參數(shù)資料
型號: HD404324
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-series microcomputer(4位單片微計算機)
中文描述: 4位HMCS400系列微電腦(4位單片微計算機)
文件頁數(shù): 59/94頁
文件大?。?/td> 573K
代理商: HD404324
HD404328 Series
59
LCD Controller/Driver
The MCU has an LCD controller and driver which drive four common signal pins and 24 segment pins.
The controller consists of a RAM area in which display data is stored, a display control register (LCR), and
a duty cycle/clock control register (LMR), as shown in figures 37 and 38.
Four duty cycles and the LCD clock are program-controllable, and a built-in dual-port RAM ensures that
display data can be automatically transmitted to the segment signal pins without program intervention. If a
32-kHz oscillation clock is selected as the LCD clock source, the LCD can be used even in watch mode, in
which the system clock stops.
/SEG16
3
Power switch
GND
Display on/off
Duty cycle selection
Clock selection
LCD clock
Divided system
clock output
Divided 32-kHz
clock output
SEG17
SEG24
V
1
V
CC
V
2
V
3
COM1
COM2
COM3
COM4
R2 /SEG1
R2 /SEG2
RAM area
$050
$067
1
2
LCD clock
2
2
3
1
4
LCD
power
control
circuit
LCD duty cycle/
clock control
register
(LMR: $014)
LCD output
register
(LOR: $015)
Display control
register
(LCR: $013)
LCD
segment
driver
Segment/
R2–R5
port
multiplexer
LCD
common
driver
(dual-port
RAM)
Display
area
R5
*
*
*
Note: HD404324U, HD404326U, HD404328U and HD4074329U require external LCD voltage division resistors.
LCD: Liquid crystal display
Figure 37 Block Diagram of LCD Controller/Driver
相關(guān)PDF資料
PDF描述
HD404326 4-bit HMCS400-series microcomputer(4位單片微計算機)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404324FS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity
HD404324H 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity
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HD404324U 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity
HD404324UFS 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:microcomputer designed to increase program productivity