0
GS15.11
...
GS15.0
GS14.11
...
GS1.0
GS0.11
...
GS0.0
GS OUT15
GS OUT14:GS OUT1
GS OUT0
When pin MODE is tied to GND, the AS1112 enters greyscale data input mode. The device switches the input shift register to 192-bit width. After
all data is clocked in, the rising edge of the LD signal latches the data into the greyscale register (see Figure 14) .
All greyscale data in the input shift register is replaced with status information data (SID) after latching into the greyscale register.
www.austriamicrosystems.com/LED-Driver-ICs/AS1112
Revision 1.13
12 - 19
相关PDF资料 |
PDF描述 |
|---|---|
| AS1113-BSST | IC DRIVER LED 16-CHAN 24-SSOP |
| AS1117-BQFT | IC DRIVER 64LED MOBILE 24-TQFN |
| AS1118-BQFT | IC DRIVER 64LED W/DELAY 24-TQFN |
| AS1121B-BQFT | IC DRIVER 16-CH 32-TQFN |
| AS1122B-BQFT | IC LED DVR 12-CH 24-TQFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1112-EB | 制造商:ams 功能描述:AS1112 Evaluation Board |
| AS1112-XXX-I-A1-D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter |
| AS1112-XXX-I-A1-S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter |
| AS1112-XXX-I-A2-D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter |
| AS1112-XXX-I-A2-S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter |
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