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參數(shù)資料
| 型號： | AS1100WL-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | 8-digit, 5mA, serial int. |
| 中文描述： | LED DISPLAY DRIVER, PDSO24 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大小： | 763K |
| 代理商： | AS1100WL-T |
6 - 17
AS1100
Datasheet - Detailed Description
8 Detailed Description
8.1 Serial-Addressing Modes
Programmng of the AS1100 is done via 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 5
. 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 AS1100 incorporates 15 registers, which are listed in
Table 5
. The digit and control registers are selected via the 4Bit address word. The 8
digit registers are realized with a 64bit 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 AS1100 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 AS1100 needs typically 250μs to exit the shutdown mode. During shutdown the
AS1100 is fully programmable. Only the display test function overrides the shutdown mode.
8.4 Initial Power-Up
After powering up the systemall register are reset, so that the display is blank. The AS1100 starts the shutdown mode. All registers should be
programmed for normal operation. The default settings enable only scan of one digit, the internal decoder is disabled, data register and intensity
register are set to the mnimumvalue.
Table 4. Serial Data Format (16bits)
D15
X
D14
X
D13
X
D12
X
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Address
MSB Data LSB
D0
D1
D15
D14
DOUT
DIN
CLK
LOAD
t
CSW
t
CL
t
CH
t
CP
t
CS
t
LDCK
t
DO
t
DS
t
DH
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1101-T | Dual, 80mA, Simple Drive, w.En; Package Type: SC70-6; Miscellaneous: 2 LEDs |
| AS1102-T | Triple 40mA Simple Drive w. En; Package Type: SC70-6; Miscellaneous: 3 LEDs |
| AS1103-T | Quad, 40mA, Simple Drive; Package Type: SC70-6; Miscellaneous: 4 LEDs without Enable |
| AS1105WL-T | 4-digit, 10mA, serial Int.; Package Type: SOIC-20; Temperature Range: 0 - +70 °C |
| AS1106PE | 8-digit, 5mA, serial Int.; Package Type: PDIP-24; Temperature Range: -40 - +85 °C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1100WL-TZ | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Serially Interfaced, 8-Digit LED Driver |
| AS1100WL-Z | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Serially Interfaced, 8-Digit LED Driver |
| AS1101 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Low-Dropout LED Drivers |
| AS1101_1 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Low-Dropout LED Drivers |
| AS11010 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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