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| 型号： | AS1118-BQFT |
| 厂商： | ams |
| 文件页数： | 17/21页 |
| 文件大小： | 0K |
| 描述： | IC DRIVER 64LED W/DELAY 24-TQFN |
| 标准包装： | 1 |
| 系列： | * |
AS1118
Datasheet - Ty p i c a l A p p l i c a t i o n
8x8 Dot Matrix Mode
The application example in Figure 20 shows the AS1118 in the 8x8 LED dot matrix mode.
The LED columns have common cathodes and are connected to the DIG0:7 outputs. The rows are connected to the
segment drivers. Each of the 64 LEDs can be addressed separately. The columns are selected via the digits as listed
in Table 8 on page 9 .
The Decode Enable Register ( see page 10 ) must be set to ‘00000000’ as described in Table 10 on page 10 . Single
LEDs in a column can be addressed as described in Table 13 on page 11 , where bit D0 corresponds to segment G and
bit D7 corresponds to segment DP.
Note: For a multiple-digit dot matrix, multiple AS1118 devices can be cascaded easily.
Figure 20. Application Example as LED Dot Matrix Driver
V DD
2.7V to 5V
VDD
DIG0 to
9.53k ?
ISET
DIG7
SEG A to G
SEP DP
I/O
I/O
SDI
SCL
AS1118
Diode Arrangement
μP
I/O
LD
SDO
I/O
Diagnostic
readback: open
RESETN
GND
& shorted LEDs
Supply Bypassing and Wiring
In order to achieve optimal performance the AS1118 should be placed very close to the LED display to minimize effects
of electromagnetic interference and wiring inductance.
Furthermore, it is recommended to connect a 10μF electrolytic and a 0.1μF ceramic capacitor between pins V DD and
GND to avoid power supply ripple ( see Figure 15 on page 7 ).
www.austriamicrosystems.com/LED-Driver-ICs/AS1118
Revision 1.01
16 - 20
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PDF描述 |
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| AS1122B-BQFT | IC LED DVR 12-CH 24-TQFN |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1118-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 |
| AS1118-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 |
| AS1118-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 |
| AS1118-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 |
| AS1118-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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