參數(shù)資料
型號: HD404629R
廠商: Hitachi,Ltd.
英文描述: AS Microcomputer Incorporating a DTMF Generator Circuit(微計算機帶雙音多頻發(fā)生器電路)
中文描述: 由于微機安裝有雙音多頻發(fā)電機斷路器(微計算機帶雙音多頻發(fā)生器電路)
文件頁數(shù): 104/155頁
文件大小: 549K
代理商: HD404629R
HD404629R Series
104
LCD Controller/Driver
The MCU has an LCD controller and driver which drive 4 common signal pins and 52 segment pins. The
controller consists of a RAM area in which display data is stored, a display control register (LCR: $01B),
and a duty-cycle/clock-control register (LMR: $01C) (figure 94).
Four duty cycles and the LCD clock are programmable, 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 even be used in watch mode, in which
the system clock stops.
Internal LCD power supply switch
52
2
2
4
4
3
LCD mode
register
(LMR)
2
V
CC
V
1
V
2
V
3
GND
COM1
COM2
COM3
COM4
SEG1
SEG4
SEG5
SEG8
SEG9
SEG20
SEG21
SEG52
C
C
C
C
Note: Pin function switching circuit
L
c
Common
signal
output
circuit
LCD control
register
(LCR)
LCD output
register 1
(LOR1)
LCD output
register 2
(LOR2)
LCD output
register 3
(LOR3)
Dual-port
display RAM
(52 digits)
Display
control
Display data
Duty
selection
Clock
I
Segment
signal
output
circuit
Selector
Data bus
Clock line
Signal line
Pin
control
Figure 94 Block Diagram of Liquid Crystal Display Control System
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404629RFS 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404629RH 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:AS Microcomputer Incorporating a DTMF Generator Circuit
HD404629RSERIES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
HD404629RTF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller
HD404629TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Microcontroller