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JHB7015ABGPCAMUA Datasheet(PDF) 10 Page - Jewel Hill Electronic |
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JHB7015ABGPCAMUA Datasheet(HTML) 10 Page - Jewel Hill Electronic |
10 / 27 page JHB7015 VER: 01.01 - 9 - Issue date: 2013-08-01 JEWEL HILL ELECTRONIC CO.,LTD. 8. DRIVER IC FUNCTION DESCRIPTION. 8.1 DISPLAY MEMORY-RAM. The static display memory (RAM) is organized into 32 x 4 bits and stores the displayed data.The contents of the RAM are directly mapped to the contents of the LCD driver. Data in the RAM can be accessed by the READ, WRITE, and READ-MODIFY-WRITE commands. The following is a mapping from the RAM to the LCD pattern: 8.1.1 Time base and watch dog time (WDT). The time base generator and WDT share the same divided (/256)counter.TIMER DIS/EN/CLR, WDT DIS/EN/CLR, and IRQ EN/DIS are independent from each other. Once the WDT timeout occurs ,the IRQ pin will remain at logic low level until the CLR WDT or the IRQ DIS command is issued. If an external clock is selected as the source of system frequency, the SYS DIS command turns out invalid and the power down mode fails to be carried out until the external clock source is removed. |
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