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参数资料
| 型号： | AS1112C-BQFT |
| 厂商： | ams |
| 文件页数： | 14/20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 14. Greyscale Data Input Timing Diagram
Dot Correction Mode
Data Input Cycle
MODE
t H3
1st Greyscale Mode
Data Input Cycle After Dot Correction Input
t SU3
Following Greyscale Mode
Data Input Cycle
LD
t WH2
SDI
CLK
DC n-1
LSB
t H2
96
t SU2
GS n
MSB
t H0
1
t SU1
192
GS n
LSB
GS n+1
MSB
1
t PD0
GS n+1
LSB
192
SDO
DC n-1
MSB -1
DC n-1
MSB
x
x
x
SID n
MSB
SID n
MSB-1
SID n
MSB-2
SID n
LSB
SID n
MSB
Status Information Data (SID)
The AS1112 contains an integrated status information register, which can be accessed in greyscale mode (MODE = GND). Once the LD signal
latches the data into the greyscale register, the input shift register data is replaced with status information data (see Figure 15) .
Open, shorted LED, temperature warning and overtemperature flags as well as the dot-correction registers can be read out at pin SDO. The sta-
tus information data packet is 192 bits wide. Bits 191:176 and 31:16 contain the open LED detection status of each channel (either 191:176 or
31:16 can be used for readout). Bit 175 contains the thermal error flag status. Bit 174 contains the temperature warning flag. Bits 167:72 contain
the data of the dot-correction register. Bit 15:0 contains the LED shorted flags. The remaining bits are reserved. The complete status information
data packet is shown in Figure 15 .
Figure 15. Status Information Data Packet Format
MSB
LSB
191
176
175
174
168
167
72
71
16:31
0:15
LOD15
...
LOD0
TEF
TWF
...
X
DC15.
...
DC0.
X
...
LOD
LSD
Open LED
Detect Data
Overtemperature
Flag
DC Values
Bit #
0:15
16:31
32:71
72:167
Description
LED Short Detection, LSD
LED Open Detection (Optional, same as bits 176:191), LOD
Undefined
Dot Correction Readback (16 x 6 Bit)
Bit #
168:173
174
175
176:191
Description
Undefined
Temperature Warning Flag (TWF, 125oC, typ)
Temperature Error Flag (TEF, 150oC, typ)
LED Open Detection, LOD
Greyscale PWM Operation
The falling edge of the OEN signal initiates a greyscale PWM cycle. The first GSCLK pulse after the falling edge of OEN increments the
greyscale counter by one and switches on any OUT n whose greyscale value does not equal zero. Each subsequent rising edge of GSCLK incre-
ments the greyscale counter by one.
The AS1112 compares the greyscale value of each OUT n channel with the greyscale counter value. All OUT n whose greyscale values equal the
counter values are switched off. A OEN = 1 signal after 4096 GSCLK pulses resets the greyscale counter to zero and completes a greyscale
PWM cycle (see Figure 16) .
www.austriamicrosystems.com/LED-Driver-ICs/AS1112
Revision 1.13
13 - 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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