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参数资料
型号： AS1105WL-T
厂商： AUSTRIAMICROSYSTEMS AG
元件分类： LED驱动器
英文描述： 4-digit, 10mA, serial Int.; Package Type: SOIC-20; Temperature Range: 0 - +70 °C
中文描述： LED DISPLAY DRIVER, PDSO20
封装： SOIC-20
文件页数： 6/15页
文件大小： 176K
代理商： AS1105WL-T
6 - 15
AS1105
Datasheet - Detailed Description
8 Detailed Description
8.1 Serial-Addressing Modes
The programmng of the AS1105 is done via the 4-wire serial interface. A programmng sequence consists of 16-bit packages. The data is shifted
into the internal 16-Bit register with the rising edge of the CLK signal. With the rising edge of the LOAD signal, the data is latched into a digital or
control register depending on the address. The LOAD signal must go to high after the 16th rising clock edge. The LOAD signal can also come
later but just before the next rising edge of CLK, otherwise data would be lost. The content of the internal shift register is applied 16.5 clock
cycles later to the DOUT pin. The data is clocked out at the falling edge of CLK. The Bits of the 16Bit-programmng package are described in
Table 4
. The first 4 Bits D15-D12 are ”dont care, D11-D8 contain the address and D7-D0 contain the data. The first bit is D15, the most
significant bit (MSB). The exact timng is given in
Figure 5
.
Figure 5. Timng Diagram
8.2 Digit and Control Registers
The AS1105 incorporates 12 registers, which are listed in
Table 5
. The digit and control registers are selected via the 4Bit address word. The 4
digit registers are realized with a 32bit memory. Each digit can be controlled directly without rewriting the whole contents. The control registers
consist of decode mode, display intensity, number of scanned digits, shutdown, display test and reset/external clock register.
8.3 Shutdown Mode
The AS1105 features a shutdown mode, where it consumes only 20μA current. The shutdown mode is entered via a write to register 0Ch. Then
all segment current sources are pulled to ground and all digit drivers are connected to V
DD
, so that nothing is displayed. All internal digit
registers keep the programmed values. The shutdown mode can either be used for power saving or for generating a flashing display by
repeatedly entering and leaving the shutdown mode. The AS1105 needs typically 250μs to exit the shutdown mode. During shutdown, the
AS1105 is fully programmable. Only the display test function overrides the shutdown mode.
Table 4. Serial Data Format (16 Bits)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
Address
MSB Data LSB
D0
D1
D15
D14
DOUT
DIN
CLK
LOAD
t
CSW
t
CL
t
C
t
C
t
C
t
LDCK
t
DO
t
D
t
D
相关PDF资料
PDF描述
AS1106PE 8-digit, 5mA, serial Int.; Package Type: PDIP-24; Temperature Range: -40 - +85 °C
AS1106PL 8-digit, 5mA, serial Int.; Package Type: PDIP-24; Temperature Range: 0 - +70 °C
AS1106WE-T 8-digit, 5mA, serial Int.; Package Type: SOIC-24; Temperature Range: -40 - +85 °C
AS1106WL-T 8-digit, 5mA, serial Int.; Package Type: SOIC-24; Temperature Range: 0 - +70 °C
AS1108PL 4-digit, 5mA, serial Int.; Package Type: PDIP-20; Temperature Range: 0 - +70 °C
相关代理商/技术参数
参数描述
AS1105-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
AS1105-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
AS1105-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
AS1105-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
AS1105-XXX-I-A3-D 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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