參數(shù)資料
型號： HD66732
廠商： Hitachi,Ltd.
英文描述： Graphics Liquid Crystal Display Controller/Driver Supporting JIS Level-1 and Level-2 Kanji ROM(圖形LCD控制器/驅(qū)動(dòng)器)
中文描述： 圖形液晶顯示控制器/驅(qū)動(dòng)器支持日標(biāo)級- 1和第2級漢字光盤（圖形液晶顯示控制器/驅(qū)動(dòng)器）
文件頁數(shù)： 16/133頁
文件大?。?/td> 2608K
代理商： HD66732
HD66732
16
Key Scan Registers (SCAN0 to SCAN3)
The key matrix scanner senses and holds the key states at each rising edge of the key strobe signals that are
output by the HD66732. The key strobe signals are output as time-multiplexed signals from KST0 to
KST3. After passing through the key matrix, these strobe signals are used to sample the key status on eight
inputs from KIN0 to KIN7, enabling up to 32 keys to be scanned.
The states of inputs KIN0 to KIN7 are sampled by key strobe signal KST0 and latched into register
SCAN0. Similarly, the data sampled by strobe signals KST1 to KST3 is latched into registers SCAN1 to
SCAN3, respectively.
General Output Ports (PORT0 to PORT 2)
The HD66732 has three general output ports. These ports control drive current such as that for LEDs or
backlighting by using the current boosted by an external transistor.
Address Counter (AC)
The address counter (AC) assigns addresses to the DDRAM, CGRAM, or SEGRAM. When an address is
written into the RAM address register, the address information is sent to the AC. Selection of the DDRAM,
CGRAM, and SEGRAM is also determined concurrently by the RAM select bit (RM1/0).
After writing data into DDRAM, CGRAM, or SEGRAM, the AC is automatically incremented by 1 (or
decremented by 1). After reading the data, the AC is automatically updated or not updated by the RDM bit.
The cursor display position is determined by the address counter value.
Display Data RAM (DDRAM)
Display data RAM (DDRAM) stores display data represented in 8-bit character codes in the character
display mode. Its capacity is 80 x 8 bits, or 80 characters, which is equivalent to an area of 10 characters x
4 lines. Any number of display lines (LCD drive duty ratio) from 1 to 4 can be selected by software. Here,
assignment of DDRAM addresses is the same for all display modes. The line to be displayed at the top of
the display (display-start line) can also be selected by register settings. The graphics display mode does not
use data in the DDRAM.
Full-size Character Generator ROM (FCGROM)
Full-size character generator ROM (FCGROM) generates 11 x 12-dot character patterns from 13-bit
character codes. It is equipped with 8,128 full-size font patterns such as the JIS Level-1 and Level-2 Kanji
Set or non-Kanji Set. For the relationships between JIS codes and character codes to be set in the DDRAM,
see the Combined Display of Full-size and Half-size Characters section.
相關(guān)PDF資料
PDF描述
HD66740TB0 50/MDR/RECP/VERT PRS FIT/M2.6/SCW/30MIN
HD66740WTB0 112 x 80-dot Graphics LCD Controller/Driver
HD66751 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions
HD66750TB0 122 x 32 pixel format, Compact LCD size
HD66750 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66735 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HD66735 Procedure for setting Standby/Sleep/Display off mode. Technical Update/Device
HD66740 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HD66740TB0 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:112 x 80-dot Graphics LCD Controller/Driver
HD66740WTB0 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:112 x 80-dot Graphics LCD Controller/Driver
HD66741 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions
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