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參數(shù)資料
| 型號： | AS1108WL-T |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | LED驅動器 |
| 英文描述： | 4-digit, 5mA, serial Int.; Package Type: SOIC-20; Temperature Range: 0 - +70 °C |
| 中文描述： | LED DISPLAY DRIVER, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 1/19頁 |
| 文件大?。?/td> | 587K |
| 代理商： | AS1108WL-T |
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Datasheet
1 General Description
The AS1108 is a compact display driver for 7-segment
numeric displays of up to 4 digits. The device can be
programmed via SPI, QSPI, and Microwire as well as a
conventional 4-wire serial interface.
The device includes an integrated BCD code-B/HEX
decoder, multiplex scan circuitry, segment and display
drivers, and a 32-bit memory. Internal memory stores
the LED settings, eliminating the need for continuous
device reprogramming.
Every segment can be individually addressed and
updated separately. Only one external resistor (R
SET
) is
required to set the current through the LED display. LED
brightness can be controlled by analog or digital means.
The device can be programmed to use the internal
code-B/HEX decoder to display numeric digits or to
directly address each segment.
The AS1108 features an extremely low shutdown cur-
rent of typically 3μA, and an operational current of less
than 500μA. The number of digits can be programmed,
the device can be reset by software, and an external
clock is also supported. Additionally, segment blinking
can be synchronized across multiple drivers.
The AS1108 provides several test modes for easy appli-
cation debugging.
The device is available in a PDIP 20-pin and a SOIC 20-
pin package.
Figure 1. AS1108 - Typical Application Diagram
2 Key Features
10MHz SPI-, QSPI-, Microwire-Compatible
Serial I/O
Individual LED Segment Control
Segment Blinking Control (can be synchronized
across multiple drivers)
Hexadecimal- or BCD-Code/No-Decode
Digit Selection
3μA Low-Power Shutdown Current (typ;
data retained)
Extremely Low Operating Current 0.5mA in
Open-Loop
Digital and Analog Brightness Control
Display Blanked on Power-Up
Drive Common-Cathode LED Displays
Supply Voltage Range: +2.7 to +5.5V
Software Reset
Optional External Clock
Packages:
- PDIP 20-pin
- SOIC 20-pin
3 Applications
The AS1108 is ideal for bar-graph displays, instrument-
panel meters, LED matrix displays, dot matrix displays,
set-top boxes, white goods, professional audio equip-
ment, medical equipment, industrial controllers and
panel meters.
AS1108
4-Digit Microprocessor Display
DIG0 to
DIG3
SEG A to G
SEP DP
4 Digits
8 Segments
I/O
I/O
SCK
VDD
ISET
DIN
CLK
GND
GND
LOAD/CSN
+5V
9.53k
Ω
Micro-
processor
相關PDF資料 |
PDF描述 |
|---|---|
| AS1109-BQFT | 100mA, 8-Bit, Diagnostic; Package Type: QFN(4x4)-16 |
| AS1109-BSOT | 100mA, 8-Bit, Diagnostic |
| AS1109-BSST | 100mA, 8-Bit, Diagnostic; Package Type: SSOP-16 |
| AS1110-BQFT | 100mA, 16-CH, Diagnostics; Package Type: TQFN(5x5)-28 |
| AS1110-BSST | 100mA, 16-CH, Diagnostics; Package Type: SSOP-24 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AS1108WL-T-Z | 制造商:AMS 功能描述:0 |
| AS1108-XXX-I-A1-D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Filter |
| AS1108-XXX-I-A1-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Filter |
| AS1108-XXX-I-A2-D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Filter |
| AS1108-XXX-I-A2-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Filter |
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