參數(shù)資料
型號(hào)： ML9040A-AXXWA
廠商： OKI ELECTRIC INDUSTRY CO LTD
元件分類： 顯示控制器
英文描述： 16 X 40 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC81
封裝： ALUMINUM PAD, DIE-81
文件頁(yè)數(shù)： 5/49頁(yè)
文件大?。?/td> 515K
代理商： ML9040A-AXXWA
ML9040A-Axx/-Bxx
Semiconductor
13/49
PEDL9040A-03
FUNCTIONAL DESCRIPTION
Instruction Register (IR) and Data Register (DR)
These two registers are selected by the REGISTER SELECTION (RS) pin.
The DR is selected when the "H" level is input to the RS pin and IR is selected when the "L"
level is input.
The IR is used to store the address of the display data RAM (DD RAM) or character
generator RAM (CG RAM) and instruction code.
The IR can be written, but not be read by the microcomputer (CPU).
The DR is used to write and read the data to and from the DD RAM or CG RAM.
The data written to DR by the CPU is automatically written to the DD RAM or CG RAM
as an internal operation.
When an address code is written to IR, the data (of the specified address) is automatically
transferred from the DD RAM or CG RAM to the DR. Next, when the CPU reads the DR,
it is possible to verify DD RAM or CG RAM data from the DR data.
After the writing of DR by the CPU, the next adress in the DD RAM or CG RAM is selected
to be ready for the next CPU writing.
Likewise, after the reading out of DR by the CPU, DD RAM or CG RAM data is read out
by the DR to be ready for the next CPU reading.
Write/read to and from both registers is carried out by the READ/WRITE (R/W) pin.
Table 1 RS and R/W pins functions
Busy Flag (BF)
When the busy flag is at "H", it indicates that the ML9040A-Axx/-Bxx is engaged in internal
operation.
When the busy flag is at "H", any new instruction is ignored.
When R/W = "H" and RS = "L", the busy flag is output from DB7.
New instruction should be input when busy flag is "L" level.
When the busy flag is at "H", the output code of the address counter (ADC) is undefined.
Address Counter (ADC)
The address counter (ADC) allocates the address for the DD RAM and CG RAM write/
read and also for the cursor display.
When the instruction code for a DD RAM address or CG RAM address setting is input to
IR, after deciding whether it is DD RAM or CG RAM, the address code is transferred from
IR to ADC. After writing (reading) the display data to (from) the DD RAM or CG RAM,
the ADC is incremented (decremented) by 1 internally.
The data of the ADC is output to DB0 - DB6 on the conditions that R/W = "H", RS = "L", and
BF = "L".
L
RS
Function
R/W
L
IR write
H
L
Read of busy flag (BF) and address counter (ADC)
L
H
DR write
H
DR read
相關(guān)PDF資料
PDF描述
ML9040A-BXXGA 16 X 40 DOTS DOT MAT LCD DRVR AND DSPL CTLR, PQFP80
ML9040A-AXXWA 16 X 40 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC81
ML9040A-BXXWA 16 X 40 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC81
ML9041A-01ACVWA 17 X 100 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC189
ML9041A-01ACVWA 17 X 100 DOTS DOT MAT LCD DRVR AND DSPL CTLR, UUC189
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ML9040A-B01GAZ03A-7 功能描述:LCD 驅(qū)動(dòng)器 LCD DOT Matrix Controller, 16/40 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
ML9040A-BXX 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9040A-BXXGA 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9040A-BXXWA 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9040-AXX 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
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