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參數資料
| 型號： | MB90M407PF |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 20 MM, 3.35 MM HEIGHT, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數： | 38/68頁 |
| 文件大?。?/td> | 1486K |
| 代理商： | MB90M407PF |
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MB90M405 Series
DS07-13718-3E
43
LED automated display function
Pins between LED0 pin and LED16 pin not set to digits can be set as LED pins.
As shown in the figure below, LED0 pin becomes common output, and LED1 pin to LED16 pin become LED
segment output.
When LED0 pin is set to “H”, the values corresponding to LED1 pin to LED16 pin are output at the timing T1
in display data RAM; when LED0 pin is set to “L”, the values corresponding to LED1 pin to LED16 pin are
output at the timing T2 in display data RAM.
1/2 duty LED output can be obtained by externally inverting the LED0 pin common output.
As shown below, the output timing of LED1 pin to LED16 pin from LED0 pin and the inverted signal of LED0
pin is 5.12 ms for LED0 pin, and 4.096 ms for LED1 pin to LED16 pin (when machine clock (peripheral operation
clock) frequency is 16 MHz) .
LED automated display timing
T1
T2
T1
T2
5.12 ms
4.096 ms
5.12 ms
1.024 ms
LED0 pin common output
Inverting output created
outside device
LED segment output from
LED1 pin to LED16 pin
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