參數(shù)資料
型號(hào)： HD404618
廠(chǎng)商： Hitachi,Ltd.
英文描述： 4-Bit Single-Chip Microcomputer
中文描述： 4位單片機(jī)
文件頁(yè)數(shù)： 56/89頁(yè)
文件大?。?/td> 358K
代理商： HD404618
HD404618 Series
56
Liquid Crystal Display (LCD)
The MCU has an LCD controller and driver which drive 4 common signal pins and 32 segment signal pins.
The controller consists of a RAM area in which display data is stored, a display control register (LCR), and
a duty/clock control register (LMR), as shown in figure 37.
Four duties 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.
V
CC
Power switch
V
1
V
2
V
3
GND
LCD
power
control
circuit
LCD
common
driver
Display on/off
Display
area
LCD duty/clock
control
register
(LMR: $014)
(Dual-port
RAM)
LCD
control
register
(LCR: $013)
LCD
segment
driver
LCD
clock
$050
$06F
RAM area
Duty cycle selection
Clock selection
2
2
3
1
LCD
clock
SEG32
SEG2
SEG1
COM4
COM3
COM2
COM1
Divided system clock
output (CL1–CL3)
Divided 32-kHz clock
output (CL0)
LCD: Liquid crystal display
1
2
Figure 35 Liquid Crystal Display Block Diagram
LCD Data Area and Segment Data ($050– $06F):
Figure 36 shows the configuration of LCD RAM
area. Each bit of the storage area corresponds to one of four types of duties. If data is written to an area
corresponding to a certain duty cycle, it is automatically output to the corresponding segments as display
data.
相關(guān)PDF資料
PDF描述
HD404618FS 4-Bit Single-Chip Microcomputer
HD404618H 4-Bit Single-Chip Microcomputer
HD404618TF 4-Bit Single-Chip Microcomputer
HD4074618 4-Bit Single-Chip Microcomputer
HD4074618FS CONNECTOR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404618FS 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:4-Bit Single-Chip Microcomputer
HD404618H 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD404618SERIES 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:
HD404618TF 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:4-Bit Single-Chip Microcomputer
HD4046212FS 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:4-Bit Microcontroller
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