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參數(shù)資料
| 型號： | HT1620(100QFP) |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數(shù)據(jù)表參考 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大小： | 144K |
| 代理商： | HT1620(100QFP) |
HT1625
Rev. 1.10
8
September 11, 2002
Functional Description
Display memory
RAM structure
The static display RAM is organized into 128 4 bits and
stores the display data. The contents of the RAM are di-
rectly 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 patterns.
Time base and Watchdog Timer
WDT
The time base generator and WDT share the same di-
vided (/256) counter. TIMER DIS/EN/CLR
, WDT DIS/EN/CLR and IRQ EN/DIS are independent
from each other. Once the WDT time-out 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 ex-
ternal clock source is removed.
Buzzer tone output
A simple tone generator is implemented in the HT1625.
The tone generator can output a pair of differential driv-
ingsignalsontheBZandBZwhichareusedtogenerate
a single tone.
Command format
The HT1625 can be configured by the software setting.
There are two mode commands to configure the
HT1625 resource and to transfer the LCD display data.
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RAM mapping
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Timer and WDT configurations
相關PDF資料 |
PDF描述 |
|---|---|
| HT1621(100QFP) | Controller Miscellaneous - Datasheet Reference |
| HT1621B(48PDIP) | LCD Display Driver |
| HT1621B(48SSOP) | LCD Display Driver |
| HT1621B-48SSOP | LCD DISPLAY DRIVER|32-SEG|4-BP|CMOS|SSOP|48PIN|PLASTIC |
| HT1621D | LCD Display Driver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HT1621 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:RAM Mapping 32x4 LCD Controller for I/O MCU |
| HT1621(100QFP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Controller Miscellaneous - Datasheet Reference |
| HT1621_05 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:RAM Mapping 32x4 LCD Controller for I/O MCU |
| HT1621_09 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:RAM Mapping 324 LCD Controller for I/O MCU |
| HT1621_10 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:RAM Mapping 324 LCD Controller for I/O MCU |
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